Stafford Vehicle Components provide LED flashers that can be discretely mounted inside the rear window too.  SVC Part number 6416.  Murray Grainger

Stafford Vehicle Components now manufacture a kit to convert your white flashing torpedo side light to an amber one. It has two bulbs in place of the usual double filament single bulb. the flasher bulb being amber in colour.

I have always felt the white flashing side lights to be inadequate so when I saw this I thought it was a really good idea. I have just finished fitting mine and they work fine, a slight increase in the flash rate has resulted.

• The flash rate is a little faster but well within limits

• The side light is not quite so bright

• In the dark you can see a slight fade to white at the top but it is predominately amber

• The front screw needs extra washers when fitting to avoid it touching the bulb.

• I had to replace the fitted bayonets as they were not compatible with mine

Peter Vielvoye

Chassis number - where to find it

Every Y chassis number was manually stamped into the front left chassis leg, just forward of the hole for the steering rack.  Over the years this will have been covered over with shellac, under-seal, grease and  road dirt.  With careful use of a heat gun, a broad knife, and a wire brush, this can be scrapped off to reveal the chassis number of your car.  So, if you have lost your plate on the battery box, or suspect that your Y may be a hybrid of two cars, here is where to look for the number.

Oil Pressure, generating it after an engine rebuild

After rebuilding the engine, the oil pump will need priming; it was a perennial problem with these 'Morris' pumps: they are high above the oil level. Depending upon the pump and year of the engine, you might have a priming plug fitted (see manual) where you can fill up the pump. Once full, wind away on the starting handle with the plugs out until you get oil coming up out of the rocker feed pipe, (disconnect this at the oil pressure gauge connection.) Once you get oil, reconnect and start the engine.

If you are unlucky and have no priming plug, you will have to 'fill' the pump by another means, possibly by using the oil feed to the filter pipe. I always fill these pumps with Vaseline on assembly, and DO NOT TURN IT until the engine is ready to turn on the handle. The pumps gears soon shift the Vaseline, and pull up the oil from the sump. Again, I use the oil pressure gauge connection to check the oil is getting into the engine.

Today, pumps 'self-prime', but not so in the 1930s-40s.  You will still need a few goes at it until the oil flows. Use the starting handle, do not run it until you know the oil is in the crankshaft gallery, (where the oil pressure gauge connection is.) Put plenty of oil in, as you now probably have an air-lock in the pipe to the oil strainer in the sump. You can try 'sucking' the oil up with a tube over the hole, but you need very good lungs for that!  Neil Cairns

Fuel sender and gauge testing

The following is based on, and contains ex­cerpts from, a tech article written by Mike Ash and Dave Smith for the MGA Register. These tests and procedures are the same for most cars that use the “FT” style Smiths sending units with an internal winding and die cast aluminium base.

To perform these tests, you may need to drain the fuel tank before removing the sending unit from the tank. Remember that gasoline is a highly flammable liquid, and that the vapor in a gas tank is a highly explosive gas. Be very careful to keep open flames away, and not to do anything that could create a spark near the tank.

The gas gauge system can be baffling to diagnose and repair – especially considering that a poor ground (at the tank unit or at the gauge,) a frayed wire, or “gremlins” could be the cause. This test procedure has been developed by using information contained in the Jaguar Factory Manual and information provided by Nisonger Company. The test requires a volt/ohm multimeter.

Testing the Fuel Tank Sending Unit

To test the sending unit with your multimeter on Ω x10, the unit should show approximately 1 ohm with the arm down (fuel tank empty) and approximately 9 ohms with the arm up (fuel tank full). If there is too much less than 1 ohm, there is risk of damaging the fuel gauge coils. Zero ohms, which indicates a direct short, for even a few sec­onds, could burn out the coils.

Testing the Dash Mounted Fuel Gauge

To test the gauge, remove the gauge from the dashboard, taking care to mark the wires for reat­tachment. (The terminals on the back of the gauge are marked “T” for connection to the Tank unit, and “B” for connection to the Battery via the ig­nition switch.) Test the wire that goes from the gauge to the tank sending unit with a multimeter meter (on the Ω x10 range). There should be virtually no resistance (zero Ohms). The wire must be unattached at both ends for this test. If the wire is open, or has more than 2-3 ohm resistance, re­place as needed. The Gauge is designed to oper­ate with an upper coil and a lower coil. It is the balance between these coils that moves the fuel indicator needle. The coils must be tested sepa­rately. Do not test for more than one second.

Test the top coil by giving 12 volts for a split second to the B-terminal while the gauge body is grounded. The “T” terminal should be left open. If the needle swings to FULL, the top coil is working correctly.

