Nissan RB25 ACL Race Series Main Bearings
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Nissan RB25 ACL Race Series Main Bearings
Enhance your engine's performance with the Nissan RB25 ACL Race Series Main Bearings, meticulously engineered to endure higher RPM conditions. These bearings are a top choice for automotive enthusiasts seeking reliability and efficiency in their 4, 6, and 8-cylinder applications.
Key Features:
- High Strength Overlay Plate: Features a reduced thickness for superior durability.
- Hardened Steel Backs: All Conrod Bearings come with hardened steel backs for enhanced strength.
- Increased Crush: Designed to eliminate flash plating, ensuring a secure fit.
- 3/4 Grooving: Main Bearings include 3/4 grooving for optimal oil supply.
- Consistent Wall Tolerances: Ensures precision and reliability.
- Oversize Chamfers: Available where applicable for improved fitment.
| Product Name | Nissan RB25 ACL Race Series Main Bearings |
|---|---|
| Brands | ACL |
| Engine | RB25 |
| Make | Nissan |
Delivery & Freight
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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 Nissan RB25 ACL Race Series Main Bearings?
The Nissan RB25 ACL Race Series Main Bearings feature a high strength overlay plate with reduced thickness for durability, hardened steel backs for enhanced strength, increased crush to eliminate flash plating, and 3/4 grooving for optimal oil supply. They also ensure consistent wall tolerances and may include oversize chamfers for improved fitment.
What machining considerations should I keep in mind when using these main bearings?
When installing the RB25 ACL Race Series Main Bearings, ensure that the main journals are properly machined to the correct specifications. It's crucial to check for proper clearance and fitment, as well as to confirm that the main caps are aligned correctly. Line boring may be necessary after installation to ensure optimal performance.
Can these main bearings handle high RPM applications?
Yes, the Nissan RB25 ACL Race Series Main Bearings are specifically designed to endure higher RPM conditions, making them suitable for performance applications. However, reliability will depend on proper installation, machining, and overall engine tuning.
What is the recommended oil clearance for these main bearings in an RB25 engine?
The recommended oil clearance for the RB25 ACL Race Series Main Bearings can vary based on the specific application and engine build. Generally, a clearance of 0.0015" to 0.0025" is common for performance builds, but it's essential to consult with your engine builder to determine the best clearance for your setup.
Are these main bearings suitable for both street and race applications?
The Nissan RB25 ACL Race Series Main Bearings are designed primarily for race applications, providing enhanced durability and performance under high-stress conditions. While they can be used in street applications, ensure that your engine's setup and usage align with the demands of these high-performance bearings.
