New gasket and still leaks! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**JIMs70GMC** · 08-20-2005, 09:47 PM

I replaced my oilpan gasket today w/ a one piece gasket and the damn thing still leaks

! And it was a big pain in the butt too. Had the motor supported w/ lift, un-bolted oil pan and could not clear the cross member. Ended up removing the crossmember to get the oil pan out.
The one piece seal had instructions that said to install dry w/o adhesives. So I did, the thing leaks where the oil pan/timing chain cover meet. I think I'm going to pull it again and use some silicon. What do you guys think?

I did get my transfer case and rearend leaks fixed though

.

Mike C · 08-21-2005, 09:13 AM

I believe in small quantities of silicone where the pain meets the block and t-chain cover. Also, make sure your front balancer seal is not the source! Having an old truck that doesn't leak is a joy.

Russell · 08-21-2005, 10:42 AM

My mistake there was that I forgot to pull the old front timing chain seal out! Also made it extremely tough to install, lol

After I pulled that thing out, I re-installed with a dab of silicone in each of the four corners, and not a drip of engine oil since!

ATF on the otherhand has been dribbling out of my tranny for a while now, lol

**JIMs70GMC** · 08-21-2005, 06:49 PM

I re-did it today with some silicone and the leak is stopped. What a pain in the butt.

08-20-2005, 09:47 PM	#1
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	New gasket and still leaks! I replaced my oilpan gasket today w/ a one piece gasket and the damn thing still leaks ! And it was a big pain in the butt too. Had the motor supported w/ lift, un-bolted oil pan and could not clear the cross member. Ended up removing the crossmember to get the oil pan out. The one piece seal had instructions that said to install dry w/o adhesives. So I did, the thing leaks where the oil pan/timing chain cover meet. I think I'm going to pull it again and use some silicon. What do you guys think? I did get my transfer case and rearend leaks fixed though . __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

08-21-2005, 09:13 AM	#2
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,715	I believe in small quantities of silicone where the pain meets the block and t-chain cover. Also, make sure your front balancer seal is not the source! Having an old truck that doesn't leak is a joy. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

08-21-2005, 10:42 AM	#3
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	My mistake there was that I forgot to pull the old front timing chain seal out! Also made it extremely tough to install, lol After I pulled that thing out, I re-installed with a dab of silicone in each of the four corners, and not a drip of engine oil since! ATF on the otherhand has been dribbling out of my tranny for a while now, lol __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

08-21-2005, 06:49 PM	#4
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	I re-did it today with some silicone and the leak is stopped. What a pain in the butt. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm



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