Forged Pistons for Mitsubishi, 4G63 2G (Rod 156mm), 94mm Stroke, 86mm, 9:1 or EVO VIII/EVO IX, 9.5:1 (CP Pistons SC7248)
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|
Make |
Mitsubishi |
|
Model |
4G63 2G (Rod 156mm, 6MM longer than stock) |
|
Part Number |
SC7248 |
|
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 |
-14.1 |
|
Compression Ratio |
9 |
|
Weight (Grams) |
280 |
|
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, 9:1 or EVO VIII/EVO IX, 9.5:1 (CP Pistons SC7248) |
|---|---|
| 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 the SC7248 pistons provide for the 4G63 engine?
The SC7248 pistons offer a compression ratio of 9:1 when used in the Mitsubishi 4G63 2G engine. For EVO VIII and EVO IX applications, these pistons can achieve a higher compression ratio of 9.5:1.
What are the recommended machining requirements for the SC7248 pistons?
When installing SC7248 pistons, ensure the bore clearance is set correctly according to the engine builder's specifications. Additionally, verify that the ring gaps are adjusted appropriately for your specific application to prevent issues under high boost or RPM.
Can the SC7248 pistons accommodate high lift camshafts?
Yes, the SC7248 pistons feature deep valve reliefs designed to accommodate high lift camshafts, making them suitable for performance builds that include oversized valves and aggressive cam profiles.
What is the weight of the SC7248 pistons and how does it affect engine performance?
Each SC7248 piston weighs 280 grams. This lightweight design contributes to reduced reciprocating mass, which can enhance engine response and overall performance, especially at higher RPMs.
What type of wrist pins are included with the SC7248 pistons?
The SC7248 pistons come standard with wrist pins, specifically the 22mm pins identified as 866-2250-20CP1C. Upgraded and ultra-duty pins are also available for those seeking additional strength for high-performance applications.
