Upgrade your engine's performance with the Holden 186 ACL Race Series Main Bearings, specifically designed for high RPM conditions. These bearings are a top choice for enthusiasts and professionals seeking reliability and durability in their 4, 6, and 8 cylinder applications. Key features include:
High Strength Overlay Plate: Reduced thickness for enhanced performance.
Hardened Steel Backs: Ensures durability on all Conrod Bearings.
Increased Crush: Eliminates flash plating for a secure fit.
3/4 Grooving: Provides optimal oil supply to Main Bearings.
Consistent Wall Tolerances: Ensures precision and reliability.
Oversize Chamfers: Available where applicable for improved fit.
More Information
Product Name
Holden 186 ACL Race Series Main Bearings
Brands
ACL
Engine
Holden 186
Make
Holden
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
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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 Holden 186 ACL Race Series Main Bearings?
The Holden 186 ACL Race Series Main Bearings feature a high strength overlay plate for reduced thickness and enhanced performance, hardened steel backs for durability, increased crush for a secure fit, 3/4 grooving for optimal oil supply, consistent wall tolerances for precision, and oversize chamfers where applicable for improved fit.
What RPM range are these main bearings suitable for?
These main bearings are engineered for high-performance RPM conditions, making them suitable for applications where reliability and durability are critical at elevated RPMs. However, actual performance will depend on proper installation, machining, and tuning.
Do I need to perform any specific machining before installing these main bearings?
Yes, it is essential to ensure that the main bore is properly machined to the correct specifications before installation. This may include line boring or honing to achieve the necessary clearances for optimal performance.
Can these main bearings be used in both street and race applications?
While the Holden 186 ACL Race Series Main Bearings are designed primarily for high-performance and race applications, they can also be used in street engines if the engine is built to handle higher RPMs and loads. Always consider the overall engine build and intended use.
What oil clearance should I aim for when using these main bearings?
The oil clearance for these main bearings should be determined based on the engine builder's specifications and the intended application. It's crucial to measure and set the clearance accurately to ensure proper lubrication and performance.
