Garrett G57-3000 106mm Turbocharger
Features;
106mm compressor inducer
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
Up to 3000hp rated
 
G Series G57 turbochargers feature the latest developments in turbocharger technology. The superior compressor and turbine aero design, offer a range of high horsepower solutions for 20B & 26B engine combinations as used by the leading race teams in the world of rotary drag racing.
 
The newly engineered turbine wheel with optimized G Series aerodynamics increases flow up to 28% (Compared to GTX Gen II, see graph below). The large 90 trim turbine stage measures 118mm at the inducer and 112mm at the exducer. G57 is offered with three stainless steel V-band turbine housings in 1.09 A/R, 1.25 A/R, and 1.41 A/R.
 
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.
Garrett G57 compressor stages are offered in 88mm, 94mm, 98mm, 102mm, and 106mm inducer sizes each with their own horsepower ratings indicated in the model name.
 
Turbine Housings:
Stainless steel turbine housings
Short outlet (SFI certified not available)
(3) Turbine configurations: 1.09 A/R, 1.25 A/R, 1.41 A/R
V-band inlet: 4.25 inch (108mm) (same as GTX55)
V-band outlet: 5.15 inch (131mm) (same as GTX55)
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 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.
 
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