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Old 08-07-2011, 07:42 PM   #9
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Join Date: Aug 2010
Location: Reston, VA
Posts: 2,674
My Ride: 77' 924 87' E30
Very well done!

However, A vacuum in the crankcase is beneficial in our case since our engines employ the use of low-tension piston rings.

That small amount of vacuum helps the piston rings seal better. among other things.

A catch can setup that creates vacuum in the crankcase would be the ideal setup.

The vacuum inside the crankcase is only about .5 inHg. I have a reason to believe that increasing the vacuum between 6-8 inHg will net some HP gains.
Bilstein HD's | E30 M3 FCAB's | H&R OE Sports | F+R strut bars | Self tuned 027 93 octane chip | KoseiK1's on R888's | + crazy OCD maintenance

Last edited by new//M3fan; 08-07-2011 at 07:57 PM.
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