oil catch can?

prism1

prizmosis jones
May 24, 2006
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fresno
can you put an oil catch can in the na's? i like the way it looks and i dont like the hard lines that go over top of the valve covers
 

shaeff

Kurt is FTMFW x2!!!!
Staff member
Super Moderator
Mar 30, 2005
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Yes, but you're doing it for the wrong reasons...
 

prism1

prizmosis jones
May 24, 2006
203
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fresno
i understand that its for the wrong reasons but i dont care it will have some benifit. i just dont know how to go about doing it do i just block the port in the tb off?
 

Rennat

5psi...? haha
Dec 6, 2005
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NO!

the two valve covers go into one inlet on the catch can, the other nipple goes TO the TB, your engine is a vaccum, you want to keep "sucking" air out of the engine to ensure nothing bad happens in the oil pan.


and i have a catch can on my n/a... i guess it does something...?
if you hook it up wrong, your doing more harm then good.
 

gofastgeorge

Banned
Jan 24, 2008
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Rennat;952486 said:
if you hook it up wrong, your doing more harm then good.


Ditto !!

I see so many of these hooked up WRONG......
People run hoses from both cam covers
to the 2 nipples on the catch-can.

When this is done, you have just made a closed system,
and the crank case no longer has a vent.
Crank case pressure will build to the point of causing seal failure.
(crank, cams, intermidiate shaft)
Lip seals are only good for 7-10 psi.

What I did, so that I could still run 2 seperate hoses from the cam covers,
was to drill & tap a 3rd hole in the top of the catch-can.
This lets me vent it.
You can run back to the throttle body,
or just vent it with a hose down past the bell housing
(old school), but this doesn't do as good of job.

When you run a catch-can, you get less residue in your throttle body/ intake manifold,
because much of it is stopping in the catch-can.