im new to the setup and needing to be vented or not. ok so im buying a new car with a B20 block and B16 head with jrsc making 220whp dose this need to be vented through the valve cover or block? the pictures i have dose not look like its vented besides the stock tube going back into the intake.

 

I am a big fan of venting from the block cause the pressure is made there and honda puts there box there too. LOOK at the endyne kit. Then buy the parts and save a Sh&t load I think I used prelude block plugs. There is a post about the DIY block breather.
I do it cause I dont run OEM PCV though.

But you probably dont NEED to... lots of debate on if it does anything. Eliminating the PCV will give you a better cleaner air to burn in the combustion process. Thats a Fact. I would reccomend it to any "built" setup just to prevent blow by and make it easier on seals. And the breather tank looks cool to boot

Nick

 

block or valve cover, it doesn't matter. problem is that there is no pcv setup with a b20vtec, since factory pcv is in the vc.