Nissan SR20DET 1998cc DOHC, ACL Race Series Main Bearings (5M2975H)
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Nissan SR20DET 1998cc DOHC, ACL Race Series Main Bearings (5M2975H)
Enhance the performance of your Nissan SR20DET engine with the ACL Race Series Main Bearings, specifically engineered for high RPM conditions. These bearings are a top choice for automotive enthusiasts seeking reliability and durability in their engine components. Designed for 4, 6, and 8 cylinder applications, they offer superior features that ensure optimal engine performance.
- High Strength Overlay Plate: Reduced thickness for enhanced durability.
- Hardened Steel Backs: Provides robust support for all Conrod Bearings.
- Increased Crush: Eliminates flash plating for a perfect fit.
- 3/4 Grooving: Ensures optimum oil supply to Main Bearings.
- Tight Wall Tolerances: Guarantees consistent performance.
- Oversize Chamfers: Available where applicable for improved fitment.
| Product Name | Nissan SR20DET 1998cc DOHC, ACL Race Series Main Bearings (5M2975H) |
|---|---|
| Brands | ACL |
| Engine | SR20 |
| Make | Nissan |
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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 SR20DET?
The ACL Race Series Main Bearings for the SR20DET feature a high strength overlay plate for enhanced durability, hardened steel backs for robust support, and increased crush to eliminate flash plating. They also have 3/4 grooving for optimal oil supply, tight wall tolerances for consistent performance, and oversize chamfers where applicable for improved fitment.
What machining considerations should I keep in mind when using these main bearings?
When using ACL Race Series Main Bearings, ensure that the main journal surfaces are properly machined and within OEM specifications. It's crucial to check for proper clearance and fitment, as these bearings may require specific honing or line boring to achieve the desired tolerances for optimal performance.
Can I use these main bearings in a street application?
While the ACL Race Series Main Bearings are designed for high RPM and performance applications, they can be used in street engines if the engine is built for performance. However, ensure that the engine is properly tuned and that oil quality is maintained to ensure reliability.
How do I ensure proper oil supply to these main bearings?
To ensure proper oil supply to the ACL Race Series Main Bearings, make sure the oiling system is in good condition and that the oil pump is functioning correctly. The 3/4 grooving design of these bearings aids in oil distribution, but it's essential to maintain adequate oil pressure and use high-quality oil to prevent wear.
What is the expected lifespan of these main bearings under racing conditions?
The lifespan of ACL Race Series Main Bearings under racing conditions can vary based on factors such as engine tuning, oil quality, and operating temperatures. Regular inspection and maintenance are recommended, as well as ensuring proper clearances and lubrication to maximise their durability.
