CP Piston & Ring Set for Acura B18 Block - Bore (83.0mm) - Size (+2.0mm) - CR (10.0) - Set of 4

This is a set of four forged pistons and rings from CP Pistons, designed for Acura B18 engines. You get the pistons themselves, along with the necessary rings to complete the assembly for your engine build. These are a +2.0mm oversize set, meaning they are intended for blocks that have already been bored out to 83.0mm, which is 2.0mm larger than the stock bore size. The compression ratio achieved with these pistons is 10.0:1, a common target for naturally aspirated or mild forced induction builds.

CP Pistons are well-known in the performance engine building community for their robust construction. These are forged from high-strength aluminum alloy, which is much stronger and more durable than cast aluminum. This strength is crucial for handling the increased cylinder pressures found in performance applications, whether you're building a naturally aspirated screamer or adding a turbo or supercharger. The 83.0mm bore size and 10.0:1 compression ratio are specific targets for certain B18 engine builds, often aiming for a balance of power and reliability. The included rings are designed to seal against the cylinder wall and the piston, ensuring proper compression and oil control.

When installing these pistons, ensure your engine block has been professionally machined to the correct 83.0mm bore size and properly honed for ring seal. It's also important to verify that all other engine components, such as crankshaft, connecting rods, and bearings, are within specification and compatible with this piston set. Remember that this part is not CARB approved and cannot be shipped to California.