Test the bottom coil by giving a short burst of 12 volts to the B-terminal while both the gauge body and “T” terminal are grounded. If your gauge is working properly, the bottom coil will overcome the top coil and the needle will swing to EMPTY. To reiterate: Do not run either test for more than one second.

Identify your problem before buying a replacement tank sending unit or fuel gauge – or for that matter, any replacement part. You could spend a lot of money, wind up burning out the new replacements, and even make the situation worse. Think of it as replacing a fuse. If you do not figure out why the fuse blew in the first place and fix the problem, and instead simply keep re­placing fuses, all you will do is waste time and money as each replacement fuse blows as well.

To get this hint as a PDF file - click here.

Engine Reassembly Torque settings and Checklist

Taking an engine apart is easy - putting it back together correctly and ensuring that you have checked everything is harder. Click here for a quick check list of torque settings and checks to be carried out on rebuilding an XPAG engine.  Dave DuBois

Dash pots - which way round?

When you remove a carburettor dash pot, it is important to remember which way round it came off, and for those with twin carburettors, whether it was a front or rear one.  Incorrect fitting may lead to the piston binding in the chamber.  I made a small stand so that it is easy to remember which way to refit them. Tony Slattery

Steering rack gaiters

When fitting new gaiters to your Steering Rack secure the ends with Cable Ties. It’s much quicker, doesn’t require you to skin your knuckles and if you ever need to change them they can be removed more easily than the normal rusted clamps. David Pelham

Carburettor float chamber - float fork drop

One of the causes of float bowl overflow, especially if the car has set for a long enough period that all of the gas has evaporated out of the float bowl, is, what is called excess float drop in today’s lexicon.  What this means is that the float or, in case of the H2 carburettors found in our cars, the float lever drops so far down that it traps the needle from the needle valve against the straight section of the fork and jams everything together so that the fork cannot raise to push the needle against it’s seat to shut off gas flow (Note:  This only happens when needle valves are used to shut off gas flow, regardless of make of the valve.  It will not happen when Gross Jets are used in place of a needle valve).  The permanent fix for this situation is to cut slots on either side of the straight section of the fork, next to the mounting holes.  These slots (some forks come with the slots already cut) form a tab that can be bent down to limit the amount the fork will drop to the point where the needle valve will open but the needle will not become jammed and cause the float bowl to overflow (please ignore the Gross Jet that is installed in place of the standard needle valve, this is the only float bowl lid that I had to photograph). Dave DuBois

Heater - increasing its efficiency

Having recently fitted a Smiths Heater, I have today had my first YT run with a very efficient  heater blasting me with hot air. This is I am sure is mainly due to Neil Cairn's tip in 'Y' Sheet 4 XPAG Engines on replacing the thermostat and blanking off the bypass hose. The heater warms up really quickly and gives out an excellent flow of hot air even in this cold weather. Peter Vielvoye and Neil Cairns

Carpet Strips - YT

If you have a YT and a set of YA/YB carpet strips you can shorten the rear on by 5 inches and hey presto you have a set of YT ones.  (East Grinstead Small Works Team - making parts for MG Y Types)

Boot hinges -checking the handing

When refitting the boot hinges on an MG Y Type, care needs to be exercised as these are handed.  That is to say the left hand hinge will only go on the left hand side of the car and the right hand one on the right hand side.  The best way to identify which hinge fits which side is to temporarily hold the bottom hinge, or fit it, to the car body - not to the boot lid.   By doing this and positioning the hinge in the open position, it should then be more apparent if you've got it correct.  If you have the correct hinge on the correct side, the fit will be snug, if not there will be an unsightly gap at one side of the hinge where it does not touch the bodywork.  Do not over tighten the studs when fitting either as they are brittle and snap easily.  (Jack Murray)

Distributor Rebuilding

A couple of years ago, I rebuilt a worn-out distributor for my Y Type using parts supplied mail order by Peter Roe, Northwest Classic Spares.  He has the old Lucas data sheets and was able to supply all the correct parts including baseplate, cam, bob weights, springs, condenser, rotor arm, cap and the 407050 points.  He's very helpful, and provides quick service at keen prices.  His website is www.northwestclassic.co.uk and via email here.).  Usual disclaimer - I've no connection with Peter or his business, other than as a satisfied customer.   (Bill Bennet)

Brake cylinders - YB Front

When replacing YB front brake wheel cylinders either with new or overhauled one's it is possible to mount the cylinders incorrectly. That is upside down/wrong way around and it still look right. There is no help in the Overhaul Manual indeed it says they are interchangeable. However if you did as I did and on one side mount them wrongly then the result is the car pulling to one side which is why you did the job in the first place.

The Cylinders should have their horizontal centrelines in line with the centreline of the stub axle.( one with it's shoe up and one down of course ). If they are wrong one cylinder will be above and one below the stub axle centreline. All still goes together but a graceful curved braking is obtained!

