Forged Pistons for Mitsubishi, 4G63 2G (Rod 156mm), 86mm, 10:1 or EVO VIII/EVO IX, 10.5:1 (CP Pistons SC7242)
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|
Make |
Mitsubishi |
|
Model |
4G63 2G (Rod 156mm, 6MM longer than stock) |
|
Part Number |
SC7242 |
|
Cylinders |
4 |
|
Bore (in) |
3.386 |
|
Bore (mm) |
86 |
|
Size |
+1.0mm |
|
Stroke |
88 |
|
Conrod |
156 |
|
Comp Height (in) |
1.134 |
|
Comp Height (mm) |
28.8 |
|
Dom/Dish CC |
-2.2 |
|
Compression Ratio |
10 FT |
|
Weight (Grams) |
305 |
|
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), 86mm, 10:1 or EVO VIII/EVO IX, 10.5:1 (CP Pistons SC7242) |
|---|---|
| Brands | CP Carrillo |
| Engine | 4G63 |
| Make | Mitsubishi |
Delivery & Freight
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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 compression ratio do these pistons provide for the 4G63 engine?
The SC7242 pistons offer a compression ratio of 10:1 for standard applications and 10.5:1 for EVO VIII/EVO IX setups. Ensure your engine is tuned appropriately for the desired compression.
What is the recommended bore clearance for these pistons?
For the SC7242 pistons, a typical bore clearance of 0.0015" to 0.0025" is recommended. However, always verify with your engine builder to ensure proper fitment based on your specific engine conditions.
Do these pistons come with wrist pins, and what are the options?
Yes, the SC7242 pistons include standard wrist pins at no additional cost. Upgraded and ultra-duty pins are also available for those looking for enhanced performance and durability.
Can these pistons accommodate high lift camshafts?
Yes, the SC7242 pistons feature deep valve reliefs designed to accommodate high lift camshafts, making them suitable for performance applications with oversized valves.
What machining processes should be considered when installing these pistons?
When installing the SC7242 pistons, ensure the cylinder bores are properly honed to match the piston size, and check ring gaps to meet performance specifications. Balancing the rotating assembly is also crucial for optimal performance.
