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Oil seal on tranny


Changed the trany. Now that I don’t have the short throw shifter (pictured) I was amazed by how far you have to shift. You see how they made the short throw by drilling a second hole under the first one>

The first pic shows second gear in the proper position.
the second one shows the short throw in what it thinks is second gear you can see how it ends up then getting stuck in that position.

Removed the messed up trany and tried tranny #3 and it was in good shape, no grinding etc etc But………. It leaks oil.

I guess that the seal that covers the bearing at the end of the trany which usually ends up stuck in the bellhousing didn’t fit right.

The books are all very nebulous about this seal. Should the tranny be bolted up with it:

One Pushed into the recess in the bell housing or
Pushed flush against the wall of the trans on the shaft?

Is there somewhere else the oil can leak from?

I will pull it out in the am and try a different seal out of another bellhousing, which I hope will work.

The other bad new was that the last owner had attached the bell housing and the trany using 5/8 bolts instead of the 15mm. Therefore I am guessing that the bellhousing was stripped and they forced the larger bolts in. sadly I do not thing that I can reuse them as I have right now and one of the bolts just doesn’t seem right as it doesn’t tighten down all the way, so I guess I will have to switch bellhousing also. 

Is the oil seal on the trany shaft the same as the early vega? I know the vega shaft was longer but I am guessing the with was the same so the oil seal that the part store has might work??? Yes? No?:mad: :mad:
 

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Calvin, You can get a Heli-Coil insert kit at your local NAPA automotive store. They are pricey, but work nicely. I had to use the kit in the replacement bellhousing for my T-5. Same as you I could not torque one bolt down to specs. The Kit comes with a tap, and I was worried that I did not have a drill the correct size. I tried to run the tap down through the bad threads and it went right in and cut new threads for the heli-coil. I was then able to put in the standard bolt and torque it to specs. HTH.

Ron
 

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One of the things I've read on this site and others numerous times is that the paper seal between the tranny and bellhousing has to be in place or leaks will occur. I've never seen this on any of my 2 GTs but I will not discount what others have said about this. As far as the input shaft seal, I can't say anything about that either, I've never had a leak in that area. (Now where is that piece of wood you knock on?) HTH.

Ron
 

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I STRONGLY concur with the suggestion that you Heli-Coil (or Fix-a-Thread or whatever) the threaded holes in the bell housing. These are CRITICAL to ensuring that the transmission doesn't leak. As is the paper gasket, and also the front tranny seal.

It would make sense that the seal is the same as from an early (1971?) Vega 4-speed. If it works, let us know and it can written up in the "Parts Substitutes" forum. Otherwise, they can be bought from Gil at OGTS.

As for how to install the seal, it should be installed with a thin layer of sealer IN the bell housing recess (so it seals to the bell housing, hollow side towards the tranny), then apply a thin layer of gasket sealer to the gasket surface of the bell housing, then the gasket, and finally the transmission is installed with another thin layer of sealer on it's gasket surface

HTH
 
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