Product Description
BMW S52 Forged Piston Set - Supertech P6-BM87-N25
BMW S52 Forged Piston Set - Supertech P6-BM87-N25
Supertech Pistons are manufactured from extruded high silicone, enhanced 4032 alloy (with additional Cu, Ni & Mg) that had low thermal expansion, excellent wear resistance and higher thermal conductivity. Supertech Pistons, with this alloy, have withstood up to 42psi of boost, with alcohol, without any problems.
A two or three step forging process yields a fine structural grain which are then submitted to several machining steps in state of the art CNC machines.
Several heat treatments provide the piston with high tensile strength and evenly distributed hardness.
Contact reduction grooves are standard, and pin bores are honed and reamed for precise fit. Wrist pins are constructed of cold extruded chrome moly steel for high strength and used with wire clip locks.
Finally, the pistons receive a 'phosphate dry lubricant' coating to protect the rings against 'micro-welding' and enhance lubrication on the skirt/cylinder area.
Compression ratios are computed with .030" head gasket and .010" deck unless indicated in each case.
Specs:
- Bore: 87mm[0.60mm Oversized]
- Comp Height: 1.220" (31mm)
- Comp Ratio: 8.5:1
- Dome/Dish Volume CCs: -25
- Pin Diameter: 22mm (.866")
- Pin Weight: 74grams
- Piston Weight: 306grams
- Rod Length: 5.315"
- Skirt Style: Round
- Stroke: 89.6mm
Vehcile Fitment:
1996-1999 BMW M3
Located in San Jose, California in the heart of Silicon Valley, Supertech was born from the same fertile ground as many other companies in this area utilizingcutting edge technology to fuel growth.
Supertech fuses this technology with passionate people and over 30 years of experience in creating the highest performance valves and valve train components available.
Supertech provides the racing market with superior valves and valve train components for virtually every type of racing. Whether it’s Drag Racing, Rally, Road Racing or any other type of motorsport, Supertech is sure to have the perfect performance solution for your application. If not, we are always willing to work with you to custom manufacture the solution that is just right for you.
