Catch can use question...

[Goat Blower]

I seem to remember doing some research a few years ago and seeing a link to excessive crankcase pressure and small amounts of knock.


I have both fittings running through vacuum tubing to atmosphere, no PCV valve. The thing I've noticed already is there is alot of pressure at WOT, enough to break my vacuum tubing twice. I'm going to run -8 or -10AN lines out of it to a custom aluminum one-quart catch can when I get around to it. I believe Brent has something like dual -12AN lines out of his.