I always lay parts down as they came off before proceeding but his time they were disturbed. Only when both hubs were taken off and comparisons made did the problem reveal itself.   (Ted Gardner)

Oil Viscosity

When reading the Bulletin Board threads I've noticed there is some difficulty relating the SAE (Society of Automotive Engineers) oil viscosity requirements for our old cars to oils which are currently available outside the U.S.A. Perhaps it would be easier if the relationship between SAE and ISO (International Standards Organization) classifications were known.  This chart show that relationship, plus the AGMA (American Gear Manufacturer's Association) grades for gear oils. 

Example: SAE 140 gear oil is required for a differential unit. Cross to ISO 460.  If a SAE 90 is required, use ISO 220 oil.  If a 90W-140 is called for,  ISO 320 might be correct for the application.  Note how SAE Crankcase oil classifications are in a different band than the SAE gear oils. An SAE 10W-30 would be an ISO 32-100.  W in SAE nomenclature stands for 'Winter'.   (Scott Barrow)

Filling up

The MG Y Fuel tank is an almost regularly shaped cubic rectangular design with straight walls.  This makes reading the fuel gauge easy and eliminates guess-work.  To avoid fuel blowing back (or 'the burp') when filling up the following guide may be helpful.  (Paul Barrow)

Bleeding Brakes

The brake nipples are 11/32" A/F, or put more readily, a 1/4 inch Whitworth. You will also need a tube needs of 1/4 inch inside diameter. The easiest way is to is to get a "one man bleed kit" with a one-way valve in the tube and fix air tight connectors to the 1/4 inch tube.  If this does not appeal, then get an assistant to push the brake pedal for you.  Also have a spare tin or two of clean new brake fluid ready to top up the reservoir: it empties very quickly and you will get air into the system if you are not careful.  DO NOT MIX SILICON WITH HYDRO BRAKE FLUID - IF IN DOUBT GET A GARAGE TO DO THIS FOR YOU - YOUR BRAKES ARE YOUR LIFE!

Once set up with the tube over the nipple, the assistant (on command from you) should push on the pedal, then you gently slacken off the nipple, (loosen it first then just 'nip' it up ready).  The oil will squirt out into the tube, so have another container to catch the outflow.   Their foot will go to the floor. THE ASSISTANT MUST NOT RAISE THEIR FOOT until you have nipped up the nipple. Once you have 'closed' the nipple they can raise their foot. Keep repeating this until you get clean fluid coming out of the tube. Use clear plastic as you can see it ejecting from the nipple.

The first drum will take ages, but once you have clean fluid into the system the others will quickly get clean fluid. Always do the NEAREST to the master cylinder first, i.e. the drivers side front (RHD), then the n/s front, then o/s rear, then n/s rear. Top up the reservoir to about 1/4" from the top, leaving a small air space in there for expansion in hot weather.

Try to avoid getting fluid on any paintwork. Keep water handy to wash it off if you do, it will dissolve in water. Use lots of water. Do not get any water in the system.  (Neil Cairns)

Fitting Sills

If this is done without lifting the body from the chassis, the chassis can be used as a 'jig' to support the body. Only one side can be done at a time, or all reference points are lost: it really depends on how much of the sill has rotted away. If it is only the bottoms and forward end, this can be 'patched' using sheet steel. If done properly and let into the sill, it can be almost undetectable. Obviously both side (front and rear) wings and the running boards need removing. Alas this is where MORE rot will be found, especially at the rear end.  If complete new sill are required, the doors will need to come off as well, and the side of the car supported to maintain door gaps, etc. This is rare as the top edge and uppermost inner sill usually survives. The rear end of the sill has a complex mounting point that rots out, just in front of the rear seat wall, again more expense.  (Neil Cairns)

Spark Plugs - short reach

If you have an early XPAG engine that uses short-reach spark-plugs, try going to your local garden centre lawnmower desk, or your local motor factors. The modern equivalent to a Champion L10S is sold as a KLG, and used in the Briggs & Stratton engines in garden machinery. Usually sold for about 65p each, cheaper than some MG specialists.  (Neil Cairns)

Loss of Oil Pressure

Recently I suffered a sudden drop in oil pressure (and erratic reading) in my YB and feared the worst.  However after much investigating and thinking I discovered it was the short piece of rubber tubing connecting the oil pressure feed lines to the instrument where it enters the bulkhead. The tube had perished and become porous.  I'm not surprised because it looked original. It was leaking oil and probably air was getting in as well worth  checking because it could save taking the engine out!  (Ted Gardner)

