Is it possible that the factory overboost valve could leak?

NZLeprix · Post by **NZLeprix** » Sun Sep 10, 2006 3:21 pm

The reason I ask is that when under full power, my boost guage flickers.. reads approx 7psi, but its flickering, so could be anywhere between 6.5-7.5psi.. what could cause this? I have replaced the boost guage and have the same result.. is it possible that its from that overboost valve thing on intake manifold?

SammyET · Post by **SammyET** » Sun Sep 10, 2006 6:18 pm

I think this can happen when the line to the gauge is too small or kinked??

Sam

Post by **shanec86** » Sun Sep 10, 2006 8:24 pm

or made out of plastic, or a crappy gauge. try putting a valve that you can find in the windscreen washers line. i put one in myn and stopped the flickering all together.

Post by **The Renegade** » Sun Sep 10, 2006 8:25 pm

i had one years ago that leaked.
And a mate had one that was stuck shut.

Ben Hewitson · Post by **Ben Hewitson** » Mon Sep 11, 2006 8:43 am

i swapped my over boost valve with a $2 bung from Banner cause it was leeking and not allowing me to spool over 10psi.

save your time and just buy a bung and take the over boost valve off. only one way to see if it was leaking.

Post by **The Renegade** » Mon Sep 11, 2006 8:44 am

Ben Hewitson wrote:i swapped my over boost valve with a $2 bung from Banner cause it was leeking and not allowing me to spool over 10psi.

Dude, it wasn't leaking. It was doing what it's supposed to, stop overboost. They open at around 10psi.

Post by **shanec86** » Mon Sep 11, 2006 10:30 am

It is possible to get a higher rated valve if you wanted one for piece of mind. I Used to have a 15psi one, untill i started boosting past that

Ben Hewitson · Post by **Ben Hewitson** » Mon Sep 11, 2006 11:13 am

The Renegade wrote:
Ben Hewitson wrote:i swapped my over boost valve with a $2 bung from Banner cause it was leeking and not allowing me to spool over 10psi.
Dude, it wasn't leaking. It was doing what it's supposed to, stop overboost. They open at around 10psi.

na. mine had been welded shut. and it wasn't sealing properly anyway. just do without it i say.

Post by **The Renegade** » Mon Sep 11, 2006 11:19 am

Ben Hewitson wrote:na. mine had been welded shut. and it wasn't sealing properly anyway. just do without it i say.

Ahhh, I see now....

Yeah, do without it, but don't do it without a boost guage!

Ben Hewitson · Post by **Ben Hewitson** » Mon Sep 11, 2006 2:33 pm

The Renegade wrote:... do without it, but don't do it without a boost guage!

amen brother...!