English Racing Underdrive Oil Pump Gear for 4G63/4G64 (OP-GEAR) *Backorder*
$179.99
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$179.99
Product Overview
This gear is specifically designed for DSM and Evo engine families from 1992 to 2006, including Eclipse GST/GSX, Talon TSi, Laser RS, and Galant VR4 models. It works in tandem with a balance shaft deletion and requires minor modifications to the front oil pump cover to ensure proper fit and function.
Key Features
- Designed for 4G63/4G64 engines including DSM and Evo models from 1992 to 2006
- Reduces oil pressure to protect engine components and prevent pump failure
- Operational at idle: 20 psi at 1100 rpm; max pressure under load remains under 90 psi
- Retards cam timing by approximately 2 degrees
- Requires balance shaft deletion for proper installation
- Front oil pump cover must be lightly modified to accommodate fitment
- Maintains original timing belt setup; idler reset required on tensioner
Specifications
| Part Number | ER-OP-GEAR |
|---|---|
| Engine Compatibility | 4G63/4G64 |
| Vehicle Models | Evolution I-IX, Eclipse GST/GSX, Talon TSi, Laser RS, Galant VR4 |
| Year Range | 1992–2006 |
| Oil Pressure at 1100 rpm | 20 psi |
| Maximum Oil Pressure | 90 psi |
| Cam Timing Retard | 2 degrees |
Applications
- Mitsubishi 4G63
- 1992-2006 Evolution I-IX
- 1990-1999 Eclipse GST/GSX
- 1990-1998 Talon TSi
- 1990-1994 Laser RS
- 1991-1992 Galant VR4
What's Included
- English Racing Underdrive Oil Pump Gear (OP-GEAR)