G Series: A Turn Ahead Of The Competition
G Series G57 turbochargers feature the latest innovations in turbocharger technology. Advanced compressor and turbine aero offer a range of high horsepower performance boosting solutions for 3.0L – 12.0L engine platforms. 88mm, 94mm, 98mm, 102mm, 106mm compressor inducer sizes produce up to 3000 horsepower for today’s top drag race teams. The newly engineered turbine wheel with optimized G Series aerodynamics increases flow up to 28%. The large 90 trim turbine stage measures 118mm at the inducer and 112mm at the exducer. One-piece aluminum center housing reduces supercore weight. The center housing is air cooled, features a 16mm dual ceramic ball bearing for premium rotor dynamics, and retains the oil inlet and outlet specifications from previous GTX designs.
Dual Ceramic Ball Bearing
An oil restrictor is recommended for optimal performance with ball bearing turbochargers.The G57 turbochargers utilize a massive 16mm dual ball bearing cartridge with steel cages. An oil pressure of 40 – 45 psi at maximum engine speed is recommended to prevent damage to the turbocharger’s internals. In order to achieve this pressure, a restrictor with a 0.040” orifice will normally suffice, but you should always verify the oil pressure entering the turbo after the restrictor in insure that the components are functioning properly. Recommended oil feed is -3AN or -4AN line or hose/tubing with a similar ID. As always, use an oil filter that meets or exceeds the OEM specifications.
Features:
- Supports up to 3000 horsepower
- 88mm, 94mm, 98mm, 102mm, 106mm compressor options
- 118mm inducer turbine wheel
- 28% more turbine flow (compared to GTX) see graph below
- One-piece aluminum center housing
- 16mm dual ceramic ball bearing cartridge
- Outline interchangeable with GTX Gen II turbos
- Stainless Steel turbine kit sold individually. 1.09 A/R, 1.25 A/R, 1.41 A/R