Blow off valve question

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Dec 4, 2011 | 10:06 PM

zlaxbro

Thread Starter

Registered User

Joined: Jan 2011

Posts: 80

From: Cedar Park, Texas

Blow off valve question

So I searched and didn't seem to find anything. But if im installing a blow off valve then do I need to take off and plug the pop off valve that's on the intake manifold?

Dec 5, 2011 | 06:20 AM

NismoPick

The Good Twin

Joined: Aug 2005

Posts: 20,639

From: Wild Wild West, UTAH!

A blow off valve is completely different than a pop off valve.

https://www.zdriver.com/forums/280zx-s130-forums-77/installing-blow-off-valve-32888/

Dec 5, 2011 | 08:37 AM

zlaxbro

Thread Starter

Registered User

Joined: Jan 2011

Posts: 80

From: Cedar Park, Texas

So the pop of valve is only for the pressure that's in the intake manifold. So I would assume if I were to raise my boost I would have to either modify the stockpop oneor get an after market one?

Dec 5, 2011 | 08:42 AM

NismoPick

The Good Twin

Joined: Aug 2005

Posts: 20,639

From: Wild Wild West, UTAH!

Exactly.
#1: Cap it.
#2: Modify it.
#3: Use an adjustable GReddy POV (apparenly VERY hard to find these days).

Dec 6, 2011 | 11:59 AM

FricFrac

Mr Z++ Wiki

Joined: Sep 2009

Posts: 2,195

From: Victoria, BC

Another option is to use a BOV diode I think they call it. It monitor pressure in the manifold and if it reaches a certain pressure it opens the BOV. Sounds like a good idea to me...