moddedta

I have been reading through some of the post on the pcv system on a boosted ls1. I keep seeing about using a check valve on it. What kind are you using, and where are you getting them from? I can't seem to find anything.

JAX04

iTrader: (17)

https://ls1tech.com/forums/forced-in...answer-10.html

page 10

moddedta

thanks for the link, but when i read to the last page it says those check valves aren't available anymore. that kind of puts me back in the same boat lol

Bad30th

iTrader: (13)

McMaster Carr check valve (P/N# 7775k52)

Cheers,
Rob (Bad30th)

LS1NOVA

iTrader: (12)

If you have a GM dealer close, you can go there and ask for the valves used in the brake booster recall on the 08? GMC Acadia's, Buick Enclaves, Chevy Traverse, etc. They are nice little black one way valves with nipples.

barnat

iTrader: (59)

Im going to use a GN type check valve in mine when my catch cans come in this weekend. I use to run one in my 87GN some years back. There a bit pricy, but definatly are very well made as others im sure .Just my prefrence is all.Heres a picture of it if intrested,,, that i found early today
http://www.buickgn.com/oilcatchcans.htm - 27k - Cached - Similar pages

Im just trying to figuire where the best place to locate mine would be ? Should i place it right after or before the PVC valve before it goes to my catch can? OR should i place it right before the LS6 valley pan nipple?

JoshuaGrooms83

iTrader: (2)

trying to revive a good thread and to get some clearity

Does this look correct? The PCV valve I have there will be replaced with the one way brake booster check valve mentioned above. I found one real cheap.

Ferocity02

iTrader: (60)

The PCV valve should stay because it regulates how much air actually gets through. I just got my GM check valve 20861501 in the mail and it looks like it will work well. 3/8 barbed ends, not too big. It also limits the flow about as much as the factory PCV valve so you could perhaps use it as the PCV valve too.

JoshuaGrooms83

iTrader: (2)

oh ok, then ill do that too lol. Ill place the PCV valve pre catch can, and then place the check valve post catch can.