Forged Pistons for Nissan RB25 87 8.5:1 (CP Pistons SC73081)
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|
Make |
Nissan |
|
Model |
RB25DET |
|
Part Number |
SC73081 |
|
Cylinders |
6 |
|
Bore (in) |
3.425 |
|
Bore (mm) |
87 |
|
Size |
+1.0mm |
|
Stroke |
71.7 |
|
Conrod |
121.5 |
|
Comp Height (in) |
1.24 |
|
Comp Height (mm) |
31.5 |
|
Dom/Dish CC |
10.6 |
|
Compression Ratio |
8.5 |
|
Weight (Grams) |
355 |
|
Pin (mm) |
21 |
|
Rings |
CPN-3425 |
|
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 Nissan RB25 87 8.5:1 (CP Pistons SC73081) |
|---|---|
| Brands | CP Carrillo |
| Engine | RB25 |
| Make | Nissan |
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 CP Pistons SC73081?
For the CP Pistons SC73081, a typical bore clearance of 0.0025" to 0.0030" is recommended. However, it's crucial to verify this with your specific engine build and ensure proper fitting by your engine builder.
What compression ratio do the CP Pistons SC73081 achieve?
The CP Pistons SC73081 have a compression ratio of 8.5:1 when used in the RB25DET engine. This ratio is suitable for applications requiring a balance between power and reliability, especially in boosted setups.
Can I use these pistons with high lift camshafts?
Yes, the CP Pistons SC73081 are designed with deep valve reliefs to accommodate high lift camshafts and oversized valves, making them suitable for high-performance applications.
What is the weight of the CP Pistons SC73081?
Each CP Piston SC73081 weighs approximately 355 grams. This lightweight design helps reduce reciprocating mass, contributing to better engine response and performance.
What type of wrist pins are included with the CP Pistons SC73081?
The CP Pistons SC73081 come with standard wrist pins (part number 827-2250-20CP1C) included at no additional cost. Upgraded and ultra-duty pins are also available for those seeking additional strength.
