Well, the problems of loosing all of my boost still exist...the wastegate is FUBAR. Anyhow, my friends and I conducted the test and suprising this old car holds boost damn well.
We found over 10 leaks, probably closer to 20. Most probs were from older vacuum lines that had formed to the nipples. The hoses would simply pop off when under boost and slide back on when the boost settled. 6psi seemed to be the major number where things went crazy. By far the worst leaks came from EMISSIONS! That little vacuum canister up front flaps like a an awning in a hurricane (cool noise though). Other emission parts leaked bad as well, including the gasketed piece near the intake.
After zip tying some tubes the car pulled a solid 25psi vaccum according to my gauge. Before the fixing it pulled 22-23. Emission will be going away shortly as well. BTW, we went up to 28psi for the test. Damn good job for an old car, these vg30's are impressive.
We found over 10 leaks, probably closer to 20. Most probs were from older vacuum lines that had formed to the nipples. The hoses would simply pop off when under boost and slide back on when the boost settled. 6psi seemed to be the major number where things went crazy. By far the worst leaks came from EMISSIONS! That little vacuum canister up front flaps like a an awning in a hurricane (cool noise though). Other emission parts leaked bad as well, including the gasketed piece near the intake.
After zip tying some tubes the car pulled a solid 25psi vaccum according to my gauge. Before the fixing it pulled 22-23. Emission will be going away shortly as well. BTW, we went up to 28psi for the test. Damn good job for an old car, these vg30's are impressive.
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