Forged Pistons for Acura/Honda, H22 (sleeved block only), 87.5mm, 9:1 (CP Pistons SC7031)
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|
Make |
Honda |
|
Model |
H22 (sleeved block only) |
|
Part Number |
SC7031 |
|
Cylinders |
4 |
|
Bore (in) |
3.445 |
|
Bore (mm) |
87.5 |
|
Size |
+0.5mm |
|
Stroke |
90.7 |
|
Conrod |
143.15 |
|
Comp Height (in) |
1.22 |
|
Comp Height (mm) |
31 |
|
Dom/Dish CC |
-7.7 |
|
Compression Ratio |
9 |
|
Weight (Grams) |
337 |
|
Pin (mm) |
22 |
|
Rings |
CPN-3445 |
|
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, H22 (sleeved block only), 87.5mm, 9:1 (CP Pistons SC7031) |
|---|---|
| Brands | CP Carrillo |
| Engine | H22 |
| Make | Honda |
Delivery & Freight
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If you are unsure, get in touch by emailing [email protected], messaging us on Facebook, or phoning us at +61 7 5645 1333 (8am to 2pm AET).
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 CP Pistons SC7031?
For the CP Pistons SC7031, ensure that the cylinder bore is correctly sized to 87.5mm with appropriate clearance. It's advisable to hone the cylinder walls to achieve the desired fit. Additionally, confirm that the piston ring gaps are set according to your specific application and boost levels.
Can I use these pistons with stock H22 rods?
Yes, the SC7031 pistons are designed to work with stock H22 rods, but ensure that the small-end of the rods is properly machined to fit the 22mm wrist pin. Always check for clearance with the crank and other components during assembly.
What compression ratio can I expect with the SC7031 pistons?
The SC7031 pistons provide a compression ratio of 9:1 when used in a sleeved H22 block. However, actual compression can vary based on factors such as head gasket thickness and combustion chamber volume, so it's essential to measure these accurately during your build.
Are there any specific applications where these pistons excel?
The SC7031 pistons are well-suited for high-performance applications, particularly in builds that utilise oversized valves and high lift camshafts. They are designed to handle increased power levels while maintaining reliability, making them ideal for both track and spirited street use.
What is the weight of the SC7031 pistons, and how does it affect performance?
The SC7031 pistons weigh 337 grams each. This weight is beneficial for reducing reciprocating mass, which can improve engine response and revving characteristics. However, ensure that your engine's rotating assembly is balanced to accommodate any changes in weight for optimal performance.
