okay i stumbled onto this while surfing iwsti.com http://www.iwsti.com/forums/engine-power-performance/122522-no-oil-cap-more-horsepower.html i would be interested in some actual performance experts on this board to comment.
Well I guess it’s a good way to get rid of some excess heat from the motor but I don’t about this. I'm in the middle about this one....
hahahaha. we have a PCV system for a reason. might relieve some crankcase pressure (lots of old hotrod dudes plumb in vacuum pumps to help seal the rings better), but I wouldnt see it doing that much.
I would worry about a bug or something going through the scoop and into my head... that would totally be my luck.
Does it act like a breather? I have seen the little filters attached to the heads of a lot of Hondas. I thought they were CARB illegal though.