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-   -   can the wrong oil pan make this sbc leak? (http://www.hotrodders.com/forum/can-wrong-oil-pan-make-sbc-leak-76556.html)

bigwildgrin 12-19-2005 05:16 PM

can the wrong oil pan make this sbc leak?
 
on a sbc, I have an oil leak where the pan meets the timing chain cover. new gaskets didn't fix the problem, so I'm thinking maybe the pan is the problem. I do not know what year the block is (can't find any numbers and the pad has been milled) other than the dipstick is on the passenger side. this was a crate engine and I used the oil pan off the old engine. how do I tell if I need the pan with a one piece seal, or does it matter? could the wrong oil pan be why this thing wont stop leaking oil? oh yeah, the timing chain cover is new too; all bolts are tight.

poncho62 12-19-2005 05:26 PM

There are 2 sizes of front rubber seals that are used on Chevy pans..........a thin on and a thick one. Chances are you need the thick one. Also, a dab of silicone sealer in the corners doesn't hurt.

BOBCRMAN@aol.com 12-19-2005 05:28 PM

Sounds like you need the oil pan gasket with thick front seal. Many years ago I built a SBC and had to finish job on a deadline. Grabbed the wrong pan and had the same problem. AND I KNOW BETTER! just in a hurry... :thumbup:

PatM 12-19-2005 05:35 PM

The thick seal is the later edition. If you are using the old pan, you may be stuck with on old style (thin seal) pan and may have been using a new (thick seal) gasket. Bring the front seal segment of the gasket set that leaks down to your local parts supplier. The difference in seal thickness between the front pan radius and the bottom T/C cover radius is on the order of .12-.25 (that is the difference, not the thickness). Whichever seal you have, try a pan gasket set with the other one. Good Luck.

Pat

Jake_Dragon 12-19-2005 05:51 PM

How about those one piece oil pan gaskets, I was in a hurry and bought the multiple part gasket but if I ever do it again I will be using the one piece.
Is it a chrome timing chain cover? Try taking some sanding paper and remove the chrome from the gasket surface.

swvalcon 12-19-2005 05:59 PM

The chrome covers arent to bad but if your using a chrome pan throw it away.

johnsongrass1 12-19-2005 06:00 PM

Make sure the alignment dowels are in claen and in good shape as well.

Jake_Dragon 12-19-2005 06:06 PM

Quote:

Originally Posted by swvalcon
The chrome covers arent to bad but if your using a chrome pan throw it away.

Really why is that? I was looking at one today and was thinking how good it would look on my car.

matt167 12-19-2005 06:27 PM

Quote:

Originally Posted by Jake_Dragon
Really why is that? I was looking at one today and was thinking how good it would look on my car.

have a steel 1 polished then treat it with some krylon clear spray ( dosn't change chrome effect like clear coat does ). last forever. the Chrome pans have problems sealing and problems with rusting because the chrome can seal it in, when/ if some gets in between the layers, and they have been known too, not the first time I'v heard not to use 1. I wanted 1 a couple years ago for a 267 V8 ( was going to put in a '83 MB 240D, got smart and didn't waste my time ) and when I went to napa and asked 1 of the guys that I know for 1, and he told me that they had them but he wouldn't sell me 1, knowing they were junk and don't last long, so I left happy that I wasn't getting ripped off at least, and figured the stock pan would look great chevy orange like the rest of the engine.

swvalcon 12-19-2005 06:30 PM

I've never used one that didn't leak unless i ground the crap out of the gasket area to get the chrome off it so it would seal

Jake_Dragon 12-19-2005 06:33 PM

Quote:

Originally Posted by matt167
have a steel 1 polished then treat it with some krylon clear spray ( dosn't change chrome effect like clear coat does ). last forever. the Chrome pans have problems sealing and problems with rusting because the chrome can seal it in, when/ if some gets in between the layers, and they have been known too, not the first time I'v heard not to use 1. I wanted 1 a couple years ago for a 267 V8 ( was going to put in a '83 MB 240D, got smart and didn't waste my time ) and when I went to napa and asked 1 of the guys that I know for 1, and he told me that they had them but he wouldn't sell me 1, knowing they were junk and don't last long, so I left happy that I wasn't getting ripped off at least, and figured the stock pan would look great chevy orange like the rest of the engine.

I see, sounds like a good enough reason. My pan has seen its better days but is still solid. Its steel and painted the same color as the rest of the motor. Rust isn't as bad here in Florida, but I have to drop the cradle and back half of the suspension to change the oil pan. Not something I would want to do too often.


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