 Wishbone Arm Bushes

When renewing the Wishbone Arm Bushes in your Y Type (or T Type) replace them with MGB V8 ones. The part number is BHH1123 (Moss and Brown & Gammons) or R135A (NTG). The V8 bush fits inside as opposed to the standard bushes that push in from either side. With no lip to the bush they are stronger, more durable and as you only need four as opposed to eight, cheaper!  (David Pelham)

 Engine tie bar and water pump damage

Damage to your water pump casing can easily be caused by the end of the tie bar on the YA/YB/YT. The engine end is located tight under the water pump in a U shaped "cup", and is difficult to examine unless you use a small mirror and a torch or remove the radiator. The rubber bush washers rot away, and the bracket then gets a lot a hammering from the torque of the engine as the throttle opens and closes. The tie bar is there to resist this torque. Once loose, the end of the bar will punch a neat hole through the pumps casting. To check this, 'rock' the engine from side to side. You have a problem if you can hear the end rattling. There should be no movement. Correct adjustment is shown in the manual and new rubber washers are available from the Octagon CC and NTG. 

While you are inspecting this you might like to check the other end of the tie-bar as well. Movements at the other end of the tie-bar can lead to a neat crack right across the middle of the fabricated bracket that bolts to the cross member - less potentially disabling than a hole in the water pump, of course, but offering no torque reaction at all. It is worthy of note that there are FOUR bolts holding down this end. This bracket bolts to the cross member and to the top two rear bolts that hold the right hand, ( off-side in the UK,) damper. Sometimes these are not tightened fully, as they are difficult to get to. (Neil Cairns)

Hubcap removal - without chipping the paint

Removal of a hubcap, even using the special adapter fitted to the end of the wheel brace can often lead to a chipping of the paint on the wheel.  To prevent this, make up a wedged shaped tool about half an inch wide from a hard wood, use it to flick off the cap. The screw driver chips the paint because of the high loading on a tiny area.

Hubcaps falling off

Over the passage of time the small studs which should hold the hubcaps onto the wheel rims become worn, the hubcaps no longer fit securely over them, and fall off as the car goes over a bump.  A remedy for this is to buy a length of heat shrink sleeve (about 3/8 inch inside diameter before shrinking) from your local automotive electrical supplier. Cut off 3 pieces about 3/4 inch long, slip them over the wheel lugs and shrink them in place with a hot air gun.  Next, try the hub caps in place. If they're still a bit slack, shrink more sleeve over the top until the caps are a snug fit.  I found that the inside diameter of my new hub caps varied slightly, so it was necessary to vary the amount of sleeve to suit each cap. (Bill Bennett)

You can write your name and phone number inside the hub cap, if you lose one off your precious Y you may receive a call from the hub cap finder. My YT has a previous owner name inside the hub caps. A piece of history about my YT. (David Ward)

Spare wheel replacement

I am running 15" wires on my YT3208 and had a special spare wheel made which is 15 x 4".  I have fitted a 135 X15" Michelin Tyre which is available for small Renaults and fits easily into the spare wheel compartment inflated.  You cannot drive far on it but enough to get you to the nearest service station. (Richard Prior)

Fitting the sump

Fitting the sump from below is difficult because of the rear seal and the weight of the casting. This is even more so in the last larger sump cars as the sump is heavier and there is less clearance to fit it at the front of the chassis. It is of course essential to maintain the integrity of the rear seal by keeping the sump absolutely square as it goes home and not moving it about to locate the bolts. To assist this I  replaced the four corner bolts with studs. I seem to remember they are 8m.m. fine but you will know better than I do. I again made these by cutting  the heads from 60 mm. length bolts and restored the thread with a nut after filing a chamfer. These extra long studs allow you to keep the sump absolutely parallel and square as it slides upwards and into place and  there is no problem locating the remaining  bolts because they and the gasket are   neatly  lined up. If purists are horrified at replacing  those rather nicely made slotted bolts with long home made studs they can unscrew the home made studs and put the bolts back in after screwing home the other  bolts. Hope this is of use it certainly did the trick for me and because it will always allow the sump to be quickly and easily refitted I have left my home made studs in place. (Phil Waltham)

Rear Hub Splines - (peculiar to YBs)

Recently I was checking the rear brake shoes on my YB during a routine service. I was just about to refit the rear off-side brake drum, when to my horror I noticed that the splines on the inside of the drum were just about non-existent. They had worn away to about 1mm, whereas they should have been 7-8mm with a similar sized gap before the next spline. The gap between the remains of the splines was thus around 14mm!  The end of the halfshaft had some damage to the splines but far less, presumably the steel used for the halfshaft is more hardened. Fortunately, I made the discovery on my drive, as the remaining 1mm on the drum could easily have sheared through at any time, miles from home. I checked the near-side drum and found similar but less severe wear to drum and halfshaft.

