Forged Pistons for Subaru FA20 / Toyota 4U-GSE, 86.5mm, 9:1 (CP Pistons SC7403)
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|
Make |
Toyota |
|
Model |
FA20 / 4U-GSE |
|
Part Number |
SC7403 |
|
Cylinders |
4 |
|
Bore (in) |
3.406 |
|
Bore (mm) |
86.5 |
|
Size |
+0.5mm |
|
Stroke |
86 |
|
Conrod |
129.3 |
|
Comp Height (in) |
1.292 |
|
Comp Height (mm) |
32.8 |
|
Dom/Dish CC |
-19.1 |
|
Compression Ratio |
9 |
|
Weight (Grams) |
312 |
|
Pin (mm) |
22 |
|
Rings |
CPN-3406 |
|
Ring Thickness |
1.0 x 1.2 x 2.8mm |
|
Pin included (Standard) |
866-2250-15CP1C |
|
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 Subaru FA20 / Toyota 4U-GSE, 86.5mm, 9:1 (CP Pistons SC7403) |
|---|---|
| Brands | CP Carrillo |
| Engine | FA20, 4U-GSE |
| Make | Subaru |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
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Disclaimer:
Product images are for description purposes only. Actual product may vary.
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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 is the compression ratio of the SC7403 pistons?
The SC7403 pistons have a compression ratio of 9:1, making them suitable for builds that require a balance between performance and reliability.
What is the recommended bore size for the SC7403 pistons?
The SC7403 pistons are designed for an 86.5mm bore size, which is a +0.5mm oversize for the FA20 and 4U-GSE engines.
What type of wrist pins are included with the SC7403 pistons?
The SC7403 pistons come with standard wrist pins (part number 866-2250-15CP1C) included at no additional cost. Upgraded and ultra-duty pins are also available.
Are the SC7403 pistons compatible with high lift camshafts?
Yes, the SC7403 pistons feature deep valve reliefs that accommodate high lift camshafts, making them suitable for performance applications.
What is the weight of each SC7403 piston?
Each SC7403 piston weighs 312 grams, which helps maintain a good balance between strength and weight for performance applications.
