oil leak between bell. and trans (cont.)

**Greg Vaka** · May 9, 2003, 10:45 PM

Re: oil leak between bell. and trans (cont.)

Is there a plug in back of the cam bearing that could be leaking oil.

**Craig S.** · May 9, 2003, 11:24 PM

Re: oil leak between bell. and trans (cont.)

Jack - I had one engine in the past that was leaking on a lifter galley plug. Of course, the bad thing is it means pulling the transmission at a minimum to fix....Craig

**Chuck G.** · May 10, 2003, 03:16 AM

Re: oil leak between bell. and trans (cont.)

Years ago, I had a similar "oil" leak on my 63 small block. Thought it was the rear main seal, etc. Turned out to be the front transmission bearing/seal. The "oil" leak was actually 80/90 weight gear oil. It kept dripping right out of the bottom of the bellhousing. Worth a look if you've exhausted the other possibilities, i.e. rear intake, distributor, valve covers, etc. Chuck

**Larry S.** · May 10, 2003, 08:01 AM

Re: oil leak between bell. and trans (cont.)

I am sorry for the delayed responce to your problem I could not find your thread again.I had a simular oil leak 427/425 with m21 and a lakewood scattersheild.The oil leak would spray oil inside of the bellhousing/scattersheild all over the clutch and then drip down.I had my tranny out several times and was sick of it.Do a search of the archive here and corvetteforum.com I was given excellent advice on the tranny.I had my tranney rebuilt and on mine there were no per say seal around the input shaft of the tranney it was a (wiper seal?)any ways it ended up being that a shaft and bushing was egg shaped worn funney because of the scattersheild not aligning proper.Alos bubba (Or My father in law) had used gasket sealer on the trans while reinstalling the front nose on the trans and it had gotton in a oil drain back port.The hole was not completely blocked but i guess enought for the oil to puddle and then be brought back up to the shaft and wicked out in to the bell housing.I had my trans rebuilt by ed hartnett 610-623-9381 and was thrilled by his work.he was a plessure to deal with I have not had a leak since. My advice to you is to rebuild the trans (not as bad as it sounds) and to lose the scatter sheild.

Also every one kept suggesting it was a poor main shaft on the trans and allthought I had bad fitment around the main shaft that I was able to fix with liberal gasket sealer on the case.when that did leak it leaked between the bellhousing and the trans not into the bellhousing.Email me if you want to speak I was chasing this leak for a while and I wasted alot of time and effort and money and clutches thinking my trans works well why rebuild it for a simple leak.Trust me have it rebuilt.

input shaft= the one the clutch rides on
main shaft=is the one you see on the front of your trans at about 7 o clock

OIL LEAKS STINK!

**Dennis C.** · May 10, 2003, 02:10 PM

Re: oil leak between bell. and trans (cont.)

Larry - I've got a leak I'm trying to deal with now. It seems to match your description of the trans main shaft leaking 80/90 and coming out between the trans and bellhousing - not into the bellhousing. Please describe your sealer fix. Trans all the way out ??? Mainshaft out ??? Of course, I'm looking for the painless cure. Thanks, Dennis

**Dennis C.** · May 10, 2003, 02:13 PM

Re: oil leak between bell. and trans (cont.)

In addition, I'm using synthetic 80/90 oil. An unsolicted opinion I heard recently is that synthetic oils are more prone to leak. Comments, please.

**Craig S.** · May 10, 2003, 02:23 PM

Re: oil leak between bell. and trans (cont.)

I would second Ed Hartnett on the Muncie rebuild, or for advice if you do it yourself. A few years ago, Joe Lucia and I were in an advanced hands on class he taught at Bloomington and he was a nice guy, very helpful, and informative. I would have not reservations at all sending him my transmissions for service. Your point about the shaft and hole in the front case is very valid, they wear oblong and leak, and to only correct fix is to have the case rebushed to fix the problem, using sealer is a short lived or non-existant fix. And the leak will drain down to the same place as the engine oil on the bellhousing, but, it is easy to tell gear oil from the sulphur smell to differentiate what type of leak you are experiencing....Craig

**Larry S.** · May 10, 2003, 03:11 PM

Re: oil leak between bell. and trans (cont.)

Dennis the consencus was when I had my leak to ged rid of the synthedic and I did on the rebuild.I agree we craig about it being a short lived fix.And I hate to advice you to do it.But with the trans out and the bellhousing off.looking as if you were the motor and looking toward the rear of the car on the face of the trans where it mounts to the bellhousing towards the left at around 7 o clock is a steel looking circle that is the main shaft and that was one of the leaks I had I drained the synthedic tranny fluid out,stood tranny up on its tail cleaned the shaft area with break cleaner and then smeared sealer on the shaft into the surrounding area.The correct fix was to have the tranny case rebushed. Any ways I do have to say If I could do it all over again I would imediately remove the trans and send it to ed dont waste your time.As I said be fore

OIL LEAKS STINK!

**Mike M.** · May 10, 2003, 03:51 PM

Re: oil leak between bell. and trans (cont.)

dipstick: are you dealing with a T-10 or a Muncie?mike

**Dennis C.** · May 10, 2003, 05:13 PM

Re: oil leak between bell. and trans (cont.)

Mikie - We be deal'in w/a T-10. I don't own anything new enough to have a Muncie. Dip

**Mike M.** · May 10, 2003, 05:49 PM

Re: oil leak between bell. and trans (cont.)

Remove all 4 tranns to bell bolts but don't withdrawl tranny yet;reinstall 4 one to 2" longer bolts into the tranny/bell then pull the T-10 back till it bottoms out on the 4 longer bolts you have previously only threaded 2 or 3 full turns into the bell.This allows access to the cluster gear shaft which , if you bogus tanker has an Alum T-10 case ,will allow you to thouroughly clean the junction of the case and the cluster gear shaft(I like ether as solvent). Then coat the shaft and case with THE RIGHT STUFF byPermatex(29208) then within minutes, tighten the tranny to the bell. This has worked on muncies that commonly leak at the tranny/cluster shaft.If your vet has a cast iron T-10 (which none of yours should but then again they may have MOPAR torqueflite as you getting too old to shift for yourself) then it's probably not leaking at the case/shaft.Above is a quick diagnostic(and usually therapuetic fix if and only if the leak is at the shaft/case bore.Beelzebub, #14

**Dennis C.** · May 10, 2003, 06:40 PM

Re: oil leak between bell. and trans (cont.)

Your idea is probably better than my thought of putting 1/4 cup each of STP, ground pepper and Aluma-Seal in the tranny. Think I'll give your fix a try - can always do it right another day.

**Mike M.** · May 10, 2003, 06:46 PM

Re: oil leak between bell. and trans (cont.)

Didn't you try sawdust once?

**Dennis C.** · May 10, 2003, 06:55 PM

Re: oil leak between bell. and trans (cont.)

Yeah, but I put that in the crankcase trying to and get my oil pressure gauge to work.