Toyota 1JZ-GTE Spool H Beam Conrods and CP Forged Pistons
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Spool Toyota 1JZ Forged Connecting Rods and CP Forged Pistons
Pistons are available in:
- Compression Ratio: 9.0:1
- Bore Sizes: STD, +0.5mm, +1mm, + 1.5mm
- Pistons come with rings, gudgeon pins and pin locks
Spool Connecting Rods Feature:
- ARP 2000 fasteners (L19 fasteners are available as an upgrade)
- High tensile 4340 forged steel
- 2 Piece forging
- Hardness of HRC36-42
- Dowelled caps for precision alignment
- X-RAY & Sonic tested
- Quenching and heat treated
- Shot peened
- 100% Magnafluxed
- Weight Matched Sets +/- 1 gram
- Vacuum degassed to remove impurities
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 aluminium 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
Note: We recommend Joe Gibbs Break in Oil for all new engines.
| Product Name | Toyota 1JZ-GTE Spool H Beam Conrods and CP Forged Pistons |
|---|---|
| Brands | Spool |
| Engine | 1JZ |
| 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.
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Disclaimer:
Product images are for description purposes only. Actual product may vary.
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What is included in a typical Spool engine kit?
Kits usually include pistons, rings, rods, bearings and related hardware depending on the engine family. Check the listing for exact inclusions.
Do I still need machining with a full engine kit?
Yes. The block must be honed and all clearances checked and set by your builder. Assembly should only occur after full measurement and verification.
What are the recommended bore clearances for the CP pistons in the 1JZ-GTE kit?
Bore clearances for the CP pistons should be set according to the manufacturer's specifications and the engine builder's preferences. Typically, a clearance of 0.0015" to 0.0025" is common for performance applications, but always verify with your specific setup and consider factors such as thermal expansion and intended use.
What is the torque specification for the ARP2000 bolts included with the conrods?
For the ARP2000 bolts in the Spool 1JZ-GTE conrods, the recommended torque is approximately 55 ft-lb when using ARP Ultra-Torque lubricant. Always refer to ARP's latest instructions for the most accurate specifications.
Do the CP pistons accommodate high lift camshafts?
Yes, the CP pistons feature deep valve reliefs designed to accommodate high lift camshafts, making them suitable for modified 1JZ-GTE engines that require additional clearance for performance cam profiles.
What is the compression ratio of the pistons in this kit?
The pistons in the Spool 1JZ-GTE kit are available with a compression ratio of 9.0:1. This ratio is a good balance for performance applications while maintaining reliability, but ensure it aligns with your overall engine build and tuning strategy.
Are there any specific machining requirements for the conrods?
Yes, the conrods may require big-end or small-end honing to ensure proper fitment due to factory journal and pin size variations. It's essential to check clearances and perform any necessary machining for optimal performance and reliability.
