Forged Pistons for Honda, F20C, 87.5mm, CH 1.181, 11:1 or F22C, 11.8:1 (CP Pistons SC7161)
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|
Make |
Honda |
|
Model |
F20C |
|
Part Number |
SC7161 |
|
Cylinders |
4 |
|
Bore (in) |
3.445 |
|
Bore (mm) |
87.5 |
|
Size |
+0.5mm |
|
Stroke |
84 |
|
Conrod |
153 |
|
Comp Height (in) |
1.181 |
|
Comp Height (mm) |
30 |
|
Dom/Dish CC |
2.1 |
|
Compression Ratio |
11 |
|
Weight (Grams) |
340 |
|
Pin (mm) |
23 |
|
Rings |
CPN-3445 |
|
Ring Thickness |
1.0 x 1.2 x 2.8mm |
|
Pin included (Standard) |
905-2250-15CP1C |
|
Upgraded Pin |
905-2250-19CP3C |
|
Ultra Duty Pin |
905-2250-26CP3C |
|
Locks |
905x073 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 Honda, F20C, 87.5mm, CH 1.181, 11:1 or F22C, 11.8:1 (CP Pistons SC7161) |
|---|---|
| Brands | CP Carrillo |
| Engine | F20, F22 |
| 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 the SC7161 pistons provide for the F20C and F22C engines?
The SC7161 pistons offer a compression ratio of 11:1 for the F20C engine and 11.8:1 for the F22C engine. Ensure that your engine is properly tuned to accommodate these compression ratios for optimal performance.
What is the recommended bore clearance for the SC7161 pistons?
The recommended bore clearance for the SC7161 pistons should be determined by the engine builder based on the specific application. Generally, a clearance of 0.0015" to 0.0025" is typical for performance applications, but always verify with your machining standards.
Do the SC7161 pistons come with wrist pins, and what are the options for upgrades?
Yes, the SC7161 pistons include standard wrist pins at no additional cost. Upgraded wrist pins are available, including the 905-2250-19CP3C for enhanced durability and the ultra-duty 905-2250-26CP3C for extreme applications.
What type of ring set is compatible with the SC7161 pistons?
The SC7161 pistons are compatible with CP rings, specifically the CPN-3445 ring set. Ensure that the ring gaps are set correctly based on your engine's specifications and intended use.
What machining considerations should be taken into account when using SC7161 pistons?
When using SC7161 pistons, it's essential to ensure that the cylinder bores are honed to the correct size and that the piston-to-wall clearance is set appropriately. Additionally, check that the piston ring grooves are machined to the correct specifications for optimal sealing and performance.
