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Stock Recirc Valve Leaking?

HYBRID VL

By HYBRID VL,
in Engines & Forced Induction

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HYBRID VL Community Regular

HYBRID VL

Posted
Posted

ok yesterday pulled the pipe off that goes between my intake and Stock BOV and i put my hand on the outlet and it feels like air is leaking out.

can i block this valve up cause it feels like its leaking on just idle.

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https://www.sau.com.au/forums/topic/420805-stock-recirc-valve-leaking/
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HYBRID VL Community Regular

HYBRID VL

Posted
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are they supposed to cause i was under the impression that the BOV shouldnt leak at all only when released when off throttle.

If this is so would blocking the recirc valve like a plate to block it all do any justice or damage to my motor or alter AFR?

Got a Pulsar Grand Master

Got a Pulsar

Posted
Posted

Not sure why they leak but as long as the air is recirculating within the piping it is ok.

If it's not plumbed back in, then there is an air leak which causes issues.

Leave it as it should be.

scotty nm35 Grand Master

scotty nm35

Posted
Posted

You can tap and grub screw the bleed hole, it works ok, but drivability will suffer. It can shudder a bit when backing off from boost to a light cruise.

The factory put the hole there for a reason, to make it drive smoothly. If you are still on the stock ecu, it's best to leave it alone.

  • 2 weeks later...
HYBRID VL Community Regular

HYBRID VL

Posted
  • Author
Posted

ok kool so what if i replaced it with a exit atmo BOV it will play up im guessing also with a 10 psi limit can i put another spring inside the unit or somthin so i can leave it stock and run more boost?

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

Don't do that, you're going back to the dark ages.. just leave it how it is. I ran 1.3bar though a stock BOV no dramas at all, a simple relatively mod is to crush the top hat down using a vice to put more tension on it.

But you're running 0.7bar of boost, don't waste your time with it.

STATUS Grand Master

STATUS

Posted
Posted

ok yesterday pulled the pipe off that goes between my intake and Stock BOV and i put my hand on the outlet and it feels like air is leaking out.

can i block this valve up cause it feels like its leaking on just idle.

Its designed this way to stop reversion and to smooth the idle, nearly all skylines are supposed to do it.

HYBRID VL Community Regular

HYBRID VL

Posted
  • Author
Posted

ok so what about block the BOV up all together i really hate the noise to be honest ive lost my licence before and i now require my licence for work so last thing i want is attention from coppers with noise my car is stock thought has 3 inch exhaust and yer im abit worried about that aswell.

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