Forged Pistons for Acura/Honda, 87mm, K20A 9.6:1 or K24A 10.9:1 ( (CP Pistons SC70457)
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|
Make |
Acura/Honda |
|
Model |
K20A/A2/A3 |
|
Part Number |
SC70457 |
|
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 |
-3.3 |
|
Compression Ratio |
9.6 FT |
|
Weight (Grams) |
323 |
|
Pin (mm) |
22 |
|
Rings |
CPN-3425 |
|
Ring Thickness |
1.0 x 1.2 x 2.8mm |
|
Pin included (Standard) |
866-2250-20CP1C |
|
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.
| Product Name | Forged Pistons for Acura/Honda, 87mm, K20A 9.6:1 or K24A 10.9:1 ( (CP Pistons SC70457) |
|---|---|
| Brands | CP Carrillo |
| Engine | K20 |
| Make | Honda |
Delivery & Freight
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Disclaimer:
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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 the K20A and K24A engines?
The SC70457 pistons provide a compression ratio of 9.6:1 for the K20A engine and 10.9:1 for the K24A engine. Ensure that your engine is built to handle the chosen compression ratio for optimal performance.
What are the recommended machining requirements for these pistons?
When installing the SC70457 pistons, ensure that the bore clearance is set correctly according to your engine's specifications. Additionally, check that the ring gaps are properly set for your specific application to prevent issues under high RPM and boost conditions.
Are these pistons compatible with high lift camshafts?
Yes, the SC70457 pistons feature deep valve reliefs that accommodate high lift camshafts, making them suitable for performance builds that require larger valve sizes and increased airflow.
What is the weight of the SC70457 pistons, and how does it affect performance?
Each SC70457 piston weighs 323 grams. The lightweight design contributes to reduced reciprocating mass, which can improve engine response and allow for higher RPM operation, provided that the rest of the engine components are also balanced accordingly.
What type of wrist pins are included with these pistons?
The SC70457 pistons come with standard wrist pins (part number 866-2250-20CP1C) included at no additional cost. Upgraded and ultra-duty pins are also available for those looking for enhanced durability in high-performance applications.
