ACL Race Series Conrod Bearings for BMW S14 B20 B23 B25 Engines
Enhance the performance of your BMW S14 B20 B23 B25 engines with ACL Race Series Conrod Bearings (4B1568H), engineered to endure higher RPM conditions. These bearings are a top choice for automotive enthusiasts seeking reliability and performance in their 4, 6, and 8-cylinder applications.
High Strength Overlay Plate: Features a reduced thickness for improved durability.
Hardened Steel Backs: Provides robust support for all conrod bearings.
Increased Crush: Eliminates flash plating for a more secure fit.
3/4 Grooving: Main bearings are designed with 3/4 grooving to ensure optimal oil supply.
Consistent Wall Tolerances: Ensures precision and reliability.
Oversize Chamfers: Available where applicable for enhanced fitment.
More Information
Product Name
BMW S14 B20 B23 B25 ENGINES, ACL Race Series Conrod Bearings (4B1568H)
Brands
ACL
Engine
B20
Make
BMW
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 benefits of using ACL Race Series Conrod Bearings in my BMW S14 engine?
ACL Race Series Conrod Bearings are designed for high-performance applications, providing enhanced durability and reliability under higher RPM conditions. The high strength overlay plate and hardened steel backs ensure robust support, making them suitable for both street and race use.
Do I need to modify my engine for these conrod bearings?
While the ACL Race Series Conrod Bearings are designed to fit BMW S14 B20 B23 B25 engines, it's essential to check for proper clearances and fitment. Depending on your specific engine build, you may need to ensure that the conrod journals are properly machined to match the bearing specifications.
What should I consider for oil supply when using these bearings?
These bearings feature 3/4 grooving, which is designed to optimise oil supply to the conrods. Ensure that your oil system is functioning correctly and that you are using the appropriate oil viscosity for your application to maintain proper lubrication and prevent wear.
Are these bearings suitable for high horsepower applications?
Yes, ACL Race Series Conrod Bearings are engineered to handle higher horsepower and RPM levels, making them a suitable choice for performance builds. However, the overall reliability will depend on proper machining, clearances, and tuning of your engine.
What is the recommended installation procedure for these conrod bearings?
When installing ACL Race Series Conrod Bearings, ensure that the conrod and crankshaft surfaces are clean and free from debris. Follow the manufacturer's guidelines for torque specifications and consider using assembly lube to prevent dry starts. Always verify clearances with a micrometer or bore gauge before final assembly.
