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LEAKING Under Boost?

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Old Aug 24, 2005 | 11:17 PM
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Default LEAKING Under Boost?

I just finished installing a d1sc on a 99 ls1 and under boost it squrits oil out of the back of the engine.I've pulled the trans and replaced the rear main and the plate. With the hope that would fix it I just can't find where or why it is leaking any help would be great.
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Old Aug 25, 2005 | 12:08 AM
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Default Leaking

Have you done a leak down test on each cylinder? Sounds like you are getting blow by on the ring package into the crank case, this would cause a positive pressure in the crankcase, which tends to find holes in the seals. One possible solution is to add vaccum to the crankcase, if you do not already have such. But be careful how much vaccum as too much will cause suspended oil mist to be removed from the lower end which can cause wrist pin failure.
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Old Aug 25, 2005 | 12:58 AM
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Maybe you screwed upteh oil pressure sensor adn it is leaking? Do you have oil pressure according to the gauge? GL man


John
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Old Aug 25, 2005 | 01:29 AM
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Have you gotten a valve cover breather yet? It should help to relieve a lot of the crankcase pressure.
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Old Aug 25, 2005 | 06:36 AM
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Question

Originally Posted by 99SS-T
Maybe you screwed upteh oil pressure sensor adn it is leaking? Do you have oil pressure according to the gauge? GL man


John

Not quite sure why the addition of an ATI ProCharger would have anything to do with a leaking oil pressure gauge, but I also agree that I would be checking the oil pressure gauge out. Bob
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