Forged Pistons for Acura/Honda, 89mm, K20A/A2 11.5:1 or K24A 13.3:1 (No K20A3 head) (CP (CP Pistons SC71404)
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|
Make |
Acura/Honda |
|
Model |
K20A/A2 |
|
Part Number |
SC71404 |
|
Cylinders |
4 |
|
Bore (in) |
3.504 |
|
Bore (mm) |
89 |
|
Size |
+3.0mm |
|
Stroke |
86 |
|
Conrod |
139 |
|
Comp Height (in) |
1.181 |
|
Comp Height (mm) |
30 |
|
Dom/Dish CC |
5.5 |
|
Compression Ratio |
11.5 |
|
Weight (Grams) |
359 |
|
Pin (mm) |
22 |
|
Rings |
CPN-3504 |
|
Ring Thickness |
1.0 x 1.2 x 2.8mm |
|
Pin included (Standard) |
866-2250-15CP1C |
|
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, 89mm, K20A/A2 11.5:1 or K24A 13.3:1 (No K20A3 head) (CP (CP Pistons SC71404) |
|---|---|
| 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 SC71404 pistons offer a compression ratio of 11.5:1 for the K20A/A2 and 13.3:1 for the K24A. Ensure that your engine's setup, including fuel quality and tuning, can handle these ratios for optimal performance.
What machining is required for these pistons to fit correctly?
These pistons typically require proper bore clearance to be set by the engine builder. It's crucial to check the bore size and ensure the pistons are fitted correctly to avoid issues such as piston slap or excessive wear.
Can I use these pistons with a K20A3 head?
No, these pistons are not compatible with the K20A3 head. They are specifically designed for the K20A/A2 and K24A engines, so ensure you have the correct head for optimal performance.
What is the weight of these pistons and how does it affect performance?
Each piston weighs 359 grams. Lighter pistons can improve engine response and reduce rotational mass, but it's essential to balance them with the full rotating assembly to maintain reliability and performance.
What type of wrist pins are included with these pistons?
The SC71404 pistons come with standard wrist pins (866-2250-15CP1C) included at no additional cost. Upgraded and ultra-duty pins are available for those looking for enhanced performance and durability.
