PCV & Catch Can Questions

[92cavquest]

I'm building for a decent amount of boost and was just wondering if anyone has input on a catch can setup.

I'm thinking my best bet will be to -an fittings into each valve cover, run a hose to a catch can w/ an inline check valve, then run the drain from the catch can back into the pan.

Does anyone have any input or pics that could help me out? Is there anything I'm overlooking?

[walterdude]

Give Hayes Performance a holler or search through his threads.... He has recently discussed this in detail... It was about a DOHC but the basics "should" apply... It has been discussed in many other threads also....
Good luck,,
Tom...

[geoffinbc]

www.cantonracing.com and http://www.moroso.com/ should be of some help. If you don't buy their products you can at least steal some ideas.

Canton calls them breather cans or breather catch cans. Moroso is probably similar

[Azrael]

I hear of some people using moisture traps from air compressors with some success as oil catchcans.

[ForcedFirebird]

I hear of some people using moisture traps from air compressors with some success as oil catchcans.

Like these I made?

[Monzsta]

On heavily boosted engines it's typical to run a large diameter AN line from each valve cover straight to a dedicated catch can that has a filtered vent to atmosphere. There is no real need for PCV action in this application. If you absolutely felt the need for a PCV, then you would allow it to exist as normal and add the system as a seperate add on, eliminating the valve cover-to-intake hose plumbing and allowing the pcv system to draw through your catch can filters.

The reason is to maintain a near zero crancase pressure even under heavy blowby inevitable from boosted engines. Turbo seals have no tolerance for pressure and many smoking turbo's are the result of inadequate venting.