Nissan RB30DET (RB25/26 Head) Spool H Beam Conrods and CP Forged Pistons (9.0:1)
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These CP Forged Pistons are a custom piston designed to achieve 9.0:1 compression ratio using the RB30 block with the RB25 or RB26 cylinder head
Pistons are available in:
- Compression Ratio: 9.0:1
- Bore Sizes: 86.5mm and 87mm
- 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 | Nissan RB30DET (RB25/26 Head) Spool H Beam Conrods and CP Forged Pistons (9.0:1) |
|---|---|
| Brands | Spool |
| Engine | RB25, RB26, RB30DET (DOHC) |
| Make | Holden, Nissan |
Delivery & Freight
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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 bore sizes are available for the CP pistons in the SPL-RB30DET-H-CP-9 kit?
The CP pistons in the SPL-RB30DET-H-CP-9 kit are available in bore sizes of 86.5mm and 87mm. Ensure you select the correct size based on your engine's specifications.
What is the recommended compression ratio for the SPL-RB30DET-H-CP-9 kit?
The SPL-RB30DET-H-CP-9 kit is designed to achieve a compression ratio of 9.0:1 when using the RB30 block with either the RB25 or RB26 cylinder head.
What type of fasteners are used in the Spool conrods for this kit?
The Spool conrods in the SPL-RB30DET-H-CP-9 kit come standard with ARP2000 fasteners. An upgrade to L19 fasteners is also available for enhanced strength.
Do the CP pistons come with all necessary components for installation?
Yes, the CP pistons included in the SPL-RB30DET-H-CP-9 kit come with rings, gudgeon pins, and pin locks, ensuring you have everything needed for installation.
What machining considerations should I keep in mind when using the SPL-RB30DET-H-CP-9 kit?
When using the SPL-RB30DET-H-CP-9 kit, ensure to check bore clearance and set ring gaps according to your engine build. Additionally, proper fitment of the conrods may require honing of the big-end or small-end, depending on your specific application.
