Forged Pistons for BMW N20B20, 84mm, 9.4:1 or S55B30 9.7:1 or N55B30 10.2:1 (CP Pistons SC7702)
Forged Pistons for BMW N20B20, 84mm, 9.4:1 or S55B30 9.7:1 or N55B30 10.2:1 (CP Pistons SC7702)
|
Make |
BMW |
|
Model |
N20B20 9.4:1/N55B30 10.2:1/S55B30 9.7:1 |
|
Part Number |
SC7702 |
|
Cylinders |
4 or 6 |
|
Bore (in) |
3.307 |
|
Bore (mm) |
84 |
|
Size |
STD |
|
Stroke |
89.6 |
|
Conrod |
144.3 / 143.3 |
|
Comp Height (in) |
1.276 |
|
Comp Height (mm) |
32.4 |
|
Dom/Dish CC |
-13.93 |
|
Compression Ratio |
TBD |
|
Weight (Grams) |
342 |
|
Pin (mm) |
22 |
|
Rings |
CPT-3307PVD |
|
Ring Thickness |
1.2 x 1.2 x 2.0mm |
|
Pin included (Standard) |
866-2250-18CP1C |
|
Upgraded Pin |
866-2250-20CP3C |
|
Ultra Duty Pin |
866-2250-25CP3C |
|
Locks |
866x063 SWL |
CP pistons are compatible with oversized valves and high lift camshafts. CP Pistons represent the highest quality and is engineered for maximum power. Standard features include: Deep valve reliefs accommodate high lift camshafts; Larger valve reliefs for +1mm valve sizes; Custom skirt cam and barrel design; Accumulator grooves; High strength aluminum forgings; High performance rings; Fully CNC machined and balanced to +/- 1 gram; Wrist pins included at no additional cost; Double pin oilers force fed from oil ring groove; Pin lock grooves for easy lock removal; Pin fitting included.
Engine build fitment
N20|N55B30 - S55B30. Match the selected dimensions, engine generation and rotating assembly specification before machining or assembly.
Installation and BBT workshop support
Confirm finished bore size, piston-to-wall clearance, compression height, pin specification, ring gaps and valve clearance against the supplied piston documentation.
Built by Boost & Tune is an authorised Spool Imports dealer and can assist with component selection, engine assembly and tuning requirements for your build.