Thread: Confused with oil separator system

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2008-09-19 20:46:51

#51

jere

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Originally Posted by robj80

wonder why someone doesn't invent an oil cap with check valve or a vacuum assisted cap. Sorta like a wastegate so when you pound it it cracks open a bit to relieve pressure? I guess you wouldn't want oil squirting out but I'm sure there could be some sort of filter?

Because obviously taking it off free's up some ponies and we all like ponies !

That is why it is best to route it over to a place that has a draw or air current ie the intake pipe. To help suck that blow by out through the little hoses. rather that running into the problems like the mustang had.

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2008-09-22 15:52:05

#52

dr.fowler

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Where would a guy find a big ol' check valve like that? a diesel truck brake check valve?

so it's the consensus that this is the best setup?

I am planning on completely eliminating the stock catch can, is it essential to run a line back down to the block, or is it even necessary as long as the catch can doesn't overflow?

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My car is getting parted out! Tons of parts on a 92 SE-R: W11 motor, S4 cams, BC Ti valvetrain, Disco Potato, GTi-R manifold, precision FMIC, 3" turbo back exh, GReddy Type RS BOV, Nismo 740cc's, Z32 maf, Aeromotive AFPR, ACT Xtreme w/6puck sprung disc, AEM UEGO WBO2, Meziere EWP w/ Davies Craig controller. 18psi boost, Progress coilovers, progress rear sway, AD22V front brakes w/SS lines, 15" TE37 knockoff wheels in gold.

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2008-09-22 16:06:06

#53

jere

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you dont have to just dont let it over flow and watch your oil level in the motor too. for the big valve there might be a big pcv valve at autozone, although i really dont know you need it

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2008-09-22 16:29:18

#54

Cliff

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Originally Posted by dr.fowler

I am planning on completely eliminating the stock catch can, is it essential to run a line back down to the block, or is it even necessary as long as the catch can doesn't overflow?

I would say YES. It is essential that you run a line from the valvecover back to the crankcase. I eliminated the stock catch can and run just the line directly connected. The main reason being that oil can and will back up the crankcase pipe and into your engine bay. This exact scenario happened to me a few weeks ago, when the line had come off the crankcase tube.

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2008-09-22 17:10:23

#55

mafoose

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Originally Posted by dr.fowler

Where would a guy find a big ol' check valve like that? a diesel truck brake check valve?

so it's the consensus that this is the best setup?

I am planning on completely eliminating the stock catch can, is it essential to run a line back down to the block, or is it even necessary as long as the catch can doesn't overflow?

If you are going to run this, I don't think you need a check valve, as the place is always under vacuum, never under boost. So us blow thru guys are stuck with getting unmetered air from there I guess? I wouldn't mind running a check valve then running it passed the MAF, but once that valve gums up, you're kinda SOL and are going to pressurize the crankcase...

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2008-09-22 17:57:44

#56

dr.fowler

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Originally Posted by mafoose

Yeah, I see what you're saying. Yeah, us blow-thru guys are stuck with getting some unmetered air, but it isn't going to be much and it should be easy enough to monitor it thru your wideband o2...

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2008-09-22 21:24:19

#57

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Originally Posted by TeKKiE

I ran it like that because the OEM catch can wouldn't clear the manifold. Just make sure you use hose clamps to secure the hose. I didn't, and the motor sprung a leak from the nipple in the block, getting oil all over the engine bay.

ok cool got it. thank you.

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