| Then my friend who modifies Supras at his shop told me that BB turbos require very little oil compared to journal bearings. I added a .051 restrictor and the leak stopped. Turbos are still fine . The Garrett website recommends minimum of .040 oil restrictor. "Ball-bearing turbochargers can benefit from the addition of an oil restrictor, as most engines deliver more pressure than a ball bearing turbo requires. The benefit is seen in improved boost response due to less windage of oil in the bearing. In addition, lower oil flow further reduces the risk of oil leakage compared to journal-bearing turbochargers. Oil pressure entering a ball-bearing turbocharger needs to be between 40 psi and 45 psi at the maximum engine operating speed. For many common passenger vehicle engines, this generally translates into a restrictor with a minimum of 0.040" diameter orifice upstream of the oil inlet on the turbocharger center section. Again, it is imperative that the restrictor be sized according to the oil pressure characteristics of the engine to which the turbo is attached. Always verify that the appropriate oil pressure is reaching the turbo. "
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"Carrying a gun is like having a second cock. If your other cock could kill someone. " - Movie Superbad. "You are all about to get f*cked by the long d*ck of the law" - Superbad "It's better to be dead and cool than alive and uncool"
Don Johnson in -Harley Davidson and the Marlboro Man "Yes, I know more then JWT. Someone has to be the top dog, and it just so happens it's me." Nixit
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