After replacing a head gasket on my 87 gn I want to make sure I have the right amount of boost. I've put in a new fuel pump,hot wire kit and stock chip and the only thing that I need is to make sure of the boost so I don't blow another head gasket. Can anyone help me? Thanks, Tommy
turbo boost
- Thread starter Tommyg
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salvageV6
Daily Driver
- Joined
- May 25, 2001
- Messages
- 20,937
Test the stock type wastegate arm with regulated compressed air at 9-10 psi.
Arm should just start to move when you apply that pressure.
Should move more at 12-13 psi.
After that test adjust the arm so it's just on about 1/16" to 1/8" over the wastegate puck arm. Light tension.
Then check it on the street.
Obviously inspect the hoses for leaks and make sure the Y is correctly installed with a .050" orifice hole in it.
Assuming a stock type system.
Arm should just start to move when you apply that pressure.
Should move more at 12-13 psi.
After that test adjust the arm so it's just on about 1/16" to 1/8" over the wastegate puck arm. Light tension.
Then check it on the street.
Obviously inspect the hoses for leaks and make sure the Y is correctly installed with a .050" orifice hole in it.
Assuming a stock type system.
