Forged Pistons for Acura/Honda, H22 (sleeved block only), 87mm, 11.5:1 (CP Pistons SC7131)
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|
Make |
Honda |
|
Model |
H22 (sleeved block only) |
|
Part Number |
SC7131 |
|
Cylinders |
4 |
|
Bore (in) |
3.425 |
|
Bore (mm) |
87 |
|
Size |
STD |
|
Stroke |
90.7 |
|
Conrod |
143.15 |
|
Comp Height (in) |
1.22 |
|
Comp Height (mm) |
31 |
|
Dom/Dish CC |
10.4 |
|
Compression Ratio |
11.5 |
|
Weight (Grams) |
351 |
|
Pin (mm) |
22 |
|
Rings |
CPN-3425 |
|
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, H22 (sleeved block only), 87mm, 11.5:1 (CP Pistons SC7131) |
|---|---|
| Brands | CP Carrillo |
| Engine | H22 |
| 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 are the recommended machining requirements for the SC7131 pistons?
When using the SC7131 pistons, ensure that the cylinder bore is properly honed to achieve the correct clearance. The recommended clearance for these pistons is typically between 0.0015" to 0.0025" depending on your application. Additionally, check the ring gap settings as they should be tailored to your specific engine build and intended use.
Can I use these pistons with a stock H22 block?
The SC7131 pistons are designed for use in a sleeved H22 block only. Using them in a stock block without sleeves may lead to reliability issues due to the increased compression ratio and potential for detonation.
What is the maximum RPM these pistons can safely handle?
While the SC7131 pistons are engineered for high performance, the maximum RPM they can handle will depend on your overall engine build, including components like the conrods and crankshaft. Typically, they are suitable for applications up to 8,000 RPM, but ensure that all components are balanced and properly matched to avoid failures.
What type of fuel is recommended for the SC7131 pistons?
For optimal performance with the SC7131 pistons, it is recommended to use high-octane fuel, ideally 98 RON or higher. This will help prevent knock and ensure that the engine operates efficiently at higher compression ratios.
Are there any specific installation tips for the SC7131 pistons?
When installing the SC7131 pistons, ensure that the wrist pins are properly lubricated and that the pin locks are securely fitted. It's also crucial to check that the pistons are oriented correctly in relation to the valve reliefs to avoid interference with the cylinder head.
