Forged Pistons for Acura/Honda, 87mm, K20A/A2 12.5:1, or K24A 14.5:1 lightweight (CP (CP Pistons SC71422XA)
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|
Make |
Acura/Honda |
|
Model |
K20A/A2 |
|
Part Number |
SC71422XA |
|
Cylinders |
4 |
|
Bore (in) |
3.425 |
|
Bore (mm) |
87 |
|
Size |
+1.0mm |
|
Stroke |
86 |
|
Conrod |
139 |
|
Comp Height (in) |
1.181 |
|
Comp Height (mm) |
30 |
|
Dom/Dish CC |
11.6 |
|
Compression Ratio |
12.5 |
|
Weight (Grams) |
300 |
|
Pin (mm) |
22 |
|
Rings |
CPN-3425 |
|
Ring Thickness |
1.0 x 1.2 x 2.8mm |
|
Pin included (Standard) |
866-2000-15CP1C |
|
Upgraded Pin |
866-2000-17CP3C |
|
Ultra Duty Pin |
NA |
|
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.
| Product Name | Forged Pistons for Acura/Honda, 87mm, K20A/A2 12.5:1, or K24A 14.5:1 lightweight (CP (CP Pistons SC71422XA) |
|---|---|
| Brands | CP Carrillo |
| Engine | K20 |
| Make | Honda |
Delivery & Freight
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What information do I need to match these pistons to my engine?
You need the engine code, bore size, stroke, rod length, pin diameter and target compression ratio. These determine the correct piston compression height and crown design.
How should ring gaps be set for these pistons?
Ring gaps must be set by your engine builder based on fuel type, boost level and the intended rpm range. Forced-induction engines usually require larger gaps.
Are forged pistons suitable for street engines?
Yes. Forged pistons handle detonation and high cylinder pressure better than cast units. Your builder should set the piston-to-bore clearance to suit your application.
What compression ratio do these pistons provide for K20A and K24A engines?
The SC71422XA pistons provide a compression ratio of 12.5:1 for K20A/A2 engines and 14.5:1 for K24A engines. Ensure that your engine is properly tuned to handle this compression for optimal performance.
What is the recommended bore clearance for these pistons?
For the SC71422XA pistons, a typical bore clearance of 0.0015" to 0.0025" is recommended. However, final clearance should be determined by the engine builder based on specific application and tolerances.
Are these pistons compatible with high lift camshafts?
Yes, the SC71422XA pistons feature deep valve reliefs designed to accommodate high lift camshafts, making them suitable for performance applications that require increased airflow.
What type of wrist pins are included with these pistons?
The SC71422XA pistons come with standard wrist pins (866-2000-15CP1C) included at no additional cost. An upgraded pin option (866-2000-17CP3C) is also available for those seeking enhanced durability.
What machining considerations should I keep in mind when using these pistons?
When using SC71422XA pistons, ensure that the cylinder bore is properly honed to match the piston size, and check that the ring gaps are set according to your specific application. Balancing the crankshaft with the full rotating assembly is also crucial for optimal performance.
