My New Catchcan Design

[Abo Bob]

Ok I've designed a new catch can for myself. I made up a full size model and test fitted it. Seems to fit alright.

Do you think it will work?

My current one doesn't catch any vapours, only liquids from track day poor oil control. (I built my engine before the oil control thread )

Catch_can.pdf

[Adriano]

I would always run a hose from the bottom of the catch can back to the sump with a 1 way valve if necessary. Another thing that i have being toying with is running a breather from the crankcase from somewhere away from the crank, trying to catch the blowby before it gets up into the head, which slows the return of the oil from the head which appears to be the main cause of this problem. The catch can may want to be a little wider, as the wider it is the slower the gases will be travelling through it. It is a case of bigger is better. You may also get a benefit of running two separate breather hoses from the rocker covers to the catchcan.