Forged Pistons for Acura/Honda, K20A/A2, 86mm, 12.5:1 (CP Pistons SC7142XA)
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|
Make |
Acura/Honda |
|
Model |
K20A/A2 |
|
Part Number |
SC7142XA |
|
Cylinders |
4 |
|
Bore (in) |
3.386 |
|
Bore (mm) |
86 |
|
Size |
STD |
|
Stroke |
86 |
|
Conrod |
139 |
|
Comp Height (in) |
1.181 |
|
Comp Height (mm) |
30 |
|
Dom/Dish CC |
12.6 |
|
Compression Ratio |
12.5 |
|
Weight (Grams) |
292 |
|
Pin (mm) |
22 |
|
Rings |
CPN-3386 |
|
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, K20A/A2, 86mm, 12.5:1 (CP Pistons SC7142XA) |
|---|---|
| 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 is the recommended compression ratio for the SC7142XA pistons?
The SC7142XA pistons have a compression ratio of 12.5:1, making them suitable for high-performance applications. Ensure that your engine is built to handle this compression level with appropriate fuel quality and tuning.
What are the specific machining requirements for the SC7142XA pistons?
When installing SC7142XA pistons, ensure that the bore clearance is set correctly according to your engine's specifications. Additionally, verify that the ring gaps are properly adjusted for optimal performance and reliability.
Can the SC7142XA pistons accommodate high lift camshafts?
Yes, the SC7142XA pistons feature deep valve reliefs designed to accommodate high lift camshafts and oversized valves, making them ideal for performance builds that require enhanced airflow.
What is the weight of the SC7142XA pistons and how does it affect engine performance?
The SC7142XA pistons weigh 292 grams each. This lightweight design contributes to reduced reciprocating mass, which can improve engine response and overall performance, especially at higher RPMs.
What type of wrist pins are included with the SC7142XA pistons?
The SC7142XA pistons come with standard wrist pins (part number 866-2000-15CP1C) included at no additional cost. These pins are designed to provide a secure fit and reliable performance in high-stress applications.
