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Old 08-08-2011, 10:04 AM   #11
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Join Date: May 2011
Location: UK
Posts: 217
My Ride: 330Ci Clubsport
Originally Posted by newe46fan View Post
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.
Thanks, are you talking about the oil control rings specifically or also the compression rings?
'04 330Ci Clubsport | Estoril Blue | 6MT | Black Leather/Silver Cube
Turner Motorsport | Ground Control | Stett Performance | Moroso | Powerflex | Meyle HD | Goodridge
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