Description
Features
- GEN II COMPRESSOR WHEEL AERODYNAMICS
- 80mm 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
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.
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.
| GTX4709R GEN II | Reference Data | Compressor | Turbine | ||||||
|---|---|---|---|---|---|---|---|---|
| Supercore PN | Replaces | Inducer | Exducer | Trim | A/R | Inducer | Exducer | Trim |
| 851285-5011S | NEW | 76mm | 109mm | 49 | 0.88 | 93mm | 84mm | 82 |
| 851285-5012S | NEW | 80mm | 109mm | 54 | 0.88 | 93mm | 84mm | 82 |
The latest Garrett technologies featuring many advanced features.
COMPRESSOR MAP
EXHAUST FLOW CHART
Gen II Compressor Wheel Dimensions and Aerodynamics
GTX4709RAvailable 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
.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
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