GTX4709R GEN II Turbocharger 76MM
Horsepower: 825 - 1575
Displacement: 2.0L - 10.0L
Features
- GEN II COMPRESSOR WHEEL AERODYNAMICS
- 76mm compressor inducer | 109mm compressor exducer
- 93mm turbine inducer | 84mm turbine exducer
- 15% INCREASED FLOW
- LARGER .88 A/R COMPRESSOR HOUSING VOLUTE
- GTX4709R FEATURES A 109mm COMP EXDUCER ( + 1mm) AND HAS 39% LOWER INERTIA COMPARED TO GTX4708R
- SUPERCORE AND TURBINE HOUSING SOLD SEPARATELY
- COMPATIBLE WITH GT AND GTX TURBINE HOUSINGS
- 76MM SUPERCORE PART NUMBER: 851285-5011S
WARNING: Maximum allowable turbocharger speed is 102.5krpm. 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.
Learn More About Race Vehicle Setups
How To Select A Turbo Part 1
With over 35 Garrett turbos to choose, how do you select the right one? This provides some insight into the complicated process.
Best Of Both Worlds: Turbo LS Swapped S550 Mustang
Like it, or love it? Is this the baddest V8 turbocharged drift Mustang built to date? We think so. The 2015 S550 Ford Mustang body…
How To Select A Turbo Part 2: Calculations
Turbo any engine once you apply these calculations. Find the compressor that matches your inputs and you are on your way to turbocharging any engine
Diesel Tuning Tips From High Performance Academy
Ever wondered what’s different about tuning diesel engines? The team at HP Academy cover some of the basics in this diesel turbo tech writeup
Turbo Tech: Compound Turbo Systems
Compound turbo systems use different size turbos and operate in series where the first turbo feeds the second turbo boosted air and the effect is compounded
GTX4709R GEN II 76mm
Reference Data
The latest Garrett technologies featuring many advanced features.
| GTX4709R GEN II | Compressor | Turbine | ||||||
|---|---|---|---|---|---|---|---|---|
| HP: 825-1625 Disp: 2.0L-10.0L | Inducer | Exducer | Trim | A/R | Inducer | Exducer | Trim | |
| Supercore | PN | |||||||
| 851285-5011S | 76mm | 109mm | 49 | 0.88 | 93mm | 84mm | 82 | |
| 851285-5012S | 80mm | 109mm | 54 | 0.88 | 93mm | 84mm | 82 | |
| Turbine Kits: GTX47 | PN | A/R | Inlet | Outlet | Wastegate | Divided | ||
| Interchangeable with GT|GTX 4708 4709 4718 4720 Supercores |
761208-0009 | 0.96 | T6 | V-Band | Free Float | N | ||
| 761208-0010 | 1.08 | T6 | V-Band | Free Float | N | |||
| 761208-0011 | 1.23 | T6 | V-Band | Free Float | N | |||
| 761208-0012 | 1.39 | T6 | V-Band | Free Float | N | |||
GTX4709R GEN II 76mm
Download Section
The latest Garrett technologies featuring many advanced features.
GTX4709R GEN II 76mm
Compressor Map & Exhaust Flow Chart
The latest Garrett technologies featuring many advanced features.
Compressor Map
Exhaust Flow Chart
Gen II Compressor Wheel Dimensions and Aerodynamics
GTX4709R Available in 76mm and 80mm inducer diameters
- Comp exducer is now 109mm (+1mm vs Gen I)
- Gen II wheel produces 15% more air flow
- 39% lower inertia
Larger Comp Exducer on Gen II
.88 A/R Compressor Housing
Gen II features a larger .88 A/R (Gen I .69 A/R)
- This helps maximize the power capacity of the new compressor wheel.
- This is also the same compressor housing used on the GTX5533R (85mm and 88mm)
Larger Compressor Volute
.88 A/R Compressor Housing
Gen II features a larger .88 A/R compressor housing that will cause an increase in outline dimensions only on the cold side of the turbo.
- +6mm longer on the comp outlet Fig. A
- +10mm longer on the comp inlet Fig. B
- Comp outlet diameter 107mm (same)
- Not outline interchangeable with gen 1
Dimensional Compressor Measurements vs. Gen I
Additional Features
- Lightweight billet backplate
- (NEW) Backplate to compressor housing O-ring
- Speed sensor port compatible only with new flange style speed sensors: (pn 781328-0003 Street Kit | pn 781328-0004 Pro)
Compatible only with New G Series Speed Sensor
