Forged Pistons for Mitsubishi, 4G63 2G (Rod 156mm), 94mm Stroke, 86mm, 8.5:1 or EVO VIII/EVO IX, 9:1 (CP Pistons SC7245)
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|
Make |
Mitsubishi |
|
Model |
4G63 2G (Rod 156mm, 6MM longer than stock) |
|
Part Number |
SC7245 |
|
Cylinders |
4 |
|
Bore (in) |
3.386 |
|
Bore (mm) |
86 |
|
Size |
+1.0mm |
|
Stroke |
94 |
|
Conrod |
156 |
|
Comp Height (in) |
1.015 |
|
Comp Height (mm) |
25.8 |
|
Dom/Dish CC |
-18.2 |
|
Compression Ratio |
8.5 |
|
Weight (Grams) |
303 |
|
Pin (mm) |
22 |
|
Rings |
CPN-3386 |
|
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 Mitsubishi, 4G63 2G (Rod 156mm), 94mm Stroke, 86mm, 8.5:1 or EVO VIII/EVO IX, 9:1 (CP Pistons SC7245) |
|---|---|
| Brands | CP Carrillo |
| Engine | 4G63 |
| Make | Mitsubishi |
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 do these pistons provide for the 4G63 engine?
The CP Pistons SC7245 provide a compression ratio of 8.5:1 for the Mitsubishi 4G63 engine. For EVO VIII and IX applications, these pistons can achieve a higher compression ratio of 9:1.
What is the recommended bore clearance for these pistons?
The recommended bore clearance for the CP Pistons SC7245 should be determined by the engine builder based on the specific application and intended use. Generally, a clearance of 0.0015" to 0.0025" is common for performance applications, but always verify with your specific setup.
Are these pistons compatible with high lift camshafts?
Yes, the CP Pistons SC7245 are designed with deep valve reliefs to accommodate high lift camshafts, making them suitable for performance builds that require increased airflow.
What is the weight of these pistons and how does it affect performance?
Each CP Piston SC7245 weighs 303 grams. This weight is beneficial for performance as it helps reduce reciprocating mass, allowing for quicker engine response and higher RPM potential, provided the rest of the rotating assembly is balanced accordingly.
What type of wrist pins are included with these pistons?
The CP Pistons SC7245 come with standard wrist pins (part number 866-2250-20CP1C) included at no additional cost. Upgraded and ultra-duty pins are also available for those seeking additional strength for high power applications.
