SKU: 3091
GSC P-D Toyota 1JZ/2JZ Manganese Bronze Exhaust Valve Guide – Single
GSC Power-Division Manganese Bronze Exhaust Valve Guide part 3091 is a single precision component for Toyota 1JZ-GTE and 2JZ-GTE engines found in JDM performance vehicles like Chaser Mark II Supra and Aristo. This guide replaces stock cast iron with manganese bronze for better heat transfer and wear resistance during high boost and RPM operation. Ideal for engine rebuilds pushing higher power levels.
Key Features
- Manganese Bronze Material: Handles extreme exhaust heat and pressure with high thermal conductivity and anti-wear properties for long-term reliability
- Exact Stem Clearance: 0.0015 inch to 0.0022 inch tolerance promotes smooth valve action reduces friction and prevents premature failure
- Guide Dimensions: 1.496 inch length and 0.780 inch installed height ensure drop-in compatibility with factory heads
- Exhaust Valve Specific: Matches 1JZ-GTE and 2JZ-GTE exhaust stem diameter of 0.236 inch for secure fit in turbocharged setups
- Single Packaging: Allows targeted replacement in custom valvetrain assemblies without buying full sets
Product Notes
- Sold as one guide for individual cylinder service
- Ream to spec after press-in to achieve clearance
- Special order confirm stock before ordering
Installation Notes
- Professional installation recommended.
- Cylinder head off engine use valve guide driver tool for press fit.
- Works with OEM GSC or oversized exhaust valves same stem size.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1990-1995 | Toyota | Chaser | JZX90 Tourer V 1JZ-GTE |
| 1996-2001 | Toyota | Chaser | JZX100 1JZ-GTE |
| 1990-1996 | Toyota | Cresta | JZX90 Tourer V 1JZ-GTE |
| 1990-2001 | Toyota | Mark II | JZX90 JZX100 Tourer V 1JZ-GTE |
| 1998-2001 | Toyota | Progres | 1JZ-GTE |
| 1993-2002 | Toyota | Supra | JZA80 2JZ-GTE |
| 1991-2000 | Toyota | Soarer | UZZ30 2JZ-GTE |
| 1991-2005 | Lexus | Aristo | JZS147 JZS161 2JZ-GTE |
Why Choose GSC Power-Division?
- Valvetrain specialist for JDM engines with race-proven designs
- Made in USA with CNC machining for tight tolerances
- Supports 1000hp plus builds in drag and circuit racing
Frequently Asked Questions
- Q: Does this guide fit 2JZ-GTE Supra MK4?
A: Yes part 3091 fits 1993-2002 Toyota Supra JZA80 2JZ-GTE exhaust valves perfectly. - Q: Why manganese bronze over cast iron?
A: Manganese bronze resists galling better conducts heat faster and lasts longer under high exhaust gas temps in turbo engines. - Q: Can I install this myself?
A: Precision pressing and reaming needed professional machine shop advised for head work.
Shipping & Handling
- Method: UPS Ground USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Protective small box
- Weight: 0.1 lbs
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