Forged Pistons for Acura/Honda, 87.5mm, K20A/A2 11.2:1, or K24A 12.5:1 (No K20A3 head) (CP (CP Pistons SC71471XA)
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|
Make |
Acura/Honda |
|
Model |
K24 w/K20A/A2 |
|
Part Number |
SC71471XA |
|
Cylinders |
4 |
|
Bore (in) |
3.445 |
|
Bore (mm) |
87.5 |
|
Size |
+0.5mm |
|
Stroke |
99 |
|
Conrod |
152 |
|
Comp Height (in) |
1.181 |
|
Comp Height (mm) |
30 |
|
Dom/Dish CC |
4.6 |
|
Compression Ratio |
12.5 |
|
Weight (Grams) |
316 |
|
Pin (mm) |
22 |
|
Rings |
CPN-3445 |
|
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, 87.5mm, K20A/A2 11.2:1, or K24A 12.5:1 (No K20A3 head) (CP (CP Pistons SC71471XA) |
|---|---|
| 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 K24A engines?
The SC71471XA pistons provide a compression ratio of 12.5:1 when used in K24A engines. This higher compression is suitable for performance applications but requires careful tuning and fuel quality to ensure reliability.
Are these pistons compatible with K20A3 heads?
No, these pistons are not compatible with K20A3 heads. They are specifically designed for K20A/A2 and K24A applications, so ensure you are using the correct head for optimal performance.
What is the recommended bore clearance for these pistons?
The recommended bore clearance for the SC71471XA pistons should be determined by the engine builder based on the specific application and intended use. Generally, a clearance of 0.0015” to 0.0025” is common for performance applications, but always verify with your machining specifications.
What type of wrist pins are included with these pistons?
The SC71471XA pistons come with standard wrist pins (part number 866-2000-15CP1C) included at no additional cost. If you require upgraded pins, you can opt for the upgraded pin option (part number 866-2000-17CP3C).
Do these pistons require any special machining?
Yes, these pistons may require specific machining for optimal fitment, including checking bore size and ensuring proper ring gap settings. Always consult with your engine builder for precise machining requirements to achieve the best performance.
