Oil leak.. bad pan gasket?
#1
Racer
Thread Starter
Oil leak.. bad pan gasket?
I recently had some work done on my vette... a forum member that will remain nameless
He changed the oil pan gasket, and as soon as I got the car back, there's a leak from the back of the pan, under the rear main seal. I don't think the seal was disturbed (it's a 1 piece, 1990 block).
should I just replace the entire gasket, or is there anything else I should check first?
He changed the oil pan gasket, and as soon as I got the car back, there's a leak from the back of the pan, under the rear main seal. I don't think the seal was disturbed (it's a 1 piece, 1990 block).
should I just replace the entire gasket, or is there anything else I should check first?
#3
Racer
Thread Starter
The motor was only 1 year old.. didnt leak before, but the guy ripped the old gasket when he dropped the pan. He didn't touch the rear main seal, it looks like the oil is dripping out between the oil pan and the gasket, there's some kind of small lip
#5
Tech Contributor
I'll guess that he didn't adequately clean the block and use RTV in the corners per the FSM. A leak like you describe is pretty typical when someone does that.
#6
Melting Slicks
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RTV is critical...have seen some RTV no-seal cases, none since using permatex 'ultra' grey...MUST allow 24 hours for RTV to fully cure or crankcase pressure may create a flow channel (oil leak)...many shops bow to customer demand with immediate delivery after repair and RTV failure results (hope that wasn't you)
#7
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St. Jude Donor '10-'11
Reclean it, put on a new gasket(my personal preference), and use RTV. Let it cure for 24 hours like mentioned, then it should stop the oil leak. Be sure to clean up any oil that may have dripped onto the pan or other parts of the car. It will burn off but it will stink and smoke a little until it's all gone. I know from personal experience.
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RTV is critical...have seen some RTV no-seal cases, none since using permatex 'ultra' grey...MUST allow 24 hours for RTV to fully cure or crankcase pressure may create a flow channel (oil leak)...many shops bow to customer demand with immediate delivery after repair and RTV failure results (hope that wasn't you)
#10
Le Mans Master
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plan on replacing my oil pan gasket soon. Permatex ultra grey on one side of the blue rubber gasket facing the pan. Felpro kit comes with plastic pins making aligment much easier. I have the 92 lt 1. Other than the inspection plate on trans, what else has to come out to make way for the pan removal ? Starter ? etc thanks jim
#12
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#17
Le Mans Master
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Thanks
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OS34509T: Thin seal
OS34510T: Thick seal
Which type you use is dependent on your oil pan, not the block or timing cover.
Also, one-piece main seal blocks use this one: OS34500R
Here's a picture of the thick seal version (OS34510T) for 2-piece main seal blocks:
#19
Melting Slicks
Did some research on the Fel Pro gaskets since it's been more than five years since I installed mine....
OS34509T: Thin seal
OS34510T: Thick seal
Which type you use is dependent on your oil pan, not the block or timing cover.
Also, one-piece main seal blocks use this one: OS34500R
Here's a picture of the thick seal version (OS34510T) for 2-piece main seal blocks:
OS34509T: Thin seal
OS34510T: Thick seal
Which type you use is dependent on your oil pan, not the block or timing cover.
Also, one-piece main seal blocks use this one: OS34500R
Here's a picture of the thick seal version (OS34510T) for 2-piece main seal blocks:
That's the one I used and it seems to work fine on my 94.
#20
Race Director
You want the timing cover installed before the oil pan, and yes the gasket just fits in the groove. The Felpro gasket is blue and easy to see if it is seated correctly once the oil pan is installed.