    I believe the reason for this was that I had mistakenly left a little play when tightening the large hub nuts after fitting new oil seals - I should have tightened these nuts forward before fitting the split pins, whereas I had slackened them back slightly instead. Any other theories?

    I decided to fit another complete axle rather than just halfshafts and drums and fortunately I was able to buy a second hand one from Andrew Booth. A good friend helped me to fit it a week later, just in time for me to take part in the Golden Jubilee Classic Car Show at Greenwich this year (2000).  (David Hague)

Removing the radiator - the easy way

My car features a modification which was done to my car long before I acquired it (for a long time I was not even aware that it was a "mod"), it is so logical  and neatly done I thought it must have been a factory fitting.

I am talking about a modification to the headlamp holding tube which connects the headlamps on each mudguard and passes through the radiator shell.  You  will be aware that to remove the radiator one has to first disconnect, then remove, the headlamps.  The modification I have ( and now a number of other people in Sydney who have copied my car) obviates the problem of taking off the headlamps altogether .  I can now get my radiator out of the car in 20 minutes on my own and replacement takes about the same time.  All that is required is for the connecting tube between the headlamps to be replaced with a stainless steel bar of the same diameter. This bar is suitably cut and "filleted" at each end so that the bar is in three pieces with right angle joints at each connecting end.  The  smaller end pieces are each  fitted into the  chromed fitting on the mudguards and extend just outside the headlamp clamp.  The longer part of the bar is connected to each side by a counter-sunk, un-obtrusive set screw  at the joint and the longer part is that which passes through the radiator shell. After removing the bonnet, to remove the radiator all one has to do is disconnect the radiator stay rods on each side, take off the hoses, undo the two bolts holding the radiator to the bottom frame, disconnect the two bolts holding the radiator bar described, and lift the whole radiator  up and out, the headlamps are not touched.  The pictures are provided by Peter Martyn and a zip file can be downloaded here.  (Alf Luckman)

Radiator expansion tank

I know, with your cooler weather, this may not be an all-consuming problem but in the hotter climes of parts of the old Empire, overheating does become a difficulty at times.  A friend in Sydney has developed a clever idea which attaches a sealed  vertical, 1 point 5 inch, copper tube to the left hand lower part of the radiator, this is connected through the bottom of this tube, to the overflow pipe from the top of the radiator and catches any outflow from the header tank, so that the coolant is not lost. On reaching the top of the hill or slowing down,  the radiator cools slightly, the caught water is then drawn up into the header tank again and all is well with the world.   The radiator cap needs to be tight to provide a good seal,  my friend tells me the device works very well indeed and had caused him no problems.  This device also needs a couple of photos to suitably explain and these can be down loaded in a zip file here. (Alf Luckman)

Cleaning Grill Slats and Chrome

If you live in Australia or those parts of the world that have lots of bugs in the summer months you will know what a pain in the butt it is to get those baked on hoppers, insects and bugs off your chrome radiator shell, grill slats, bumper bar even paintwork.  Solution - buy one of those soft woven aluminium strip, non stick pot scourers with the foam pad inside.  Run it in well by helping your wife do the dishes a several times then with soapy water and light rubbing they make an excellent debugger that will not scratch.  Particularly the grill slats because you can push it between the slats and simply slide it up and down. (Richard Prior)

Fitting Seat Belts

Noting a comment by one of the owners of a car on the "Parade" I thought my experience of fitting  a seat belt/harness  in my car may be of interest to other people. Being fully conscious of the benefits of seat belts and very aware of the lack of that safety factor in our favourite old cars, when I restored my car I went to some trouble to check out the whole scene.

First off,  take out the front seats, the carpets and the floor boards so you can see what you are doing.  Because of the wooden floors of the Y -  the first requirement is to have a decent steel plate welded onto the chassis rails on each side about level with the rear of the front seats. This must be matched with similar plates welded to the inner framework which carries the transmission tunnel/handbrake.

These plates need to be carefully filleted onto the metal bases at the four points and beneath the floorboard level to provide the necessary strength.  Later you will need to drill through the wood  and the steel plate in order to fit the holding bolts for the ends of the  "lap" part of the belts you are going to fit.

At that point you can stop and  fit a "lap" type belt which will keep you in the car in a smash and not  have you disappear out the "suicide" front opening doors.

That takes care of the first part.  Next you will have to decide if you are going to fit a "three point" belt and if you do, you have to make up your mind where the "shoulder" strap is to be anchored.  If you are fairly short in stature (or vertically challenged) and you drive with the seat as far forward as it will go you may, repeat may, get away with bolting the third point through the top of the  pillar on which the doors are hinged.

