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e9Leveque

e9Leveque

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Engine runs, very minor oil leak I had to deal with, but I have a very obvious transmission leak. Grrrr. I suspect I’ll need to drop transmission and make sure I have all of the seals installed correctly. One thing I came across was post#2 in this thread
https://e9coupe.com/forum/threads/transmission-removal.8351/
which says “make sure to put liquid gasket between bellhousing snd transmission”, which others then agree with, but I’m with the original poster - shouldn’t the transmission be a sealed unit while the bell housing remains dry? I do seem to have some leak there, which would seem to indicate a leak from the front of the transmission. I suppose if I had placed a liquid gasket sealant I wouldn’t see that leak but isn’t that then just hiding a leak which is slowly building up within the bellhousing?
These same questions were asked in the prior thread but no answer…
 
The trans itself should be sealed. The bell housing just bolts to it. There is nothing to seal between the trans and the bell housing, and the bell housing is more or less open to the outside world.

Sounds like a front trans seal...
 
I forgot which transmission you have?
I think there were 2 different 4 speeds in our cars over the years. The getrag does not need sealant there, the trans case is sealed. But there is a cover for the input shaft that needs a gasket or sealant.
 
New 5-speed, the 265/5 non-dogleg. The transmission came to me “sealed” but I suspect one of the seals that I needed to put on may not be on there fully. At least when I take it apart it will be obvious because there will be a drip line!
 
Just another thought, are you sure it's oil and not brake fluid? If the slave cylinder is leaking it would/could drain of the bottom of the bell housing. It's a lot easier than pulling the trans out. Another thing, did you put lockite on the flywheel bolts? I've seen oil leak thru those bolts before too. Good luck.
 
I don’t believe it’s brake fluid since the reservoir hasn’t drained much. I did rebleed the slave cylinder since the clutch felt a bit loose but there didn’t seem to be any issue there. But good point - I’ll collect some of it and see. It also significantly picks up speed in draining when the engine is running which I wouldn’t imagine brake fluid would do. It also doesn’t feel like the same consistency as the brake fluid.
I guess three possibilities - transmission fluid, brake fluid or oil. I’ll collect a bit and assess before I drop the transmission, but I’m already getting in the mindset of having to do that…
 
Hmm. Can you explain that? I thought oil pressure light was from sensor off the side of the head - I added a pressure sender there. I assume you’re talking about something else…this leak is way down low.
 
If it is leaking from the oil switch it will run down the back of the engine and drain off the bell housing. Easy to check, just take a look the switch, if you see oil there that's your problem.
 
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