Supertech Nissan CA18DET 84.5mm (+1.5) 30mm CH Flat Top 8.5:1 CR Piston - Set of 4 (Excl Rings)

If you're rebuilding the engine in your Nissan CA18DET, a solid set of pistons is crucial for performance and reliability. These Supertech pistons are built to handle the demands of a performance engine, offering a reliable foundation for your build. They feature a flat top design and come in a set of four, ready to be installed in your engine block. The 84.5mm bore size is a +1.5mm overbore from the stock dimension, which can help restore compression and power in an engine with worn cylinders or allow for a slight increase in displacement.

These pistons are forged from high-strength aluminum, a common material for performance pistons because it's lightweight yet durable enough for high-cylinder pressures. The 8.5:1 compression ratio is a moderate increase over stock, making them suitable for a wide range of tuning applications, from naturally aspirated builds to those using forced induction. The 30mm compression height is also a key measurement that ensures proper piston-to-valve clearance and deck height when used with appropriate connecting rods and crankshafts. It's important to note that these pistons are sold without piston rings, so you'll need to source those separately to complete the assembly.

When installing these pistons, ensure you have the correct connecting rods and crankshaft for your CA18DET build. Proper balancing of the rotating assembly is also recommended for smooth operation and longevity. Remember to consult your engine's service manual for specific installation procedures and torque specifications. These pistons are not CARB approved and cannot be shipped to California.