Features
• New compressor aero technology increases power and performance.
• Direct upgrade path for Gen I customers with just a CHRA purchase.
• G-Series II utilizes Gen I compressor and turbine housings.
• Up to 10% higher compressor flow compared to G-Series Gen I at peak pressure ratio and peak turbo RPM.
• Calibration required to take advantage of increased flow for a horsepower upgrade.
• Increased efficiency at high flow rates.
• Standard and reverse rotation configurations in Supercore, CHRA, and Turbo models.
• Mar-M alloy turbine wheel rated up to 1050° C.
• Stainless steel turbine housings are rated up to 1050° C.
• Oil restrictor and water fittings included.
WARNING: Maximum allowable turbocharger speed is 160krpm. The use of this product above max turbocharger speed is at the owner’s risk, and can result in damage and premature failure. To protect the turbocharger from overspeed when operating, a speed sensor can be installed into the compressor housing to monitor shaft speed. Sensors sold separately. (click here for details)
Performance results of this product are highly dependent upon your vehicle’s modifications and tuning/calibration. The horsepower numbers represented above are calculated based strictly on choke flow of the compressor map (total turbo capability), which represents the potential flywheel horsepower.
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IMPORTANT PRODUCT INFORMATION
“Garrett Performance Kits are professional aftermarket products only designed for certain racing vehicles driven on particular racing tracks and shall only be used on racing vehicles that will never be driven on public roads or highways. Garrett Performance Kits are not legal for the use in vehicles on public roads or other roads to which public road law applies. Any vehicle modifications using Garrett Performance Kits are AT YOUR OWN RESPONSIBILITY and AT YOUR OWN RISK. Only use Garrett Performance Kits in compliance with all applicable laws, regulations, and ordinances (including but not limited to emission, noise, operating license, performance, safety, and type-approval aspects). A vehicle modification using Garrett Performance Kits may particularly affect or void a vehicle’s warranty, operating license or type-approval. Moreover, only use Garrett Performance Kits in compliance with all applicable racing and racing track provisions. It is YOUR OWN RESPONSIBILITY AND RISK to ensure that your Garrett Performance Kit fits your vehicle and area of application. YOU MUST ENSURE LAWFUL AND SAFE OPERATIONS AT ANY TIME. You should particularly consult the owner’s manual and service manual of your vehicle. You should also contact your vehicle’s manufacturer to determine what effects modifications may have on important aspects such as safety, warranty, performance, etc. Only install and use Garrett Performance Kits if you have fully read and understood this important safety information and if you fully agree with the terms and conditions set forth therein.”
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Garrett Performance Intercoolers
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G-Series II G30-725 54mm
Reference Data
G-Series II G30-725 54mm
Compressor Map & Exhaust Flow Chart
Compressor Map
Exhaust Flow Chart
Harness the Power of Legends and Experience the Durability of Champions
Whether you’re a kit maker or an owner of a high-performance vehicle, now you can harness the power of motorsport legends and experience the durability of champions in your car with the NEW G-Series II universal Performance Turbos line from Garrett. Designed with the same quality and craftmanship that has
powered motorsport legends for over 4 decades. G-Series II turbochargers are available in multiple frame sizes to suit your individual needs, whether as a
complete new turbo or as a CHRA swap to upgrade your G-Series I Turbo.
Compressor Aero
• New compressor aero technology increases power and performance.
• Up to 10% higher compressor flow compared to G-Series Gen I at peak pressure ratio and peak turbo RPM.
• See the compressor map overlay for performance comparison.
• Calibration required to take advantage of increased flow for a horsepower upgrade.
• Increased efficiency at high flow rates.
Garrett, a History of Powering Motorsport Legends
For over 40 years, Garrett has been the name behind the legends of motorsport, powering the winners of the most prestigious races, including the Le Mans champions of the last 25 years. Our turbochargers are engineered by a team of 1300 engineers and tested across five R&D centers around the world, to deliver unmatched performance and reliability.
Compressor Housing Compatibility
G-Series II is a direct upgrade path for Gen I customers with just a CHRA purchase because the compressor housings have the same contour. This allows existing Gen I customers to use their compressor cover when upgrading.
A one-piece center housing and backplate increase durability and product safety by reducing the number of failure points associated with the turbocharger. The center housing to turbine housing V-Band connection allows for 360 degree orientation when installing with Garrett non-wastegated turbine housings.
Rotating Group- twin piston rings
A shorter bearing cartridge allows us to incorporate twin piston rings on both sides of the shaft wheel assembly. This will reduce the likeliness of oil leakage at the seals from the center housing to the compressor and or turbine stage.
Turbine Wheel Aero
The turbine wheel features all new aerodynamics to improve flow and boost response. The new turbine wheel is made of Mar-M super alloy and is capable of handling exhaust gas temperatures up to 1050 degrees C.
The new turbine wheel flows 15-20% more than GTX and has peak efficiency of 74%.
Turbine Housings
G-Series II and G-Series use the same turbine housings. Turbine housings are made from stainless steel to provide ultimate durability and temperature resistance up 1050 degrees C. Internally wastegated housings are compact, efficient, and designed with maximum bypass port size to reduce boost creep and provide better boost control. Turbine housings are available in a variety of wastegated and non-wastegated, open volute, T25 and V-Band configurations so be sure to order the correct part for your application.
