PCV Hose Collapsing on Idle?
#1
Thread Starter
PCV Hose Collapsing on Idle?
Hi All,
I performed the "Supra PCV Valve Mod" seen here: https://www.s2ki.com/forums/index.ph...c=513733&st=0&
I installed the extra PCV valve inside an entirely new hose (goodyear hose, not sure what ply) as it is a cleaner installation. Seen later in the thread here: https://www.s2ki.com/forums/index.ph...c=513733&st=50
When idling, the PCV hose is collapsing... but when I give it throttle it opens up immediately. I assume that the collapsing means it's doing it's job (creating vacuum), but is it OK for the hose to collapse and pinch together? Will I hurt anything? FYI - this collapsing didn't occur when I was N/A.
Just got my car back from being tuned... i'm at 350WHP and would like to enjoy it with no worries
Thanks!
I performed the "Supra PCV Valve Mod" seen here: https://www.s2ki.com/forums/index.ph...c=513733&st=0&
I installed the extra PCV valve inside an entirely new hose (goodyear hose, not sure what ply) as it is a cleaner installation. Seen later in the thread here: https://www.s2ki.com/forums/index.ph...c=513733&st=50
When idling, the PCV hose is collapsing... but when I give it throttle it opens up immediately. I assume that the collapsing means it's doing it's job (creating vacuum), but is it OK for the hose to collapse and pinch together? Will I hurt anything? FYI - this collapsing didn't occur when I was N/A.
Just got my car back from being tuned... i'm at 350WHP and would like to enjoy it with no worries
Thanks!
#3
Yeah, I had the same problem a long time ago. I bought a hose that had too thin of a wall and it would collapse. I ended up just getting a hose with the same diameter but thicker wall and the problem was fixed. You dont want the hose collapsing at all.
#5
Well, it not bad, actually. at idle, there's hardly any blow-by, so all that hose is seeing is vacuum from the intake manifold. Check.
At higher rpm, there's a tiny bit of blowby, but much less vacuum. so the hose returns back to it original shape.
Also, heat soak will soften the rubber up.
At higher rpm, there's a tiny bit of blowby, but much less vacuum. so the hose returns back to it original shape.
Also, heat soak will soften the rubber up.
#6
i used to have this problem when i was turbo and couldn't find any thick enough hosing. there's some cool hosing out there though, thats clear with a strong wire spiraling down the hose so it'll keep it's shape. can't remember where to get it from though! Tommy from gotuning has it on his car.
#7
04+ pcv valve is good, I did the Supra valve on my f20 but thats becuase I didn't trust the plastic valve. I've been running 350whp with stock f22 set up but with front breather removed/filtered. This is important to let any pressure release.
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#8
Thread Starter
Thanks for the additional responses guys.
S2000Junky -- I currently have my front breather routed to my inlet elbow for the vortech Supercharger. Is there any benefit to having the front port be a straight filter and closing the inlet elbow off? (Inlet elbow right after the main air filter)
Thanks!!
S2000Junky -- I currently have my front breather routed to my inlet elbow for the vortech Supercharger. Is there any benefit to having the front port be a straight filter and closing the inlet elbow off? (Inlet elbow right after the main air filter)
Thanks!!
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