These Spool CP Custom Pistons come in the following specs:
Bore: +0.5mm
Comp Ratio: 9.5:1
Upgraded 9310 / 0.190" Series Pins
Note: They can also be arranged in any bore size and comp ratio as a custom piston – please email for details and pricing.
CP Pistons standard features include:
5310 gudgeon pins (9310 thicker wall thickness pins are available as an upgrade)
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
Double pin oilers force fed from oil ring groove
Pick lock grooves for easy lock removal
Pin fitting included
More Information
Product Name
Spool CP Custom Toyota 3RZ-FE Pistons
Brands
CP Carrillo
Engine
3RZ
Make
Toyota
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.
You can calculate shipping rates inside the shopping cart. After adding all the products you would like, navigate to the cart and click the ESTIMATE SHIPPING & TAX link. .
If you only see the Click and Collect shipping option, it means that your address was not validated correctly.
If you have issues calculating freight, please get in touch. We are happy to help.
Disclaimer:
Product images are for description purposes only. Actual product may vary.
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 Spool CP Custom Toyota 3RZ-FE pistons?
The bore clearance for these pistons should be set according to the engine builder's specifications, typically around 0.0015" to 0.0025". Always verify with your specific engine setup and consider factors like thermal expansion and intended use.
Can I use these pistons with a stock 3RZ-FE engine?
Yes, these pistons can be used with a stock 3RZ-FE engine, but keep in mind that the increased compression ratio of 9.5:1 may require adjustments to fuel quality and tuning to prevent detonation.
What type of rings are included with the Spool CP Custom pistons?
These pistons come with high performance rings designed to provide excellent sealing and durability under high load conditions. Ensure proper ring gap settings are followed for optimal performance.
Are there any specific machining requirements for these pistons?
Yes, the pistons may require specific bore honing to achieve the correct clearance and fitment. It is crucial to ensure that the cylinder bores are properly prepared before installation.
What are the benefits of the upgraded 9310 wrist pins?
The upgraded 9310 wrist pins offer increased strength and durability compared to standard pins, making them suitable for high-performance applications. They help reduce the risk of pin failure under high-stress conditions.