This arrangement would be awkward as this pillar is not all that strong and should be filled up with trafficators and associated wiring.  However, if you do not have trafficators fitted (shame) the pillar can be re-enforced and the "shoulder" point bolted through, this will (probably) leave the bolt head exposed on the outside of the car.

Now comes the crunch....if you are of average height or a bit taller, you will no doubt already be aware that you sit so far back from the steering wheel that when you turn your head to the right you look out the window of the rear door.  As such it is absolutely useless fitting the "shoulder" anchor point to the centre pillar as the seat belt strap will be under your chin.  Besides being uncomfortable this arrangement will decapitate you in a decent prang.

An alternative I have seen fitted to another car, (not a Y) is to weld a reinforcing plate to the roof of the car above and behind the driver's seat and anchor the belt to that.  I would suggest that method is a major project and would only be practicable if you have all the head lining out and the car is undergoing a total rebuild.

The route I followed at this point, having discarded the idea of the three point belt system, was to fit a full racing harness and anchor the shoulder strap(s) to the top of the rear deck under the rear window.  This part of the car is immensely strong and is the right height to accommodate the fitting bolt.

The disadvantage is that if you are carrying rear seat passengers the belt to the rear ledge gets in the way.  I overcame this problem by fitting an approved racing harness which can be "broken" behind the shoulder strap and leave only a "lap" belt for the front seat occupiers.

It is not a total solution and the rear seat passengers don't have a belt at all but in my case that has not proved a problem.

I imagine it would not be too difficult to fit belts to the rear seat if that is what you need.

One last warning, don't be tempted to fit a shoulder strap straight down behind the front seats to the floor area. The distribution of forces in a solid smash would probably keep you in the car but you will end up with two broken collar bones. (Alf Luckman)

Full notes on Roy Clapham's installation can be accessed here.

Upholstery

Feed the leather seats once a year, the cream can be found at saddlers, tack suppliers, antique shops, Woolies interior-trim specialists, and good MG suppliers. Rub it in well and polish . Those supple leather seats will last for years, and the interior smells nice.  Two useful links on the Woolies site are http://www.woolies-trim.u-net.com/Leatherkit.html and http://www.woolies-trim.u-net.com/Leatherkit2.html.

Heater pump

The heater circuit in my YA never warmed up even though water would flow through it with the return pipe disconnected. I'm pleased to say that I have located a suitable pump at a ship's chandlers. It is a Zambezi Inline Pump LVM 160 manufactured by LVM Ltd. (01462 733336). Various pumps are available, but this is continuously rated (4.5 Amp) and is suitable for hot or cold water. I bought it from MarineForce Ltd (0870 010 4885 email www.marineforce.com) for about £30. Since the flow rate of 18 L/min is a bit high I added a loop back from outlet to inlet. It needs fixing in such a way that that there is a head of water to prime the pump. While plumbing it in hardly any water escaped from the heater hose. After testing and adjusting the hoses, water gushed out. It had solved my problem but not in the way expected - it had pumped out the airlock in the system. The heater now works well without the pump running, but benefits from an extra boost when the weather is really cold. David Mitchell-Gogay Y7012 UMG422.

XPAG Water Pump Potential Problem

Be aware.

The replacement pattern water pump is supplied without an essential washer.  It is easy to be misled into thinking that all that is needed is supplied as the pump comes complete with Woodruff key and stiffnut, so it appears that all one has to do is slide the pulley in place and secure with the stiffnut. The seemingly insignificant washer is not supplied; probably because it is a non-standard size.  However, without this washer distributing the load only the outer edges of the stiffnut bear onto the edge of the pulley recess, while the centre of the stiffnut is pulling tightly on the thread of the shaft. With the sidepull on the pulley by the driving belt the net result is that the inner surface of the stiffnut becomes bevelled and resembles a small wheel nut!

The pulley will wobble around and subsequently enlarge its hole. Eventually the Woodruff key in the water pump shaft becomes so worn that the pulley will rotate without driving the pump. With no water temperature gauge it could prove to be an expensive washer!

It could be worthwhile adding the 30 second physical check of the pulley to your servicing schedule. (See diagram for correct location of washer.)

