Rear main seal ? Pulling clutch etc see a few drops .. - ZR-1 Net Registry Forums

5ABI VT · 10-08-2014

See some oil on the bottom of the bellhousing and on the bottom of the pan. Not sure where it's from. Heads and block look clean as does the top and sides of the bellhousing. Couldn't google too much about the rear main seal and wether it's a common source for leaks etc or how easy it is the change? Just wanted to ask since I'll be in there tonight and am hoping to pinpoint where the oil is coming from.

USAZR1 · 10-08-2014

Loose pan bolts are the first thing I would check,Mike.

5ABI VT · 10-08-2014

Definitely will double check them again. They were loose when I did the headers. Maybe I should remove clean and add some loc tite?

Pete · 10-08-2014

Also check rear main seal housing screws behind flywheel.
They also come loose.

Pete

5ABI VT · 10-09-2014

Thx Pete I'll definitely check them as well. Is the rear seal a job that requires special tools etc ? From what I google it's not like the lt1 where everyone says change it while you're in there.

Until then .. Stuck on this clutch fork stud bolt.. Don't seem to have this size :/

A26B · 10-09-2014

Quote:

Originally Posted by 5ABI VT

....From what I google it's not like the lt1 where everyone says change it while you're in there.

Until then .. Stuck on this clutch fork stud bolt.. Don't seem to have this size :/

Same deal as LT1, better to do while you have the trans out & flywheel off. No special tools required, simple job.

5ABI VT · 10-10-2014

Didn't want to make a new thread so Ill add them here. Wasn't a lot of oil but looked like some from the tube going to the valley (had to google what that was lol). The oil pan bolts were fairly tight. The seal bolts were not very tight aound 5 ft-lbs if I had to guess. Not sure what the torque specs are on those ill check the fsm.

here's a few photos

Im not sure if this is a weight? but on the flywheel this was the only small hole filled..

COmparison pic

New disc

10-08-2014	#1
5ABI VT Join Date: Jun 2013 Location: Toronto Posts: 783	Rear main seal ? Pulling clutch etc see a few drops .. See some oil on the bottom of the bellhousing and on the bottom of the pan. Not sure where it's from. Heads and block look clean as does the top and sides of the bellhousing. Couldn't google too much about the rear main seal and wether it's a common source for leaks etc or how easy it is the change? Just wanted to ask since I'll be in there tonight and am hoping to pinpoint where the oil is coming from.

10-08-2014	#2
USAZR1 Join Date: Oct 2013 Location: Wichita Falls,Tx Posts: 604	Re: Rear main seal ? Pulling clutch etc see a few drops .. Loose pan bolts are the first thing I would check,Mike. __________________ Clint & Sherry 1994 ZR-1 White/Red #152 (sold) 1991 ZR-1 Callaway Aerobody #1332 (sold) 1990 ZR-1 Red/Red #952 (sold) 2002 Z06 Torch Red/Mod Red widebody

10-08-2014	#3
5ABI VT Join Date: Jun 2013 Location: Toronto Posts: 783	Re: Rear main seal ? Pulling clutch etc see a few drops .. Definitely will double check them again. They were loose when I did the headers. Maybe I should remove clean and add some loc tite?

10-08-2014	#4
Pete Join Date: Dec 2003 Location: Chicagoland,IL Posts: 2,679	Re: Rear main seal ? Pulling clutch etc see a few drops .. Also check rear main seal housing screws behind flywheel. They also come loose. Pete __________________ '91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage

10-09-2014	#5
5ABI VT Join Date: Jun 2013 Location: Toronto Posts: 783	Re: Rear main seal ? Pulling clutch etc see a few drops .. Thx Pete I'll definitely check them as well. Is the rear seal a job that requires special tools etc ? From what I google it's not like the lt1 where everyone says change it while you're in there. Until then .. Stuck on this clutch fork stud bolt.. Don't seem to have this size :/

10-10-2014	#7
5ABI VT Join Date: Jun 2013 Location: Toronto Posts: 783	Re: Rear main seal ? Pulling clutch etc see a few drops .. Didn't want to make a new thread so Ill add them here. Wasn't a lot of oil but looked like some from the tube going to the valley (had to google what that was lol). The oil pan bolts were fairly tight. The seal bolts were not very tight aound 5 ft-lbs if I had to guess. Not sure what the torque specs are on those ill check the fsm. here's a few photos Im not sure if this is a weight? but on the flywheel this was the only small hole filled.. COmparison pic New disc