had a Precision 5857 that had the center section leak oil into the turbine side...replaced the center section...leaked some more. warrentied it, sold it. also used the supplied oil restrictor.
Went to a Comp 6062 tripplex ball bearing. comp sales suggested a certain oil restrictor so it was purchased from comp once the car was getting close to being first fired. turbo has been great. wonderfully quick spooling turbo, pulls super hard....then kaboom under light boost in 2nd gear.
looks like bearing failure.... Comp has the turbo back and says there was oiling issues and no oil restrictor is needed? idle oil pressures are 25-30psi and in boost/high revs it peaks around 60-65psi.




Went to a Comp 6062 tripplex ball bearing. comp sales suggested a certain oil restrictor so it was purchased from comp once the car was getting close to being first fired. turbo has been great. wonderfully quick spooling turbo, pulls super hard....then kaboom under light boost in 2nd gear.

looks like bearing failure.... Comp has the turbo back and says there was oiling issues and no oil restrictor is needed? idle oil pressures are 25-30psi and in boost/high revs it peaks around 60-65psi.






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