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Old Dec 29, 2006 | 12:06 AM
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From: Burton TX
Default Valve cover vent

If I put a vent and filter in place of my oil filler neck to vent the motor do I still need my catch can or will it be worthless?
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Old Dec 29, 2006 | 01:21 AM
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Still need it. All you are doing is allowing blowby to escape.

I wouldn't run one unless you are FI.
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Old Dec 29, 2006 | 01:54 AM
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Your catch can should be mounted off your valley cover vent/PCV hose connection. The valve cover breathers are for the most part an air intake, not out-vent.
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Old Dec 29, 2006 | 03:48 AM
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From: American Canyon Lethal Injection
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Check out this thread I started on this, you may find your answer there. subjhttp://forums.corvetteforum.com/showthread.php?t=1550303&highlight=catch +canect...
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Old Dec 30, 2006 | 12:47 AM
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Originally Posted by SleeperC5
Check out this thread I started on this, you may find your answer there. subjhttp://forums.corvetteforum.com/showthread.php?t=1550303&highlight=catch +canect...
I read through it all, wow. Here is my problem, after getting up in hp 450rwhp on motor plus 2 stages of nitrous Im getting alot of oil in my intake. I have been told on nitrous cars venting the motor helps. I pulled my heads, and intake off and the intake is coated. Before when I was cam only no nitrous I didnt have oil in the intake very much. My catch can has alittle oil in also.
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Old Dec 30, 2006 | 05:25 PM
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From: American Canyon Lethal Injection
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Originally Posted by minytrker
I read through it all, wow. Here is my problem, after getting up in hp 450rwhp on motor plus 2 stages of nitrous Im getting alot of oil in my intake. I have been told on nitrous cars venting the motor helps. I pulled my heads, and intake off and the intake is coated. Before when I was cam only no nitrous I didnt have oil in the intake very much. My catch can has alittle oil in also.
In this case I would try venting the VCs. My tuner has his vented w/o any problems. As you may have seen in my thread some post claim "unmetered" air causes problems. I had also "T'd" off my vacuum lines from the VCs into the inlet of the catch can, but this didn't work form because the engine wasn't getting outside air to engine crank case. So it seems for your case maybe this will work for you having both VCs T'd into intake of catch can, plug off the upper inlet to the TB and venting both VCs. I'm sure this will open a gate of opinions and someone will chime in with a better answer. Good luck
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Old Dec 31, 2006 | 01:00 PM
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First of all the breather on the valve covers is not an air intake. Youre an idiot. its a vent, and used when you are F/I or nitrous and get alot of blowby into the bottom end so you dont build to much pressure. some of the earlier valvecover setups does have a fresh air line on it and it will plug in before the throttle body. You have a few options you can use a better catch can than what you have on it or you can do what a couple of us are experimenting with right now and use an external vacuum pump and pull a vacuum on the bottom end and either vent the leaving air back into the intake or just out to atmosphere. Seems to help rings seal better, do away with oil leaks, and makes breaking oil surface tension on standing oil easier for crank. C6dude probably has the coolest setup that I have seen. Seems to be very functional. Do a search for his threads.
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Old Dec 31, 2006 | 01:48 PM
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man be nice to the guy hes no idiot lol, he did say he had nitrous on his car
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Old Dec 31, 2006 | 03:38 PM
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From: American Canyon Lethal Injection
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Tyson-No need in name calling and labeling people as "idiots"..he is trying to solve a problem here. Besides that comment the rest of your input was helpful...have a nice day..
SLPRC5
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Old Jan 1, 2007 | 07:56 PM
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From: Burton TX
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Originally Posted by TYSON1997
First of all the breather on the valve covers is not an air intake. Youre an idiot. its a vent, and used when you are F/I or nitrous and get alot of blowby into the bottom end so you dont build to much pressure. some of the earlier valvecover setups does have a fresh air line on it and it will plug in before the throttle body. You have a few options you can use a better catch can than what you have on it or you can do what a couple of us are experimenting with right now and use an external vacuum pump and pull a vacuum on the bottom end and either vent the leaving air back into the intake or just out to atmosphere. Seems to help rings seal better, do away with oil leaks, and makes breaking oil surface tension on standing oil easier for crank. C6dude probably has the coolest setup that I have seen. Seems to be very functional. Do a search for his threads.

Who are you talking to, I must be missing something. Who said it was an air intake?
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Old Jan 1, 2007 | 09:21 PM
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"Who are you talking to, I must be missing something. Who said it was an air intake?"

Must have been on another thread 'cuz I didn't see anything about an intake either.

And, Tyson1997 - ya gotta quit holding back, dude, and tell us what ya REALLY think.

Charlie
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