C
Chaz
Guest
I am hoping that someone can figure this out, because I am lost
I have a greddy T7833D turbo on a Greddy manifold with a Greddy wastegate. The wastegate is mounted upside down and discharges under the car. I have a Greddy Profec B spec II boost controller and that is where my problem is
As the directions read, I ran from the top of the wastegate (which is the bottom for me) to the COM port of the solenoid. Then I tapped a line into the IC piping very near the turbo and ran a line from there to the bottom of the wastegate (or the top for me, or it really should be called the side of the wastegate). Then I put a "T" in that line and ran it to the NC side of the solenoid.
If I do that, the waste gate opens at 10 PSI. If I pull the line off the COM port of the solenoid and plug it, it will do about 11.7 PSI. If I leave the com line plugged and move the NC line around to the COM port, It does 16 PSI, which is where it should be as I have the Wastegate adjustment run about 3/4 in and am using a 11-17 PSI spring.
Nothing I do with the unit inside the car makes any difference. I did replace the diaphram in the wastegate as it had a couple of small perforations, and I did a vacuum check after it was together and it was fine.I also replaced the solenoid.
I'm wondering if there was a small leak in the COM line, would that cause these things to happen. After all, I have it plugged now for the wastegate to work right and it seems with it plugged, the wastegate shouldn't open at all. I also wonder if the unit in the car could send false signals. Any threads that show how to bench test these things?
Any advice would be appreaciated
I have a greddy T7833D turbo on a Greddy manifold with a Greddy wastegate. The wastegate is mounted upside down and discharges under the car. I have a Greddy Profec B spec II boost controller and that is where my problem is
As the directions read, I ran from the top of the wastegate (which is the bottom for me) to the COM port of the solenoid. Then I tapped a line into the IC piping very near the turbo and ran a line from there to the bottom of the wastegate (or the top for me, or it really should be called the side of the wastegate). Then I put a "T" in that line and ran it to the NC side of the solenoid.
If I do that, the waste gate opens at 10 PSI. If I pull the line off the COM port of the solenoid and plug it, it will do about 11.7 PSI. If I leave the com line plugged and move the NC line around to the COM port, It does 16 PSI, which is where it should be as I have the Wastegate adjustment run about 3/4 in and am using a 11-17 PSI spring.
Nothing I do with the unit inside the car makes any difference. I did replace the diaphram in the wastegate as it had a couple of small perforations, and I did a vacuum check after it was together and it was fine.I also replaced the solenoid.
I'm wondering if there was a small leak in the COM line, would that cause these things to happen. After all, I have it plugged now for the wastegate to work right and it seems with it plugged, the wastegate shouldn't open at all. I also wonder if the unit in the car could send false signals. Any threads that show how to bench test these things?
Any advice would be appreaciated