ALFA 1570 1779 1962, ACL Race Series Main Bearings (5M1112H)
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ACL Race Series Main Bearings (5M1112H) for ALFA 1570 1779 1962
Enhance your engine's performance with the ACL Race Series Main Bearings, specifically designed for ALFA 1570 1779 1962 models. These bearings are engineered to endure higher RPM conditions, making them ideal for racing and high-performance applications. Suitable for 4, 6, and 8 cylinder engines, they offer superior durability and reliability.
- High Strength Overlay Plate: Features a reduced thickness for enhanced performance.
- Hardened Steel Backs: Provides robust support for all Conrod Bearings.
- Increased Crush: Eliminates flash plating for a more secure fit.
- 3/4 Grooving: Ensures optimal oil supply to the Main Bearings.
- Consistent Wall Tolerances: Guarantees precision and reliability.
- Oversize Chamfers: Available where applicable for improved fitment.
| Product Name | ALFA 1570 1779 1962, ACL Race Series Main Bearings (5M1112H) |
|---|---|
| Brands | ACL |
| Engine | 1570cc, 1779cc, 1962cc, 1995cc Alfetta, Giulia, Giuletta, Spider, GT, 155, 164 |
| Make | Alfa |
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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 recommended clearances for the ACL Race Series Main Bearings in my Alfa engine?
The recommended clearances for ACL Race Series Main Bearings depend on the specific engine build and intended use. For high-performance applications, aim for tighter clearances, typically around 0.0015" to 0.0025". However, always consult your engine builder for precise specifications based on your setup.
Do I need to modify my engine block to fit the ACL Race Series Main Bearings?
In most cases, the ACL Race Series Main Bearings should fit without modification. However, ensure that your engine block is in good condition and that the main bore is properly machined. It's advisable to check for any irregularities or wear that might require attention before installation.
How should I prepare the engine block before installing these main bearings?
Before installing the ACL Race Series Main Bearings, clean the engine block thoroughly to remove any debris or old oil. Ensure the main bearing journals are polished and free from scratches. It's also important to check the surface finish and dimensions to ensure compatibility with the bearings.
Can I use these main bearings in a street application?
While the ACL Race Series Main Bearings are designed for high-performance and racing applications, they can be used in street applications if the engine is built for performance. However, be mindful of the potential for increased wear and oil temperature under normal driving conditions.
What type of oil should I use with ACL Race Series Main Bearings?
For optimal performance with ACL Race Series Main Bearings, use a high-quality synthetic or semi-synthetic oil that meets the specifications for your Alfa engine. Ensure the oil has adequate viscosity for your operating conditions, especially if you are running at higher RPMs.