Forged Pistons for Acura/Honda, B16A, 85mm, 9:1 or B20 or Sleeved B18 Block w/B16A or B18C Head, 9.7:1 (CP Pistons SC7019)
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|
Make |
Acura/Honda |
|
Model |
B16A |
|
Part Number |
SC7019 |
|
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 |
-7.9 |
|
Compression Ratio |
9 |
|
Weight (Grams) |
317 |
|
Pin (mm) |
21 |
|
Rings |
CPN-3347 |
|
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, B16A, 85mm, 9:1 or B20 or Sleeved B18 Block w/B16A or B18C Head, 9.7:1 (CP Pistons SC7019) |
|---|---|
| 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 SC7019 pistons?
The SC7019 pistons provide a compression ratio of 9:1 when used in a B16A engine. For a B20 or sleeved B18 block with a B16A or B18C head, the compression ratio can be increased to 9.7:1. Ensure that your engine is properly tuned to accommodate these ratios.
What are the recommended bore and ring gap specifications for these pistons?
The SC7019 pistons have an 85mm bore size and require careful attention to bore clearance and ring gaps. As a general guideline, the bore clearance should be set according to the specific application and builder's preferences, while ring gaps should be set based on the intended use, typically wider for boosted applications.
Can I use these pistons with high lift camshafts?
Yes, the SC7019 pistons are designed with deep valve reliefs to accommodate high lift camshafts and oversized valves. This makes them suitable for performance builds that require enhanced airflow and power.
What is the weight of the SC7019 pistons and how does it affect performance?
Each SC7019 piston weighs 317 grams. The lightweight design helps reduce reciprocating mass, which can improve throttle response and overall engine performance. However, ensure that your engine's rotating assembly is balanced accordingly.
Are the wrist pins included with the SC7019 pistons suitable for high-performance applications?
Yes, the SC7019 pistons come with standard wrist pins included at no additional cost. For even higher performance, consider upgrading to the ultra-duty pins, which offer increased strength for high-revving applications.
