I have searched through a ton of pages, and posts on the net as well as S2ki with no clear answer. I am looking for the best way to run a catch can on my f20c. My biggest issue I want to achieve is to reduce crank case pressure. I have my dipstick turned backwards to keep it from popping out currently and still get oil in engine bay mainly around the dipstick and top of valve cover, not alot but want to eliminate this. I did buy a cheap amazon catch can and piped it from the pcv and front breather and can is vented but pretty sure I do not have it set up correctly. Any help would be greatly appreciated. Please dont comment if your just gonna say try the search function or google it, as I have done that and it seems there are a bunch of answers out there. many have done this before but it seams it depends on setup and what your trying to achieve, so figured id just ask for my setup. Thanks again in advance

 

You're not going to reduce any crank case pressure with a catch can, you need to add additional vent ports to your valve cover or enlarge the existing ones.

 

Also, have you replaced dipstick o ring? Makes a huge difference. They get old, hard, shrink, no longer seal, no longer hold.

 

You need crank vents.

 

Thanks, was thinking venting through a catch can to catch some oil venting out. Have not replaced o rings but they feel pretty snug but will do that as well. If I add vents to the valve cover is there any spots better than others to do so? If I ad vents do I just put small filters on the end of it?

 

Ring groove microwelding.