Turbochargers need oil running through them constantly to run effectively, but in ball bearing turbos they need a lower flow of oil than journal bearing due to cartridge design. this is where oil restrictors come in. if you aren't using a restrictor and having oil leak through the seals, you need to install one before the seals leak more oil over time. The other benefit is improved boost response due to less windage of oil in the bearing. Oil pressure entering a ball bearing turbocharger needs to be between 40psi and 45psi at the maximum engine operating system. many engines are higher than this, so need to utilise one of our 0.035" restrictors. As most oil lines are AN4 we have this plate which utilises an AN4 feed whilst being able to be bolted to the turbo.
Billet aluminium oil restrictor flange suitable for these Turbos ;
Will fit Most T3, T4, T35, T40, T60, T67, T70, T76
- T6061 Billet Aluminum
- CNC Machined
- Center Hole threaded for AN4 fittings
- Includes M8 x 1.25 bolts, oil feed gasket, oil feed an4 restrictor flange
- Billet Aluminum Flanges Features a Thick Base that will not distort or Leak