Best PCV catch can design?

[MK3Brent]

I'm trying to decide which path is best for me, and searching for PCV catch can posts isn't answering them.

Here is what I'm deciding:


1.Running the PCV ports to the downpipe, like some here have done. (Dave C, Tun-x, etc.)

2.Just recirculating the PCV back into the intake like stock, since I don't think I'll have much blowing through.

3.Getting some kind of catch can that WORKS the way it needs to, but I don't know which is best.

What do you suggest, SM?

 

[tissimo]

if you do a catch can, have the breather port run to the intake though, so will keep a slight suction at all times

 

[shaeff]

http://www.mckinneyraceworks.com/catalog/product_info.php?products_id=82

Mckinney Catch can for the win.

 

[KeithH]

OK... THAT is HOT! ^^^

 

[JesseH]

OK... THAT is HOT! ^^^

:werd: i think that is the best design i have ever seen

 

[CTsupra]

http://www.mckinneyraceworks.com/catalog/product_info.php?products_id=82

Mckinney Catch can for the win.

I <3 shaeff...

 

[suprarx7nut]

I was going to post the McKinney as well.

I have yet to see a more thorough design. But I'm a rookie, so what do i know?

 

[Keros]

Driftmotion's catch can is FTMFW, especially for the price.

Has all the stuff needed: drains, adjustability, exc... far, far superior than my "Greddy" catch can that was 4 times the price.

 

[7MGTEsup]

Driftmotion's catch can is FTMFW, especially for the price.

Has all the stuff needed: drains, adjustability, exc... far, far superior than my "Greddy" catch can that was 4 times the price.

Link???

 

[MDCmotorsports]

This is a correct catch can as posted by Shaeff.

 

[jdub]

^^^ That is a good design

The "clean air out" side need to connect to the stock vac sources on the TB and accordion hose...I would use a minimum -8 line to connect this up.

 

[MK3Brent]

Okay sounds good.

I think I'll get a couple of those.
Since the motor and head are fresh, I'm going to try running it stock at first and see if they go through.

 

[QWIKSTRIKE]

I functionally have 2 catch cans. One vacuum line off the back of the FFI going to the left side of the catch can, and the other port going to a PCV valve thats in between the hose, and the metal tube coming from the valve covers. The end of the pcv pipe that went to the turbo intake is going to one side of a catch can, and the other to the in port of the turbo completing the total catch can solution.

 

[90T04]

I functionally have 2 catch cans. One vacuum line off the back of the FFI going to the left side of the catch can, and the other port going to a PCV valve thats in between the hose, and the metal tube coming from the valve covers. The end of the pcv pipe that went to the turbo intake is going to one side of a catch can, and the other to the in port of the turbo completing the total catch can solution.

I think im going to do it that way too since I have a ffi. So what size is your port in the intake manifold providing the vacuum? The stock system does not incorporate a pcv valve, instead it has a metered hole in the TB for a vacuum source, correct? And if I understand correctly, your PCV valve is also whats protecting the crankcase from boost pressure, and thats where your hose to the turbo inlet takes over?

edit: like this:

 

[CyFi6]

I personally use a shop air line air/water seperator from sears on my NA supra. I used to use the same on my NA mr2 and it seems to work great, it has a vlave on the bottom to dump it out too and is pretty cheap. Some might think its ghetto but it works well.

 

[90T04]

hmm, sounds like a good idea as long as it can flow more volume than the blowby produced by the engine. What size ports? 3/8?

 

[IJ.]

None

 

[starscream5000]

^ I don't need no stinkin' catch can!

 

[MDCmotorsports]

I think im going to do it that way too since I have a ffi. So what size is your port in the intake manifold providing the vacuum? The stock system does not incorporate a pcv valve, instead it has a metered hole in the TB for a vacuum source, correct? And if I understand correctly, your PCV valve is also whats protecting the crankcase from boost pressure, and thats where your hose to the turbo inlet takes over?

edit: like this:

That won't work unless you have a one way check valve on your FFIM. :-(

 

[adampecush]

I think im going to do it that way too since I have a ffi. So what size is your port in the intake manifold providing the vacuum? The stock system does not incorporate a pcv valve, instead it has a metered hole in the TB for a vacuum source, correct? And if I understand correctly, your PCV valve is also whats protecting the crankcase from boost pressure, and thats where your hose to the turbo inlet takes over?

edit: like this:

I think you're defeating the purpose of the catch can like that. Under boost, the catch can will be inoperable, no? Someone correct me if I'm wrong.