MITSUBISHI 4G63 4G63T 4G64 2V, ACL Race Series Main Bearings (5M1219H)
Enhance your engine's performance with the MITSUBISHI 4G63 4G63T 4G64 2V, ACL Race Series Main Bearings (5M1219H). Specifically engineered to endure higher RPM conditions, these bearings are a perfect fit for your high-performance needs. Ideal for 4, 6, and 8 cylinder applications, they offer superior durability and reliability.
High strength overlay plate with reduced thickness for enhanced durability
Hardened steel backs on all Conrod Bearings for increased strength
Increased crush and elimination of flash plating for better performance
3/4 grooving on Main Bearings ensures optimum oil supply
Tight, consistent wall tolerances for precision fit
Oversize chamfers where applicable for improved installation
More Information
Product Name
MITSUBISHI 4G63 4G63T 4G64 2V, ACL Race Series Main Bearings (5M1219H)
Brands
ACL
Engine
4G63
Make
Mitsubishi
Delivery & Freight
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Disclaimer:
Product images are for description purposes only. Actual product may vary.
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?
The ACL Race Series Main Bearings for the 4G63 feature a high strength overlay plate with reduced thickness for enhanced durability, hardened steel backs for increased strength, and 3/4 grooving to ensure optimum oil supply. These bearings are designed to withstand higher RPM conditions, making them suitable for high-performance applications.
Do I need to perform any machining before installing these main bearings?
Yes, it is essential to check the main journal sizes and ensure proper clearances before installation. Depending on the engine's condition, you may need to perform line boring or other machining processes to achieve the correct fit and tolerances.
What is the recommended oil clearance for these main bearings in a 4G63 engine?
The recommended oil clearance for ACL Race Series Main Bearings typically ranges from 0.0015" to 0.0025" depending on the application and intended use. It is crucial to consult with your engine builder to determine the best clearance for your specific setup.
Are these bearings suitable for both street and race applications?
While the ACL Race Series Main Bearings are engineered for high-performance and race applications, they can also be used in street applications if the engine is built to handle the increased demands. However, ensure that your overall engine setup, including tuning and oiling, is appropriate for the performance level you intend to achieve.
What should I consider regarding installation of these main bearings?
When installing the ACL Race Series Main Bearings, ensure that the bearing surfaces are clean and free of debris. Pay attention to the orientation of the bearings, and use the appropriate assembly lubricant. Following the manufacturer's guidelines for torque specifications on the main caps is also critical for ensuring proper function and longevity.
