Grainger Valve How To!!!
- Thread starter Red87GN
- Start date
strikeeagle
New Member
- Joined
- Jun 6, 2001
I don't know why you'd need the OEM plastic Y. It's purpose is to discourage turbo lag by reducing the amount of boost pressure acting on the wastegate actuator.
The Grainger Valve is effectively an adjustable check valve. It prevents ANY boost pressure from being applied to the wastegate actuator prior to the Grainger Valve's setpoint being reached...
The Grainger Valve is effectively an adjustable check valve. It prevents ANY boost pressure from being applied to the wastegate actuator prior to the Grainger Valve's setpoint being reached...
Grainger Valve?
I was just wondering about the small relief hole on the actuator side of the Relief valve. On the Dawes device there seems to be a small vent holeon the side that goes to the wastegate actuator. What is the purpose of this hole and do I need to put it on my grainger valve? The only thing I can figure it would be for is to allow the actuator to return to "home state" I guess when the valve is not relieving anything.
John
I was just wondering about the small relief hole on the actuator side of the Relief valve. On the Dawes device there seems to be a small vent holeon the side that goes to the wastegate actuator. What is the purpose of this hole and do I need to put it on my grainger valve? The only thing I can figure it would be for is to allow the actuator to return to "home state" I guess when the valve is not relieving anything.
John
ASSume you have the spring/ball type valve?
as S'eagle said, just put it in line between wastegate and turbo and when you reach the point that overcomes the valve, boost will be applied to the wastegate (lose the solenoid and y-hose)
adjust your wastegate arm fairly loose, and test to see where your boost goes....if you get a spike at first, the valve is holding more boost than the wastegate...either tighten the wastegate or loosen the Grainger
this ASSumes you do not have a bleeder type valve that holds boost at a certain level
I have the Dawes and use it for quick spoolup....the wastegate still controls ultimate boost (once the Dawes opens)
as S'eagle said, just put it in line between wastegate and turbo and when you reach the point that overcomes the valve, boost will be applied to the wastegate (lose the solenoid and y-hose)
adjust your wastegate arm fairly loose, and test to see where your boost goes....if you get a spike at first, the valve is holding more boost than the wastegate...either tighten the wastegate or loosen the Grainger
this ASSumes you do not have a bleeder type valve that holds boost at a certain level
I have the Dawes and use it for quick spoolup....the wastegate still controls ultimate boost (once the Dawes opens)
http://www.xmission.com/~dempsey/perform/grainger.htm
Check that page out. It pretty much just jacks info from Gus Mahon's website. Not sure if his site is still up since he passed on.
They work VERY well.
Check that page out. It pretty much just jacks info from Gus Mahon's website. Not sure if his site is still up since he passed on.
They work VERY well.
Taffy,
That's exactly what I was looking for. A good explanation of how to install the relief valve. Thanks
azgn,
Guess I ASSumed you read the entire post. Since the first thing I gave in my post was the Grainger part# of the RELIEF valve I was using. As I later posted I was specifically asking about the actuator side of the RELIEF valve, whether or not it needed a vent hole. It appears I ASSumed to much. Thanks for your wonderful insight.
CalgaryGN,
Go to the link that Taffy posted, it has pics and a good writeup.
John
That's exactly what I was looking for. A good explanation of how to install the relief valve. Thanks
azgn,
Guess I ASSumed you read the entire post. Since the first thing I gave in my post was the Grainger part# of the RELIEF valve I was using. As I later posted I was specifically asking about the actuator side of the RELIEF valve, whether or not it needed a vent hole. It appears I ASSumed to much. Thanks for your wonderful insight.
CalgaryGN,
Go to the link that Taffy posted, it has pics and a good writeup.
John
