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MG MG Y Type - Tappet chest breather pipe

So, Moss Catalogue for the TC/TD/TF shows the 2 different breather pipes for the TC and TD/TF. I need one for my YT but I have been advised by Skip Kelsey/Shadetree Motors that they are both different to the length of a YA/T and have a different angled bend in them.

Is that true does anyone know? Also, if it isnt, which do I need and if it is, anyone got a spare YA/T one I can purchase please?

Thanks

Paul
Paul Barrow

Why not install a PCV valve instead of the pipe?
Scott Barrow

The NTG catalogue does not distinguish the breather pipe between the TC,TD,TF,YA/B. AS lists it only for the TD/F. David Lawrence gives a detailed list of engine changes from the TC to Y but I can find no mention of any change to the breather pipe.It may be so insignificant that any change is only noticeable if you are comparing two pipes side by side.If I had to guess I would think that the TD pipe would be the same as that for the YT as the YT engine went into the TD with few if any changes.
I replaced the side plate with an after market one that does not use a breather pipe. I have somewhere the plate and pipe that was taken off.The engine has been rebuilt at least six times so can't verify that the pipe is original but it probably is.I will try to find it and compare it with the one on my TC and take it into the shop to compare it with one from a TD.Sorry Paul but the pipe stays with the car. Terry
Terry O'Brien

Scott - you know me better than that :-) I am a "Stock" car man!!

Terry, pity you want to keep it, but yes please, if you can compare them and let me know. I cannot believe the difference to be earth shattering, but dont relish the idea of oil breather exhaust all over everything in the engine bay.

Any one else got any knowledge please?

Thanks

Paul
Paul Barrow

Paul - I've now looked at our TF (1954 1250 cc) and YT side by side and the short right angle pipes welded to the cover itself both have a rib (for strength?) and the same clamps. The pipes appear to be the same length with a kink for clearance or to bring the pipe closer to where the lower clamp is attached.

As neither car has these lower clamps (as shown looking the same in the TF Parts List diagram and the Y Workshop Manual) I am not sure where the clamps attach but they have a flat piece of, I would say 2 to 3 inches with two bolt holes and a collar or clamp with one nut and bolt for tightening The end of the flat piece bolts on, I think, through a bellhousing bolt and the nut and bolt tighten the collar or clamp around the pipe. The clamps top and bottom are therefore very different.

Hope all that helps.

All the best

Rob
Rob Dunsterville

Thanks Rob. Terry, looks like its now down to a comparison between the TD and you YT please if you can. Look forward to the resolution of the mystery!!

Beats watching the telly doesn't it??

Paul
Paul Barrow

Paul

I will try and send a couple of photos of the YA and YT pipes as fitted to my stable mates. I seem to recall a few cover plates somewhere in my archive ... but need to remember which pile of parts (sorry, which logically and easily retrievable assortment) currently contains them. I cannot recall if the pipes are with them.

My last foray into pipe maintenance was after the head gasket went on the YA some years ago... pipe ended up rather asthmatic with frothy fluids!

Best wishes for 2006

Andrew & Arlene
Andrew Coulson

The pipe on the TC is certainly different from that on the YT. It is about 20" long compared to 15" for the YT.
Since the TC pipe is on the car it is difficult to compare the bends in the pipe but just eyeballig the two aide by side the bends look similar. The TC pipe clamps to the bell housing about 4" from the end of the pipe, the clamp on the YT pipe is about 1" from the end. So the TC version extends below the bottom of the engine. Terry
Terry O'Brien

I just checked my YT(50) & TD(51) (both with original engines-although I can't guarantee that the pipes are original but appear to be). From the bottom of the pipe to the middle of the top clamp (both in-situ)were, YT 14 1/4"(360mm) & the TD 18 1/8"(460mm). Allowing for the extra inside the clamp may mean around 15" & 19". FWIW.
Bob Simpson

Thanks Terry and Bob. The TD then is clearly longer(though why would be anyones guess). I would have thought that the bends would all in the same places though and approximately the same angles.

Dare I say it, but thanks for the "Interest" everyone has shown?? I have been offered one by an off-line contributor in the UK which I am going to take up rather than buy a repro made in china (and stamped made in england) from one of the mass MG suppliers(no names, no lies!).

Thanks again.

Paul
Paul Barrow


Gentlemen

Since the YA/YT are actually sister models of the TC, it would make sense to me if the Ys used the longer TC type tube.
It could well be that a change to short length pipes took place with the introduction of the YB.

Happy motoring
Anton
Anton Piller

The Octagon CC lists two pipes, one for the TA/TC/YA and the other for the TD/TF/YB. Why the YT pipe is significantly shorter is a mystery. Terry
Terry O'Brien


Hi all

Probably Abingdon realised, that the long pipe is in the way, when taking the engine outof the chassis and putting it on the floor.
Even though, I go to great lenght for originality,in this case I go for the short pipe because of practical reasons (and nobody would notice anyway!

Anton
Anton Piller

This thread was discussed between 28/12/2005 and 09/01/2006

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