Forged Pistons for Toyota 4AGE 20V 81.5 9:1 ( CP Pistons SC7656)
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|
Make |
Toyota |
|
Model |
4AG 20V |
|
Part Number |
SC7656 |
|
Cylinders |
4 |
|
Bore (in) |
3.209 |
|
Bore (mm) |
81.5 |
|
Size |
+0.5mm |
|
Stroke |
77 |
|
Conrod |
122 |
|
Comp Height (in) |
1.208 |
|
Comp Height (mm) |
30.7 |
|
Dom/Dish CC |
-8.7 |
|
Compression Ratio |
9 |
|
Weight (Grams) |
283 |
|
Pin (mm) |
20 |
|
Rings |
CPN-3209 |
|
Ring Thickness |
1.0 x 1.2 x 2.8mm |
|
Pin included (Standard) |
787-2250-16CP1C |
|
Upgraded Pin |
787-2250-18CP3C |
|
Ultra Duty Pin |
787-2250-24CP3C |
|
Locks |
787X050 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 4AGE 20V 81.5 9:1 ( CP Pistons SC7656) |
|---|---|
| Brands | CP Carrillo |
| Engine | 4AGE |
| 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 bore clearance for the CP Pistons SC7656 in a Toyota 4AGE 20V?
For the CP Pistons SC7656, a typical bore clearance of 0.0015" to 0.0025" is recommended. However, final clearance should be determined by the engine builder based on specific application and tolerances.
What compression ratio can I expect with the CP Pistons SC7656 in my 4AGE engine?
The CP Pistons SC7656 are designed for a compression ratio of 9:1. This is suitable for applications using pump fuel, but always consider tuning and fuel quality for optimal performance.
Can I use these pistons with upgraded valve sizes and high lift camshafts?
Yes, the CP Pistons SC7656 feature deep valve reliefs that accommodate oversized valves and high lift camshafts, making them suitable for performance builds.
What is the weight of the CP Pistons SC7656 and how does it affect engine performance?
The CP Pistons SC7656 weigh 283 grams each. Lighter pistons can improve engine responsiveness and reduce overall rotating mass, but ensure that the entire rotating assembly is balanced for reliability.
What type of wrist pins are included with the CP Pistons SC7656?
The CP Pistons SC7656 come with standard wrist pins (part number 787-2250-16CP1C) included at no additional cost. Upgraded and ultra-duty pins are also available for those seeking additional strength.
