Forged Pistons for Acura/Honda, B16A, 85mm, 11.3:1 or B20 or Sleeved B18 Block w/B16A or B18C Head, 12.5:1 ( (CP Pistons SC7122)
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|
Make |
Acura/Honda |
|
Model |
B16A |
|
Part Number |
SC7122 |
|
Cylinders |
4 |
|
Bore (in) |
3.346 |
|
Bore (mm) |
85 |
|
Size |
+4.0mm |
|
Stroke |
77.4 |
|
Conrod |
134.3 |
|
Comp Height (in) |
1.181 |
|
Comp Height (mm) |
30 |
|
Dom/Dish CC |
4.7 |
|
Compression Ratio |
11.3 |
|
Weight (Grams) |
327 |
|
Pin (mm) |
21 |
|
Rings |
CPN-3347 |
|
Ring Thickness |
1.0 x 1.2 x 2.8mm |
|
Pin included (Standard) |
827-2250-16CP1C |
|
Upgraded Pin |
827-2250-20CP3C |
|
Ultra Duty Pin |
827-2250-25CP3C |
|
Locks |
827x063 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, B16A, 85mm, 11.3:1 or B20 or Sleeved B18 Block w/B16A or B18C Head, 12.5:1 ( (CP Pistons SC7122) |
|---|---|
| Brands | CP Carrillo |
| Engine | B16 - Honda, B18 - Honda |
| 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 can I achieve with the SC7122 pistons in a B20 or sleeved B18 block?
When using the SC7122 pistons in a B20 or sleeved B18 block with a B16A or B18C head, you can achieve a compression ratio of approximately 12.5:1. Ensure that your engine is properly tuned to handle this compression for optimal performance.
What are the recommended bore clearance and ring gap settings for the SC7122 pistons?
Bore clearance and ring gaps for the SC7122 pistons should be set according to the specific application and intended use. Generally, a clearance of 0.0015" to 0.0025" is typical for performance applications, while ring gaps should be tailored to your boost levels and RPM range. Consult with your engine builder for precise specifications.
Are the SC7122 pistons compatible with high lift camshafts?
Yes, the SC7122 pistons feature deep valve reliefs designed to accommodate high lift camshafts. This allows for greater airflow and performance without risking valve-to-piston contact.
What is the weight of the SC7122 pistons and how does it affect engine performance?
The SC7122 pistons weigh 327 grams each. Lighter pistons can improve engine response and reduce reciprocating mass, leading to better acceleration and higher RPM potential. However, ensure your conrods and crankshaft are also rated for the intended performance levels.
What type of wrist pins are included with the SC7122 pistons?
The SC7122 pistons come with standard wrist pins (part number 827-2250-16CP1C) included at no additional cost. If you require upgraded or ultra-duty pins, options are available for purchase separately.
