Nissan RB30DET (RB25/26 Head) Spool Drag Pro I Beam Conrods and CP Forged Pistons (8.5:1)
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These are a flat top piston with no valve reliefs
These CP forged pistons are available in est. 8.2:1 - 8.5:1 compression ratio for the RB30DET ( using RB25 or RB26 cylinder head)
Pistons are available in:
- Compression Ratio: est. 8.2:1 - 8.5:1
- Bore Sizes: STD, +0.5mm and +1mm
- Pistons come with rings, gudgeon pins and pin locks
Spool Drag Pro I Beam connecting rods are the ultimate high strength direct fit con rod for all Nissan RB30 engines.
With new features like:
- Upgraded ARP2000 7/16 bolts
- Increased strength to the beam
- Increased strength around the fasteners / bolts
- Increased strength around the gudgeon pin
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)
- 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 Drag Pro I Beam Conrods and CP Forged Pistons (8.5:1) |
|---|---|
| Brands | Spool |
| Engine | RB30DET (DOHC) |
| Make | Holden, Nissan |
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.
Shipping calculations available at checkout.
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 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 compression ratio do the CP forged pistons provide for the RB30DET?
The CP forged pistons included in the SPL-RB30DET-DP-CP-8.5 kit offer an estimated compression ratio of 8.2:1 to 8.5:1, suitable for use with either an RB25 or RB26 cylinder head.
Do the Spool Drag Pro I Beam conrods require any special installation procedures?
Yes, the Spool Drag Pro I Beam conrods come with ARP2000 7/16 bolts. Ensure to follow ARP's torque specifications or, if using L19 bolts, measure the stretch as per ARP's guidelines for proper installation.
What machining is recommended for the pistons and conrods in this kit?
Pistons require correct bore clearance and ring gaps set by the engine builder. Conrods may need big-end or small-end honing to ensure proper fitment due to factory tolerances.
What type of oil should I use during the break-in period for this engine kit?
For the break-in period of engines using this kit, it is recommended to use Joe Gibbs Break in Oil to ensure proper lubrication and protection of the new components.
Are the conrods and pistons in this kit suitable for high-performance applications?
Yes, the Spool Drag Pro I Beam conrods and CP forged pistons are designed for high-performance applications, providing increased strength and reliability. However, the overall performance will depend on proper machining, clearances, tuning, and fuel quality.