Also concerning the pattern water pump and pulley is the fact that the the felt washer and its retaining cover shown on the diagram appear to be no longer available, and probably not needed since the pump bearings are now double sealed. However, as the pattern pulley is not bevelled, as the original, it bears onto both the inner (rotating) AND the outer (fixed) surfaces of the bearing!  So either turn a bevel onto the rear of the pulley or make another small washer to fit where the retaining cover would have been, but limiting its outer diameter to that of the centre of the bearing. (Another example of pattern parts not being made to original specifications.)   (Peter Cornelius)

Fitting a new Windscreen Seal

Y type restorers and those folk who just have an urge to replace the windscreen rubber seal  on Y sedans may care to note that recent experience in Sydney has shown that one (if not the best) lubricant for passing the new seal around the chromed windscreen is - wait for it - lard.  That's right - lard - the stuff people use for cooking and other culinary pastimes and is as cheap as chips to buy.  A wearying experience several years ago by the writer, of using almost every know type of lubricant including,  graphite powder, water dispersant lubricants, engine oil, washing up liquid, elbow grease,  not to mention bad language, all  in copious quantities, finally prevailed but at the time I swore never to do the job again.  Then a friend asked a little while ago to help him do a similar job on his car.  I sought ideas on the Net from the Bulletin Board of the MG Club site on suitable lubricants.  Many and varied were the responses including one from Neil Cairns who suggested K Y  Jelly.  Probably good in theory but I was not game to try it.  Even if I knew what K Y Jelly is !  Paul Barrow came up with the suggestion that Lard would do the job. He  had read somewhere that the ancient Romans used it for lubrication purposes in siege engines and other contemporary  weapons of mass destruction.   This was during the period when the Legions were doing their bit for European ethnic integration and spreading the word  to the ignorant masses they had to wipe out to make them see the benefits of civilisation.

Anyway a packet of lard was purchased (at about one tenth of the cost of a tube of KY) at the local supermarket - the new rubber -obtained from the only know supplier in Christendom (NTG Services) was worked around the windscreen fairly easily and after only 30 minutes of messy fun the job was completed.  It really is necessary to remove the windscreen from the car before attempting the job but that is easy - just undo the two bolts holding it to the swinging hinges.  It is also a two handed job - well, actually four hands, but you know what I mean, and if you work on a small table you can walk around, it is even easier.  As they say in the classics - replacement is the reversal of the removal.  (Alf Luckman)

Fresh Air Motoring

I sometimes drive my Y with the front window open, although the length of time I am able to bear the increase in noise levels from the engine prevents me from doing this too often.

If I decide to open the window, I first centre the windscreen wipers. If they are not centred before the window is opened, they are blown into the car as you drive along and will flap around causing some distraction.

If they are centred first they will be blown against the operating chain and will not flap about within your view.  (Jack Murray)

Gearbox Removal - Speed up

One of the few design faults with the MG Y series is that the toe board (the bit that the dipswitch is fixed to) is made from a single piece of metal. Therefore if you want to change the clutch or remove the gearbox for any reason then you need to remove the throttle pedal, cable etc before you can remove the toe board.  In order to speed up operations, both removal  & refitting, cut the toe board in half. The place to cut is at the top and in the middle. When you subsequently need to remove the gearbox you need only remove the toe board on the passenger side. The driver’s side can remain in place and there is no need to remove the throttle pedal. The concours judges will never spot this, as your carpet will cover the evidence.  (David Pelham)

Rear End Rust Prevention

Unfortunately the XPAG engine oil does not reach as far back as the boot on a Y Type and therefore the metal-worm frequently attacks the boot and spare wheel cover. In order to ensure that any water is not ‘captured’ for longer than it need be in the spare wheel cover and boot surrounds, ensure that the sealing rubber is placed around the top half of the area rather than the whole area. You will suffer from less rust if the sealing rubber is not fitted to the bottom half of these areas.  (David Pelham)

Brake Light Switch

The brake light switch fitted to Y Types is located in the Pedal Box. It operates by having a spring connected to the brake pedal, which when depressed completes a circuit and lights up the brake lights. It has two disadvantages in that it is ‘all or nothing’ the brass contacts either make a connection or they don’t; as it is located in the pedal box the brass contacts can get ‘grimed up’ with grease and other muck that can find its way into the Pedal Box. If you are restoring or have a faulty switch it is better to fit an in-line brake switch. The YB has 3/16 brake pipes and can use an in-line pressure switch from a TD. However, the YA & YT have 1/4 inch brake pipes and need a special in-line pressure switch. The MG Car Club Y register commissioned a special run of these. The in-line switch fits on to a dual banjo union that connects to the back of the master cylinder. I managed to fit mine using the same brake pipes! The complete kit is available from the MGCC Y Register.  (David Pelham)

As seen on the MG Bulletin Board

Remove the spare wheel before drilling the holes in the piece of wood separating the spare wheel from the boot!!!! (Anon.)

