Mitsubishi 4G63 1997cc 4G64, ACL Race Series Main Bearings (5M1144H)
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Mitsubishi 4G63 1997cc 4G64, ACL Race Series Main Bearings (5M1144H)
Enhance your engine's performance with the Mitsubishi 4G63 1997cc 4G64, ACL Race Series Main Bearings (5M1144H). Specifically engineered to endure higher RPM conditions, these bearings are a top choice for racing enthusiasts and professional mechanics alike. Designed for popular 4, 6, and 8 cylinder applications, they offer superior durability and reliability.
- High strength overlay plate with reduced thickness for improved performance
- Hardened steel backs on all Conrod Bearings for added strength
- Increased crush and elimination of flash plating for better fit
- 3/4 grooving on Main Bearings ensures optimum oil supply
- Tight, consistent wall tolerances for precision
- Oversize chamfers where applicable for enhanced oil flow
| Product Name | Mitsubishi 4G63 1997cc 4G64, ACL Race Series Main Bearings (5M1144H) |
|---|---|
| Brands | ACL |
| Engine | 4G63 |
| Make | Mitsubishi |
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What information do I need to match these pistons to my engine?
You need the engine code, bore size, stroke, rod length, pin diameter and target compression ratio. These determine the correct piston compression height and crown design.
How should ring gaps be set for these pistons?
Ring gaps must be set by your engine builder based on fuel type, boost level and the intended rpm range. Forced-induction engines usually require larger gaps.
Are forged pistons suitable for street engines?
Yes. Forged pistons handle detonation and high cylinder pressure better than cast units. Your builder should set the piston-to-bore clearance to suit your application.
What are the key features of the ACL Race Series Main Bearings for the 4G63 engine?
The ACL Race Series Main Bearings for the 4G63 engine feature a high strength overlay plate with reduced thickness for improved performance, hardened steel backs for added strength, and increased crush to ensure a better fit. They also include 3/4 grooving to optimise oil supply and tight wall tolerances for precision.
Do I need to modify the engine block to fit these main bearings?
While the ACL Race Series Main Bearings are designed to fit the 4G63 engine, it's essential to check the block for any machining requirements such as line boring or ensuring proper surface finish. Always verify clearances and tolerances during installation.
What RPM range are these main bearings suitable for?
These main bearings are engineered for high RPM conditions, making them suitable for racing applications. However, the actual reliability and performance will depend on proper installation, machining, and overall engine setup.
Are these main bearings compatible with both 4G63 and 4G64 engines?
Yes, the ACL Race Series Main Bearings (5M1144H) are designed to be compatible with both the Mitsubishi 4G63 and 4G64 engines, providing enhanced performance for both applications.
What should I consider when installing these main bearings?
When installing the ACL Race Series Main Bearings, ensure that the engine block and caps are clean and free of debris. Verify that the bearing clearances are within specifications and follow the manufacturer's guidelines for installation to achieve optimal performance.
