Garrett G38 Turbine Housing Kits
From $849.95
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Garrett
Garrett G-Series II G38-1000 62mm Turbocharger
$2,899.90
COMPRESSOR MAP EXHAUST FLOW CHART
TURBINE HOUSING
PRODUCT DETAILS
The G-Series II G38-1000 62mm is part of Garrett's G-Series II line, the second generation of the G-Series. Its revised compressor wheel flows up to 10 percent more air than the first-generation G-Series at peak pressure ratio and peak shaft speed, with better efficiency at high flow. To turn that extra flow into more power, the engine needs to be recalibrated.
Garrett rates the G-Series II G38-1000 62mm for 500 to 1,000 horsepower on 2.0 to 5.5 liter engines.
Key Specifications
- Series — G-Series II
- Frame size — 38 frame
- Horsepower rating — 500–1,000 hp (Garrett rating)
- Engine displacement — 2.0–5.5 L
- Compressor wheel — 62 mm inducer, 88 mm exducer
- Turbine wheel — 74 mm inducer, 66 mm exducer
- Maximum turbo speed — 125,000 rpm
- Supercore part number – V-Band Outlet — 938272-5003S
Turbine Housing Options
Each turbine housing is listed by A/R (area-to-radius ratio), inlet flange, outlet and wastegate type. "Internal" housings have a built-in wastegate; "External" housings are free-float designs that require an external wastegate.
| Garrett part number | A/R | Inlet | Outlet | Wastegate | Divided |
|---|---|---|---|---|---|
| 757707-0037 | 0.85 | V-Band | V-Band | External | No |
| 757707-0038 | 0.95 | V-Band | V-Band | External | No |
| 757707-0039 | 1.06 | V-Band | V-Band | External | No |
| 757707-0042 | 0.85 | T4 | V-Band | External | Yes |
| 757707-0043 | 0.95 | T4 | V-Band | External | Yes |
| 757707-0044 | 1.06 | T4 | V-Band | External | Yes |
Important Information
Garrett calculates its horsepower ratings from the compressor map choke flow, which represents the potential flywheel horsepower of the turbo. Actual results depend on the engine, supporting modifications and calibration.
Garrett sets the maximum allowable speed for this turbo at 125,000 rpm. Operating above that speed can damage the turbo and cause premature failure. A turbo speed sensor (sold separately) lets you monitor shaft speed.
For race vehicles only. Not for use on public roads.
Installation and Tuning Available at Race Protocol
Turbo system design, installation and dyno tuning are available in house. Call (724) 732-8948 to discuss your build.