Rear Cover Plate

Whenever you have the engine out be certain that your rear cover plate is in good condition. Ideally get one of the brass or aluminium replacements from the MG Octagon Car Club. If it leaks remember that unlike the TD somebody butted the Y Type battery box up tight to it. The easiest way to replace a leaking cover plate is to take the engine out again.  (David Pelham)

Jackall Handle

The Jackall Handle is located in the Spare Wheel Compartment but it fits nicely in the top of the bracket that fixes the bulkhead to the chassis, beneath the coil. I leave mine here as it is more accessible. The space in the spare wheel compartment can then be used for your spare half shaft.  (David Pelham)

Running Boards

If your welding is perfect then this is not for you. However for the rest of us, getting captive nuts on the sills is relatively easy, getting them to align with the Running Boards can be a different story. A good solution to this problem is to use 6mm Clinch Nuts. The Running Board can be held against the sill and the location of the desired bolt can be marked exactly. It is then easy to drill the hole, fit the Clinch Nut and bolt up. If the thread goes on one of your existing captive nuts you can bore a hole alongside and fit a Clinch Nut. It has worked well on my YT.  (David Pelham)

Of Carburettors & Dipsticks

Each time you check your oil level, when you have withdrawn the dip-stick, let it drip onto each end of the carburettor butterfly, ( throttle valve).   This is a brass spindle and it runs in a Mazak casting, and wears quite rapidly. A little oil often ensures a longer life, and more even running through less air leaks.  (Neil Cairns)

Hot Spots

If your car stalls on a very hot day, and you have been moving in a slow queue, douse the carburettor body in water from your windscreen squeazy-bottle before you try to re-start. The stall was caused by the petrol vaporising in the float chamber, and to re-condense it cooling it with water really works. Otherwise you will flatten your battery before it fires up. Fit a Paxaline insulation block between the inlet manifold and the carburettor body ASAP. One from a Morris Minor/998cc Mini fits, but cut it in half length-wise or you cannot get the nuts onto the studs (they are too short). Re-route the fuel feed pipe away from the exhaust pipe run, to stop the fuel vaporising in it. Today’s lead-free seems far more prone to this fault.   (Neil Cairns)

Screen Wash

Carry an old washing up liquid squeezey bottle with water in it, for squirting at your dirty windscreen, and at the carburettor on hot days.  (Neil Cairns)

Windscreen Wipers

Keep a spare windscreen wiper and arm in the boot, today it is common to have them stolen and driving home without one fitted is 1) dangerous, and 2) illegal.  (Neil Cairns)

Tax Discs

Buy a MGCC tax disc security holder. These stick firmly to the windscreen, and have a clear disc stuck over the tax disc to stop them being altered. Such things as paper discs are easily stolen at meetings a rally’s where you left your car windows /doors open, but not missed until you next wash the car.  (Neil Cairns)

Spare Tyres

Beware buying nice fat radial-ply tyres for your ‘Y’ type. They will not fit into the spare wheel compartment. Some you can deflate to fit, but you need to carry a foot pump. Carry a puncture outfit and some tyre levers. That way you will never need them.  (Neil Cairns)

Oil Changes

Always change the engine oil before you put the car up for winter, not afterwards in the spring. It is far better to store an engine with clean oil in it. Old oil contains a lot of water in suspension, and combustion acids. These can soon eat away white metal and bronze bearings. Remember used engine oil can cause skin problems to your hands, use a barrier cream.  (Neil Cairns)

Greasing up

Grease king-pins and brake cables until clean grease come out, pumping out all the used muck. Clean it all away to keep dirt out of the bearing surfaces. Rub the used grease up under the chassis and under the inner sill areas, it helps keep corrosion at bay.  (Neil Cairns)

Gearbox / engine earth strap

Always check that the earth strap is securely refitted to the bell housing bolt and chassis after you have finished.  Failure to do so may result in high current passing back to earth from the starter motor by the quickest route.   This is normally either the choke cable (which could either give you a shock or turn into high quality fuse wire) or up the speedometer cable.  This second route can also be very expensive as it will cause your speedometer to seize up resulting in the snapping of your speedometer cable and necessitating a complete rebuild of the speedometer - this is from bitter experience! (Paul Barrow)

Broken Speedometer Cable?

Has your speedometer cable snapped?  Check the fitting and security of the Earth Return Strap (as above) and before fitting a new cable use the free ends to see which end of the cable the problem is located.  A snap at the gearbox end indicates the problem is at the speedometer head.  A snap at the speedometer end indicates the problem is the gearbox drive gear.  Take the snapped cable ends and insert the end into the back of the speedometer and try to turn it.  If the speedometer is free you will be able to turn the cable easily in a clockwise direction (speedometer facing you).  If you cannot turn it - it is seized.  Now do the same with the woodruff key end into the gearbox.  With the rear wheels off the ground and the front wheels chocked, you should be able to get the cable to turn by rotating the propeller shaft.  Failure to track the problem, and merely assuming it to have been the age of the cable will result in you having to fit another cable when you replacement quickly (100 yards or so) snaps again.  Also from bitter experience! (Paul Barrow)  See the related Technical Query.