Forged Pistons for Mitsubishi, 4G63 2G, 100mm Stroke, 85.5mm, 8.5:1 or EVO VIII/EVO IX, 9:1 (CP Pistons SC7253)
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|
Make |
Mitsubishi |
|
Model |
4G63 2G |
|
Part Number |
SC7253 |
|
Cylinders |
4 |
|
Bore (in) |
3.366 |
|
Bore (mm) |
85.5 |
|
Size |
+0.5mm |
|
Stroke |
100 |
|
Conrod |
150 |
|
Comp Height (in) |
1.134 |
|
Comp Height (mm) |
28.8 |
|
Dom/Dish CC |
-21.7 |
|
Compression Ratio |
8.5 |
|
Weight (Grams) |
286 |
|
Pin (mm) |
22 |
|
Rings |
CPN-3366 |
|
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, 100mm Stroke, 85.5mm, 8.5:1 or EVO VIII/EVO IX, 9:1 (CP Pistons SC7253) |
|---|---|
| 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 can I achieve with SC7253 pistons in my 4G63 engine?
The SC7253 pistons are designed for two compression ratios: 8.5:1 for standard applications and 9:1 for EVO VIII/EVO IX setups. The choice of compression ratio will depend on your specific build and intended use.
What is the recommended bore clearance for the SC7253 pistons?
Bore clearance for the SC7253 pistons should be determined by the engine builder, taking into account the specific application and operating conditions. A typical clearance for performance applications is around 0.0015" to 0.0025".
Are the SC7253 pistons compatible with high lift camshafts?
Yes, the SC7253 pistons feature deep valve reliefs that accommodate high lift camshafts, making them suitable for performance builds that require increased valve lift.
What type of wrist pins are included with the SC7253 pistons?
The SC7253 pistons 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.
Do I need to machine the SC7253 pistons before installation?
While the SC7253 pistons are fully CNC machined and balanced, it is essential to check the bore and ring gaps during installation. Additional machining may be required based on your engine's specific tolerances and requirements.
