Waste Gate Symptoms
Thread Starter
Rennlist Member
Joined: Aug 2001
Posts: 1,529
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From: Danville CA
Waste Gate Symptoms
I know many people mention that when your waste gate isn't functioning properly you can get overboost, but is it possible that the waste gate can leak or be week? I am only getting about .9 bars with my 1 bar spring. We have been checking for leaks on the pressue side of the turbo but haven't found anything.
What typically are the symptoms of a failing waste gate?
Thanks!
What typically are the symptoms of a failing waste gate?
Thanks!
Rennlist Lifetime Member
Joined: Jun 2001
Posts: 4,577
Likes: 9
From: Kansas City
Yes, it can bleed from the guide in the housing. You can tell by blowing air into the port. If the air comes out before the valve starts to lift then the guide is letting air out before the valve can move.
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Joined: Jun 2001
Posts: 2,885
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From: Concord, NC
Sameer: It doesn't matter what kind of wastegate you have or what car it was used on, if its not hooked up right, or isn't working right, is brokem, etc.
Maroun:
What size spring do you have?
Is your car still running after hitting 2 bar? If so, your engine must be incredible!!!
Brian
Maroun:
What size spring do you have?
Is your car still running after hitting 2 bar? If so, your engine must be incredible!!!
Brian
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Nordschleife Master
Joined: Oct 2001
Posts: 7,568
Likes: 10
From: Mount Pleasant, South Carolina
What kind of WG do you have?
With a Tial, you have run a spring less than you want if you are using aftermarket headers. For example, if you have GHL headers, you run a .8 spring to get 1 bar. The aftermarket headers are more effecient.
If it's stock, try what Stephen said. You may also be losing boost somewhere else in system, i.e. your O-rings, etc.
With a Tial, you have run a spring less than you want if you are using aftermarket headers. For example, if you have GHL headers, you run a .8 spring to get 1 bar. The aftermarket headers are more effecient.
If it's stock, try what Stephen said. You may also be losing boost somewhere else in system, i.e. your O-rings, etc.
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Racer
Joined: Jun 2001
Posts: 495
Likes: 0
From: Greensboro NC
I know first hand that GHL headers have too small of a diameter for the wastegate pipe. I would run a .7 spring in my tial and by 3rd gear i was getting boost creep to 1.3bar. i hacked off the old wastegate pipe and had a shorter length, larger diameter one welded in its place. I now run 1.2 bar in all 4 gears with no creep.
Rennlist Member
Joined: Aug 2003
Posts: 398
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From: Corpus Christi, TX
Got a waste gate question. I check my stock gate by using a 0-25 psi gauge and it just starts to open at 15 psi and fully opens at 18 psi. I check the spring and it appears to be after market but I have no idea what it's rated for. Is the spring to strong?
