Forged Pistons for Acura/Honda, 87.5mm, K20A 9.6:1 or K24A 10.9:1 ( (CP Pistons SC70458)
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/A3 |
|
Part Number |
SC70458 |
|
Cylinders |
4 |
|
Bore (in) |
3.445 |
|
Bore (mm) |
87.5 |
|
Size |
+1.5mm |
|
Stroke |
86 |
|
Conrod |
139 |
|
Comp Height (in) |
1.181 |
|
Comp Height (mm) |
30 |
|
Dom/Dish CC |
-3.3 |
|
Compression Ratio |
9.7 FT |
|
Weight (Grams) |
338 |
|
Pin (mm) |
22 |
|
Rings |
CPN-3445 |
|
Ring Thickness |
1.0 x 1.2 x 2.8mm |
|
Pin included (Standard) |
866-2250-20CP1C |
|
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, 87.5mm, K20A 9.6:1 or K24A 10.9:1 ( (CP Pistons SC70458) |
|---|---|
| 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 compression ratio for the SC70458 pistons in a K20A engine?
The SC70458 pistons provide a compression ratio of 9.6:1 for the K20A engine. For the K24A, the compression ratio is 10.9:1. Ensure that your engine is built to accommodate these ratios for optimal performance.
What machining is required for proper fitment of the SC70458 pistons?
When installing the SC70458 pistons, you should verify the bore clearance and ensure that the ring gaps are set correctly according to your engine's specifications. Additionally, the pistons may require honing to achieve the correct fit in the cylinder bores.
Can I use these pistons with high lift camshafts?
Yes, the SC70458 pistons are designed with deep valve reliefs to accommodate high lift camshafts and oversized valves. This feature allows for increased airflow and performance without compromising piston integrity.
What is the weight of the SC70458 pistons and how does it affect engine performance?
The SC70458 pistons weigh 338 grams each. Lighter pistons can improve engine response and reduce rotating mass, which can enhance overall performance. However, ensure that your engine is balanced with the full rotating assembly for optimal reliability.
What type of wrist pins are included with the SC70458 pistons?
The SC70458 pistons come with standard wrist pins included at no additional cost. For those seeking enhanced performance, upgraded and ultra-duty wrist pins are also available as options.
