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1.5 16v - L15A
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1.5 16v - L15A
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KING RACING bi-metal main bearings for the HONDA 1.5 i-VTEC L15A engine:
The bi-metal main bearing sets KING RACING for HONDA 1.5 i-VTEC L15A engines consist of 10 bearing shells.
Below (click on the image) you will find the bi-metal big end bearings for HONDA 1.5 i-VTEC L15A engines:
Technical specification 
The bi-metal offered by KING is an advanced metallurgical composite technology matched to the demands and constraints of main bearings. As with big end bearings, the aim is to provide the best possible answer in terms of wear resistance, heat dissipation and performance under dynamic loads and high temperatures. For the crankshaft, however, the requirements are slightly different because of the specific forces and the mechanical layout.
Base layer:
The base layer of the bearing shell is often made of bronze or a copper-based alloy, chosen for its mechanical properties and its ability to withstand wear. Bronze also offers good thermal conductivity, which allows efficient dissipation of the heat generated by friction.
Intermediate layer (where fitted):
Some KING main bearings may include an intermediate layer of metal, often tin alloy or sometimes other specific alloys. This intermediate layer is designed to improve lubrication behaviour by reducing direct friction between the metal surfaces of the bearing shell and the crankshaft.
Surface layer:
The surface layer (the one in direct contact with the crankshaft) is often made of a soft metal such as tin or an alloy of tin and silver. This layer is essential to keep a stable oil film, which is critical in order to reduce wear and friction between crankshaft and bearing shell. It also protects against corrosion and against the seizure phenomena that can damage the engine in the long run.
Durability and wear resistance:
The KING bi-metal is designed to deliver maximum wear resistance, even under extreme load and temperature conditions. The combination of materials extends the service life of the bearing shells while reducing wear on engine components.
Lower friction:
The bi-metal considerably reduces friction between crankshaft and bearing shell. This improves overall engine efficiency by cutting friction losses and minimising the risk of overheating.
Improved thermal management:
One of the main jobs of the main bearings is to dissipate the heat generated by friction. The alloys used in the KING bi-metal allow efficient heat dissipation, which is critical in order to keep the engine thermally stable and to avoid premature engine failure caused by excessive temperature.
Optimal lubrication:
The surface alloy (often tin-based) is designed to promote good retention of the lubricating oil, which reduces the risk of dry friction, especially under severe operating conditions.
High engine speed and high load performance:
These bearing shells are particularly suited to high performance engines (race engines, modified engines, competition engines), where the stresses on the crankshaft can be extreme in terms of speed and load. The KING bi-metal keeps performance stable even in these extreme environments.
The KING bi-metal main bearings are used in various types of high performance engine, including those of race cars, competition engines and high output engines, as well as modified or performance engines built for motorsport and mechanical applications.
The KING bi-metal for main bearings is a high performance material, specifically designed to maximise durability, reduce friction and improve thermal management in engines exposed to severe conditions. By combining the benefits of several materials in a bi-metal structure, KING offers main bearings able to take extreme loads and temperatures while optimising engine performance and reliability.
