crankcase pressure
Thread Starter
On The Tree
Joined: Apr 2004
Posts: 148
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crankcase pressure running 12 psi and leaking oil from somewere also blowing dipstick out, the pvc line is to a catch can and I am still getting oil on the impellar side of the supercharger. It's not the unit since it was just rebuilt by vortec, I notice oil that is under my mass air sensor and migrates down to my altenator on the driver side and I can't tell were it is coming from on the passenger side, is there anyone who knows how to messure crankcase pressure and why is there oil on my induction side of the supercharger, could it be a bad ring and do you have to pull the motor to change the rings?
need more info on exactly how you have your pvc system. its not breathing enough. might try and put a oil breather.
http://www.ls1speed.com/cont.cfm?cid=C0000193
or it could be the rings..but i think you would be pushing water out the overflow too.
http://www.ls1speed.com/cont.cfm?cid=C0000193
or it could be the rings..but i think you would be pushing water out the overflow too.
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Verdad Gallardo if it's on the impeller it's a a busted blower seal or getting pulled in from somewhere. do you have a line running from the valve cover to any pipeing in front of the supercharger?
TECH Enthusiast
Joined: Jan 2008
Posts: 625
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The blown head gasket is where the air is getting in...from the piston(s) pushing the air through the blown part of the gasket into the coolant on the compression stroke. The white smoke coming out of your exhaust is coolant being burned and blasted out because on the downstroke it sucks coolant through the blown part of the gasket into the cylinder.
Thats how I understand it anyway.
Have to agree on the head gasket. On the crankcase pressure, if the head gasket is blown you are pushing oil into the intake in front of the unit. On FI setups if you want a good proven design we do the whole thing with great results. Just search my posts. 
