Forged Pistons for Acura/Honda, B18A1/B1, 81.5mm, 10.5:1 (CP Pistons SC7106)
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|
Make |
Acura |
|
Model |
B18A1/B1 |
|
Part Number |
SC7106 |
|
Cylinders |
4 |
|
Bore (in) |
3.209 |
|
Bore (mm) |
81.5 |
|
Size |
+0.5mm |
|
Stroke |
89 |
|
Conrod |
137 |
|
Comp Height (in) |
1.181 |
|
Comp Height (mm) |
30 |
|
Dom/Dish CC |
2 |
|
Compression Ratio |
10.5 |
|
Weight (Grams) |
292 |
|
Pin (mm) |
21 |
|
Rings |
CPN-3209 |
|
Ring Thickness |
1.0 x 1.2 x 2.8mm |
|
Pin included (Standard) |
827-2250-20CP1C |
|
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, B18A1/B1, 81.5mm, 10.5:1 (CP Pistons SC7106) |
|---|---|
| Brands | CP Carrillo |
| Engine | B18A1 / B1 |
| 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 is the recommended bore clearance for the SC7106 pistons?
For the SC7106 pistons, a typical bore clearance of 0.0015" to 0.0020" is recommended. However, final clearance should be determined based on the specific engine build and thermal expansion considerations.
What compression ratio can I expect with the SC7106 pistons in a B18A1/B1 engine?
The SC7106 pistons provide a compression ratio of 10.5:1 when used in a B18A1/B1 engine with the standard deck height and head gasket. Ensure that all components are compatible to achieve this ratio.
Can I use the SC7106 pistons with aftermarket camshafts?
Yes, the SC7106 pistons are designed with deep valve reliefs to accommodate high lift camshafts and oversized valves. Always verify clearance with your specific camshaft choice during assembly.
What type of wrist pins are included with the SC7106 pistons?
The SC7106 pistons come with standard wrist pins (part number 827-2250-20CP1C) included at no additional cost. Upgraded and ultra-duty pins are available separately if required for higher performance applications.
What machining processes are necessary for the SC7106 pistons?
Before installation, ensure that the cylinder bores are properly honed to match the piston size and that the ring gaps are set according to your engine's specifications. Additionally, the pistons should be balanced with the full rotating assembly for optimal performance.
