Forged Pistons for Mazda, 2.3L DISI MZR, 22mm pin, 87.5mm, 9.5:1 (CP Pistons SC7538)
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|
Make |
Mazda |
|
Model |
DISI MZR 2.3L |
|
Part Number |
SC7538 |
|
Cylinders |
4 |
|
Bore (in) |
3.445 |
|
Bore (mm) |
87.5 |
|
Size |
STD |
|
Stroke |
94 |
|
Conrod |
150.55 |
|
Comp Height (in) |
1.28 |
|
Comp Height (mm) |
32.5 |
|
Dom/Dish CC |
-13.8 |
|
Compression Ratio |
9.5 |
|
Weight (Grams) |
348 |
|
Pin (mm) |
22 |
|
Rings |
CPN-3445 |
|
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 Mazda, 2.3L DISI MZR, 22mm pin, 87.5mm, 9.5:1 (CP Pistons SC7538) |
|---|---|
| Brands | CP Carrillo |
| Engine | MZR 2.3L DISI |
| Make | Mazda |
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 SC7538?
The recommended bore clearance for the CP Pistons SC7538 in the Mazda 2.3L DISI engine typically falls between 0.0015" to 0.0025". However, final clearance should be determined by the engine builder based on specific application and tolerances.
What type of rings are included with the SC7538 pistons?
The SC7538 pistons come with high-performance CP rings, specifically the CPN-3445 set, which includes a 1.0mm top ring, a 1.2mm second ring, and a 2.8mm oil ring. Ensure proper ring gap settings are followed for optimal performance.
Can these pistons accommodate high lift camshafts?
Yes, the CP Pistons SC7538 feature deep valve reliefs designed to accommodate high lift camshafts and oversized valves, making them suitable for performance applications where increased airflow is required.
What is the weight of the SC7538 pistons, and how does it affect performance?
The SC7538 pistons weigh 348 grams each. Lighter pistons can improve engine response and reduce rotating mass, but it is essential to balance them with the full rotating assembly to maintain reliability and performance.
What is the compression ratio of the SC7538 pistons, and how does it impact engine tuning?
The SC7538 pistons have a compression ratio of 9.5:1. This ratio can provide a good balance of power and reliability, but tuning must consider fuel quality, boost levels, and overall engine setup to ensure optimal performance.
