Forged Pistons for Toyota 1NZFE 75.5mm 11.5:1 (CP Pistons SC7448)
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|
Make |
Toyota |
|
Model |
1NZFE |
|
Part Number |
SC7448 |
|
Cylinders |
4 |
|
Bore (in) |
2.972 |
|
Bore (mm) |
75.5 |
|
Size |
+0.5mm |
|
Stroke |
84.7 |
|
Conrod |
140.8 |
|
Comp Height (in) |
1.089 |
|
Comp Height (mm) |
27.7 |
|
Dom/Dish CC |
-4.7 |
|
Compression Ratio |
11.5 |
|
Weight (Grams) |
232 |
|
Pin (mm) |
18 |
|
Rings |
CPN-2972 |
|
Ring Thickness |
1.0 x 1.2 x 2.8mm |
|
Pin included (Standard) |
708-2250-15CP1C |
|
Upgraded Pin |
708-2250-18CP3C |
|
Ultra Duty Pin |
NA |
|
Locks |
708x050 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 Toyota 1NZFE 75.5mm 11.5:1 (CP Pistons SC7448) |
|---|---|
| Brands | CP Carrillo |
| Engine | 1NZFE |
| Make | Toyota |
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 compression ratio for the SC7448 pistons in a 1NZFE engine?
The SC7448 pistons are designed for a compression ratio of 11.5:1 in the Toyota 1NZFE engine. Ensure that your engine's combustion chamber and head gasket are compatible to achieve this ratio.
What are the specific machining requirements for installing the SC7448 pistons?
When installing SC7448 pistons, it's crucial to ensure the bore clearance is set correctly. This typically requires honing the cylinder bores to match the 75.5mm diameter of the pistons. Additionally, check the ring gaps according to your specific application and tuning goals.
Can I use these pistons with high lift camshafts?
Yes, the SC7448 pistons feature deep valve reliefs that accommodate high lift camshafts, making them suitable for performance applications that involve upgraded valve sizes and cam profiles.
What is the weight of the SC7448 pistons and how does it affect performance?
The SC7448 pistons weigh 232 grams each. Lighter pistons can improve engine response and reduce inertia, which is beneficial for high RPM applications. However, ensure that your engine is balanced with the full rotating assembly to maintain reliability.
What type of wrist pins are included with the SC7448 pistons?
The SC7448 pistons come with standard wrist pins (part number 708-2250-15CP1C) included at no additional cost. If you require an upgraded pin, you can opt for the 708-2250-18CP3C for enhanced durability.
