Garrett G-Series G55-1850 85MM Turbo

The Garrett G-Series G55-1850 is designed for 3.0L-12.0L engines. As the name suggests, this turbocharger is capable of supporting 1850 BHP. Featuring the latest in turbocharger aerodynamics, these turbos provide legendary performance and reliability for your vehicle. Call our Turbo Experts for help deciding which turbocharger is right for you.

G Series turbochargers feature the latest innovations in turbocharger technology. Advanced compressor and turbine aero offer enthusiasts a wide range of performance boosting solutions for 2.0L - 12.0L engine platforms. Available in a variety of turbine housing options, it’s easy to select the right turbocharger for your application. To make choosing the right turbo easier, the G Series naming convention includes the maximum rated horsepower. For example a Garrett G37-900 is rated at 900 BHP.

• Ultra High Flow G-Series Turbine Wheel
• Advanced aerodynamics G Series Compressor Wheel
• Fully machined speed sensor and pressure ports
• Oil restrictor and water fittings included with purchase
• One piece center housing and backplate for increased durability
• Compact Standard Package
• Four water jacket ports for customizable installation
• Ball Bearing CHRA Rotating Assembly
• Standard & Reverse rotation (spins counterclockwise) options available
• Mar-M turbine wheel material rated up to 1050° C | 1922° F
• Stainless steel turbine housings for temperatures up to 1050° C | 1922° F
• +20% More Horsepower & Quicker Spool over comparable competitive turbochargers.

Featuring the latest advanced ultra high flow aerodynamic designs with the Garrett G Series Turbine Wheel, the G Series models offer previously unobtainable improvements in spool and power levels by frame sizeThe G-Series Turbine wheel is constructed of Mar-M super alloy material. This material is designed to withstand up to 1050° C - that’s 200 degrees more than inconel turbine wheels! The newly engineered turbine wheel with optimized G Series aerodynamics increases flow up to 15% (Compared to GTX Gen II, see graph below). The large 90 trim turbine stage measures 112mm at the inducer and 106mm at the exducer.

An oil restrictor is recommended for optimal performance with ball bearing turbochargers. The G55 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 to ensure 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.

Computer designed and fully CNC machined, the forged G Series compressor wheel and new aerodynamics design increases maximum horsepower output up to +30%. The new aero design increases peak flow and offers higher power levels within a large operating RPM range. garrett G55 compressor stages are offered in 85m, 88mm, 91mm, 94mm, 98mm, 102mm, and 106mm inducer sizes each with their own horsepower ratings indicated in the model name.

G Series turbine housings feature standard Garrett stainless steel material. The V-band CHRA to Turbine Housing interface offers a full 360 degree rotation. G55 is offered with stainless steel turbine housings in:

V-Band Inlet: 1.24 A/R, 1.40 A/R

T6 Inlet: 1.00 A/R, 1.12 A/R, and 1.24 A/R, 1.40 A/R

Short outlet (SFI certified not available)

V-band inlet: 4.25 inch (108mm) (same as GTX55)

V-band outlet: 5.15 inch (131mm) (same as GTX55)

Part Numbers:

1.24 A/R: 761208-0069 (V-band inlet & Outlet)

1.40 A/R: 761208-0070 (V-band inlet & Outlet)

1.00 A/R: 761208-0071 (T6 inlet & V-Band Outlet)

1.12 A/R: 761208-0072 (T6 inlet & V-Band Outlet)

1.24 A/R: 761208-0073 (T6 inlet & V-Band Outlet)

1.40 A/R: 761208-0074 (T6 inlet & V-Band Outlet)

Looking for a way to protect your turbo or exhaust manifold and improve its efficiency at the same time? Our in-house ceramic exhaust coating does both! Available in black or silver, these 2000+ degree ceramic coatings look great and provide an extra layer of protection against corrosion. By coating the exterior surfaces of your turbo hot side or manifold you retain the heat and energy in the exhaust, not in your engine bay. Improving under-hood temps and increasing efficiency with improved turbo spool are great reasons to add these coatings. Please note that ceramic coating is completed in-house and will add an additional lead time of 1-2 weeks to your order.

Looking to ensure you get the perfect turbo for your unique application the first time? Full-Race is here to help. Our customized turbo matching and system integration services use accurate operating parameter plotting to eliminate guesswork and trial and error. As turbocharging continues to grow globally, our unwavering commitment to high standards ensures unrivaled quality, reliability, and performance. Email us at gofaster@full-race.com or call us at (602) 437-2101 to find out how we can help you achieve your goals.

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