Is this normal

Reply Subscribe

Thread Tools

Search this Thread

May 3, 2007 | 11:51 AM

Funkybird

Thread Starter

TECH Apprentice

iTrader: (4)

Joined: Jul 2005

Posts: 386

Likes: 0

From: Utah

Is this normal

I was checkin out my piping the other day and noticed I had some black leak marks on my bypass valve so I cranked it up and just at idle both sides of the shaft are leaking ALOT! This isn't normal is it?
Below is a pic of the type of bypass valve i'm running.

May 3, 2007 | 12:52 PM

andereck

TECH Resident

Joined: Oct 2005

Posts: 787

Likes: 0

It is normal to have some airflow past the shaft, it is so insignificant that it make no difference in performance and assures the valve doesn't stick.

May 4, 2007 | 10:29 AM

Funkybird

Thread Starter

TECH Apprentice

iTrader: (4)

Joined: Jul 2005

Posts: 386

Likes: 0

From: Utah

Just to clarify, i'm talking about on the outside housing where the center shaft rotates is where its leaking out. Not past the valve itself on the inside. I don't think it should be?

May 4, 2007 | 11:06 AM

Fire67

TECH Fanatic

iTrader: (3)

Joined: Feb 2005

Posts: 1,118

Likes: 0

From: Naples, FL

Just to clarify, thats exactly the part andereck was describing... Those valves all do that.

May 4, 2007 | 11:19 AM

hellbents10

LS1Tech Sponsor

iTrader: (10)

Joined: Mar 2004

Posts: 4,439

Likes: 4

From: Spring Lake, MI

Is that a ATI one by chance, we have seen 1-2psi increases in boost pressure by going from that unit to there race bypass. Yes it is common for those to leak a good amount of air.