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My Catch Can Setup

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Old Dec 30, 2011, 04:50 PM
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Im venting right now, no idle problems, but have a lot of blowby, and will not be rebuilding to late next year. So its a little annoying to see the gases coming out. I want to vent it back into the manifold. But having a catch can that inputs both the valve and crank case vents, I was wondering if I use a check valve at the manifold instead of the block (hence preventing pressurization of the can) I could still use both vent into the can.


Last edited by Pirana; Dec 30, 2011 at 05:04 PM.
Old Dec 30, 2011, 05:15 PM
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The way I have mine keeps the dip stick in.I tested on dyno with a vacuum gauge on oil cap and before I would actually get positive pressure in the valve cover.after this I actually get vacuum in the valve cover at wot like -2 or so.I will try to make a video.
Old Dec 31, 2011, 08:34 AM
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I would assume (but not sure) that you should be able to connect the catch can back to the manifold through a pcv, or possibly just connect it to the intake pre turbo as the other hose does.
Old Dec 31, 2011, 01:37 PM
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Get to hoses form the valvecover to the catch can ,

connect one hose from the turbo inlet pipe , to the catch can ,

connect one hose whit the pcv valve from the inlet mainfold to the catch can ,

and you are done ! running secure ,

if you are running long hoses , make shure to have the catch van mounter at a lower point then the valve cover and the inlet mainfold , ore ealse you will have the oil filld up in those hoses , and you will blow your dipstick ,

on this point och allways have sucktion in the can , and thts good from Hp view of point !
and you wont blow anny gasket on the crank , ore your oilstick .
Old Jan 1, 2012, 01:22 PM
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^ can you rephrase your statement. I can barely understand it.
Old Jan 1, 2012, 05:37 PM
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Why not just take the fitting for the pcv and run to the can and use the front valve cover line to the can?
Old Jan 31, 2012, 02:48 PM
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Originally Posted by Pirana
Im venting right now, no idle problems, but have a lot of blowby, and will not be rebuilding to late next year. So its a little annoying to see the gases coming out. I want to vent it back into the manifold. But having a catch can that inputs both the valve and crank case vents, I was wondering if I use a check valve at the manifold instead of the block (hence preventing pressurization of the can) I could still use both vent into the can.

I just ran this exact setup today and now i notice my car is running alittle funny...I'd imagine it has to do with unmetered air running back into the intake...My question is, is this something the computer will learn or am i looking at getting the car retuned to stop the problem???
Old Jan 31, 2012, 04:37 PM
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Well i dont have a MAF, but I imagine that yes you would have to adjust the idle.
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