Forged Pistons for Acura/Honda, K20A/A2, 86mm, 11.5:1 ( (CP Pistons SC7140)
For shipping cost -add all the products you would like, then navigate to the shopping cart to calculate shipping quote.
|
Make |
Acura/Honda |
|
Model |
K20A/A2 |
|
Part Number |
SC7140 |
|
Cylinders |
4 |
|
Bore (in) |
3.386 |
|
Bore (mm) |
86 |
|
Size |
STD |
|
Stroke |
86 |
|
Conrod |
139 |
|
Comp Height (in) |
1.181 |
|
Comp Height (mm) |
30 |
|
Dom/Dish CC |
8.5 |
|
Compression Ratio |
11.5 |
|
Weight (Grams) |
334 |
|
Pin (mm) |
22 |
|
Rings |
CPN-3386 |
|
Ring Thickness |
1.0 x 1.2 x 2.8mm |
|
Pin included (Standard) |
866-2250-15CP1C |
|
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, K20A/A2, 86mm, 11.5:1 ( (CP Pistons SC7140) |
|---|---|
| Brands | CP Carrillo |
| Engine | K20 |
| Make | Honda |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
You can calculate shipping rates inside the shopping cart. After adding all the products you would like, navigate to the cart and click the ESTIMATE SHIPPING & TAX link. .
If you only see the Click and Collect shipping option, it means that your address was not validated correctly.
If you have issues calculating freight, please get in touch. We are happy to help.
Disclaimer:
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout.
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 is the recommended bore clearance for the SC7140 pistons?
For the SC7140 pistons, a typical bore clearance of 0.0015" to 0.0025" is recommended. However, it's essential to consult with your engine builder for specific clearance requirements based on your application and intended power levels.
What compression ratio can I expect with the SC7140 pistons in a K20 engine?
The SC7140 pistons provide a compression ratio of 11.5:1 when used in a K20 engine with a standard stroke. This ratio is suitable for high-performance applications, but ensure your fuel quality and tuning are appropriate for this level of compression.
Do I need to modify my cylinder head to use the SC7140 pistons?
The SC7140 pistons feature deep valve reliefs designed to accommodate high lift camshafts and oversized valves. However, depending on your specific camshaft and valve setup, additional modifications to the cylinder head may be necessary for optimal clearance.
What type of wrist pin is included with the SC7140 pistons?
The SC7140 pistons come with a standard wrist pin (part number 866-2250-15CP1C) included at no extra cost. For applications requiring additional strength, upgraded and ultra-duty wrist pins are available.
How do the SC7140 pistons perform with high boost applications?
The SC7140 pistons are designed for high-performance applications and can handle moderate boost levels. However, reliability at high boost depends on proper tuning, fuel quality, and overall engine assembly. Always consult with your engine builder to ensure your setup is suitable for your power goals.
