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Thread: Oil Pan Gasket
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05-15-2011, 02:28 PM #1
Oil Pan Gasket
Found the source of my minor oil weep after pulling the transmission this afternoon. Looks like the oil pan gasket is leaking along the back rail. The rear main seal, rear cover plate, and OPSU are all clean and dry. I will be dropping the K-member to swap that out to a UMI tubular unit, so I may as well go ahead and change the pan gasket while I am there. The pan bolts are definitely snug, so that is not the issue.
Any benefit to attempting the gasket swap with the transmission out versus in? Obviously, the bottom two bell housing bolts need to be out. Not sure about how to safely support the engine except for under the balancer and at each back corner with an undercar stand. If I reinstall the transmission first, I will at least be bolted into the body so I do not have to worry about it rotating or falling completely out. Thoughts?
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05-15-2011, 02:41 PM #2
- Join Date
- Jan 2010
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- East of Cleveland, Ohio
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Black- 99 WS.6 - Modified
Not sure if it would be possible for you, but I have supported the engine from the top side via chain hoist or cherry picker - with the tranny in. Provides a very solid situation. It also allows total access to everything under the car - as I always seem to place the stands where needed, yet always in my way
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05-15-2011, 03:25 PM #3
Forgot to mention -- the car is 6' in the air right now and until I get the trans back in I have no way to lower it.
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05-15-2011, 07:41 PM #4
I had this same issue. I replace the gasket and even put the dabs of RTV and I see a leak on the back area of the pan. I remember checking with my fingers above the pan towards the RMS and didn't notice any oil.
I also heard that if you do the LS6 valley cover conversion can help with oil leaks because it lower the pressure. I might do that next before I give up with these leaks.
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05-15-2011, 08:25 PM #5
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- Oct 2008
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- Coral Springs, Fl
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- 5,774
Sunset Orange Metalic- 2001 Camaro SS
i got a brand new gm oil pan gasket if you dont have one
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05-16-2011, 03:08 AM #6
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05-16-2011, 03:25 AM #7
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05-16-2011, 03:29 AM #8
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05-16-2011, 08:43 AM #9
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05-16-2011, 09:50 AM #10
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05-16-2011, 11:04 AM #11
Mine leaks too, seems like it's going to be a real bitch, that's all i know.
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05-16-2011, 04:32 PM #12
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- Jan 2011
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- pevely missouri
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- 44
dark blue metallic- 2002 camaro z28
engine specs. because of it being a structrual part dont forget to line up the back of the machined part of the oil pan to the flat machined part of the block with a straight edge there should be only twenty thousands gap between the edge of the oil pan and edge of block.
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05-16-2011, 04:47 PM #13
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05-16-2011, 04:49 PM #14
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05-16-2011, 05:06 PM #15
I wonder if slapping RTV on it as is will help
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05-16-2011, 05:09 PM #16
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05-16-2011, 05:58 PM #17
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05-16-2011, 06:09 PM #18
I've considered it...
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05-16-2011, 06:48 PM #19
when you guys say the oil pan is a structural component, you mean it's designed so that the engine can be lifted by the pan?
also, i wonder if mine is leaking too - damn near every other potential leak point has gotten new gaskets w/in the last six months. wierd thing is the engine seems to be running very well (yes i have new plugs and upstream O2s), and my fuel mileage continues to get better w/ time.. is a slight oil leak ok?
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05-16-2011, 06:52 PM #20
The oil pan also provides support for the transmission and has to be properly aligned with the back of the engine block during installation. A leak that drips should be fixed imo. A weep that simply wets the underside of the engine, but does not drip, can be left alone... but must be watched as it will eventually turn into a drip in most cases.
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