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Front transmission seal not on 100-6

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Tom BN4

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I am in the process of changing my non overdrive transmission to an overdrive one I bought from another BN4. After going through it I noticed I had the front main shaft seal left over from the gasket set. The seal goes in the bell housing, Moss part number 021-192. Apparently there is no counter bore for the seal on a BN4.
Do you think it is worth the effort to machine a counter bore in the housing for the main shaft seal? The seal is located above the oil fill level. I attached a pic. Thanks,Tom
 

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Tom BN4 said:
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Do you think it is worth the effort to machine a counter bore in the housing for the main shaft seal? The seal is located above the oil fill level. I attached a pic. Thanks,Tom
Click to expand...
Yes, since you have it out and available. Mine, without the seal, leaks quite a bit of oil from the transmission.
 
John Turney said:
Yes, since you have it out and available. Mine, without the seal, leaks quite a bit of oil from the transmission.
Click to expand...
If the scroll is in good shape, and the clearance through the end cover not excessive, it should only look a few drops when you're parked.

In a perfect world!

That said, I put a modified 100/6 bellhousing (sourced through Quantum Mechanics) on my own car a few months ago. Not so much because it leaked (it did, but really, really minimally) but because I bought the thing a few years ago, and finally had to pull the trans out for another reason.
 
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