Nissan RB25NEO Calico Coated ACL Race Series Main Bearings
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Calico Coated ACL Race Series Bearings
COATED BEARINGS Long term players in the performance engine bearing industry ACL RACE Series Performance Engine Bearings & Calico Coatings have formed a collaboration to offer users an additional option in performance engine building. ACL and Calico are, respectively, technological leaders in the fields of performance engine bearings and performance coatings. Both companies have exemplary reputations for quality, performance & knowledge in their areas of specialization. ACL engine bearings have been coated by Calico for individuals for over 15 years, with proven compatibility and an established track record of excellence in the most exacting and extreme performance applications. ACL and Calico both have rich histories in motorsport, the racetrack is the perfect proving ground. This alliance culminates in the release of ACL offering a range of Calico coated ACL RACE Series Performance Engine Bearings. The coated range is available through all current ACL distributors
DESCRIPTION Our coated bearings combine ACL’s tough RACE Series lining and overlay metallurgy with Calico’s well renowned CT-1 coating. CT-1 is a Dry Film Lubricant coating that helps reduce friction and abrasive wear. It provides intermittent dry lubrication and is not affected by dust or dirt. CT-1 is specifically engineered to withstand the extreme conditions of today’s high performance engines. Professional engine builders enjoy a higher level of confidence with increased embedability, strength and durability
ADVANTAGES Provides intermittent dry lubrication, not affected by dust or dirt, low coefficient of friction. Thin coating to accommodate assembly constraints, chemical resistance, corrosion protection, reduced friction and drag resulting in decreased parasitic losses. • Corrosion Protection • Increased Lubricity • Low Coefficient of Friction • Oil and Fuel Resistant
LOW OIL PRESSURE/OIL STARVATION Theoretically a crankshaft rides on a thin film of oil that protects both the crank and bearing. Real world experience such as cold starts and rough terrain conditions have proven otherwise. CT-1 coated engine bearings provide a dry film lubricant that protects against intermediate oil starvation.
| Product Name | Nissan RB25NEO Calico Coated ACL Race Series Main Bearings |
|---|---|
| Brands | ACL |
| Engine | RB25 NEO |
| 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 benefits of using Calico Coated ACL Race Series Main Bearings in my RB25 NEO engine?
The Calico Coated ACL Race Series Main Bearings provide enhanced durability and reduced friction due to the CT-1 dry film lubricant coating. This coating helps protect against abrasive wear and is designed to withstand the extreme conditions of high-performance engines, making it ideal for both track and street applications.
Do I need to modify my engine block to fit these main bearings?
Typically, these bearings are designed to fit the standard RB25 NEO main journal sizes. However, it's essential to check for any machining requirements or clearances specific to your engine build, as variations can occur depending on previous modifications or wear.
How do I ensure proper installation of the ACL Race Series Main Bearings?
For proper installation, ensure that the bearing surfaces are clean and free of debris. Follow the manufacturer's recommendations for torque specifications when installing the main caps, and verify that the oil clearance is within the acceptable range for your application.
Can these bearings handle low oil pressure conditions?
Yes, the CT-1 coating on these bearings provides a level of protection against low oil pressure and oil starvation conditions. The dry film lubricant helps maintain a protective layer even when oil supply is compromised, but it's still crucial to maintain proper oil levels and pressure during operation.
What type of oil should I use with these main bearings?
Using high-quality synthetic or semi-synthetic oil is recommended for optimal performance with these bearings. Ensure that the oil has the appropriate viscosity for your engine's operating conditions, and always follow the manufacturer's guidelines for oil selection.
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