LT1-LT4 Modifications 1993-97 Gen II Small Block V8

pouring smoke at 6k...

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Old 05-11-2012, 10:05 PM
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So why is my car pouring smoke out like crazy when i get over 6k and when in boost. It is not fuel it's oil and is horrible. It's all the sudden started doing this. I've got my left valve cover closed, right has a breather and hose hooked to the inlet of air filter, i unhooked it and it still does it. I have my pvc hooked up to a one way valve so it is not suposed to "charge" the crankcase... this is crazy anyone ever dealt with this?????????????
Old 05-11-2012, 10:41 PM
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Might be your valve seals.
Old 05-11-2012, 10:48 PM
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Boost is overwhelming your piston rings. Are you still on the stock bottom end?
Old 05-11-2012, 10:51 PM
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sounds like rings to me
Old 05-11-2012, 10:52 PM
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Either your getting blow by or your blower is sucking oil.
Old 05-12-2012, 01:51 PM
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No its not the stock bottom end but has been to hell n back on this build its stock rods, crank n forged pistons... if it were rings or valve seals it will foul that holes plug, sucking oil??? Maybe i'm wondering if its coming through the pcv system. This may take some time to figure out.
Old 05-12-2012, 01:54 PM
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I know the rod bolts aren't strong and will stretch, but how much are the stock rods rated to?
Old 05-12-2012, 02:03 PM
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I should be safe unless my car is putting down more than others its got all long tubes a hot cam n roller rockers 50lb injectors 12lbs. My right header is oil soaked on the outside as well as the starter... this smells like burned oil not burning oil in a combustion chamber if that makes sense
Old 05-12-2012, 02:18 PM
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Well shooting oil onto the headers will cause it to burn. Obviously with higher RPM higher pressures inside the engine cause more oil to shoot out cause more smoke at higher RPM.

Is the smoke coming out the tail pipe?
If its coming from the engine bay look for an oil leak.
Old 05-12-2012, 02:31 PM
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is it comming out of the tail pipe or out of the engine bay? if the header i sock of oil im guessing out of the engine bay. if so check the valve covers. or pcv valve thats the spot that will get oil on the headers. it sound earlier that it was coming out of the tail pipes? do you have ventilation on the valvecovers/ breathers/ catch can?
Old 05-12-2012, 02:47 PM
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If its coming from the bay make sure your dipstick is seated and bolted down.
Old 05-12-2012, 03:21 PM
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I thought it was my tailpipe but not so sure now. Its defanantly got oil all over the headers and has a leak just gotta find it. Thanks guys you all are correct it must be the dipstick, valve cover or where? It has no catch can but has a breather along with a one way valve in my pcv line which is hooked up
Old 05-12-2012, 03:25 PM
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Check the dip stick, the rear of the VC and the rear of the intake for leaks. I had the same prob once when my dip stick wasnt all the way seated and at high rpms it would spray the headers and smoked like crazy..
Old 05-12-2012, 03:32 PM
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Sounds good



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