Nissan RB30DET (DOHC) Rebuild Kit with Spool Drag Pro I Beam Conrods and Ross Racing Forged Pistons
These are to suit RB30 block with either RB25 or RB26 cylinder head.

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Holden/Nissan RB30DET (DOHC) Rebuild Kit -Spool Drag Pro I Beams + Ross Racing Forged Pistons
This Rebuild Kit includes the following quality parts:
- Spool Drag Pro I Beam Connecting Rods (ARP 2000 7/16 bolts)
- Custom Ross Racing Forged Pistons (Rings, Pins and Locks)
- Cometic MLS Head Gasket
- ACL Race Series Main Bearings - STD or 0.25mm
- ACL Race Series Big End Bearings - STD or 0.25mm
Ross Racing Pistons Feature:
These Pistons are custom made for Spool and rated at 900-1000hp by Ross Racing Pistons.
With upgrade pins Ross rate these pistons up to 250 bhp per cylinder.
- Compression Ratio:9.0:1
- Bore Sizes: 87mm
- Pistons come with NPR Gas Nitrided top ring, three pcs. oil
- 0.225” wall Carbon steel
- Forged 2618
- Locks
All of Ross Racing Pistons (since 1985) have been forged from 2618 billet bar stock and have been heat treated and aged to a T61 condition (2618-T61). 2618-T61 is the material that is used when fatigue resistance and durability are of prime importance by all premium racing piston manufacturers.
This material has less than 1% silicon particulate content. High silicon content pistons (forged from 4032 or MS75) will not stand up to the most extreme stress placed on many racing pistons. If a crack starts to form in a high silicon piston it will continue until the piston experiences a catastrophic failure. Simply stated, adding sand to the aluminum only makes it more brittle. In the rare instance of a 2618-T61 piston cracking, the crack will continue to an area where the stress is not as great and will then stop. Another advantage of 2618-T61 over the high silicon pistons is the ability to keep its shape under extreme pressure and high RPM's. "Skirt Shrinking" is not a problem with ROSS Racing Pistons.
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
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout. If you are unsure get in touch with [email protected]
| Product Name | Nissan RB30DET (DOHC) Rebuild Kit with Spool Drag Pro I Beam Conrods and Ross Racing Forged Pistons |
|---|---|
| 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 is the recommended torque specification for the ARP 2000 bolts included in the Spool Drag Pro I Beam conrods?
The ARP 2000 bolts should be torqued to approximately 75 ft-lb when using ARP Ultra-Torque lubricant. Always refer to ARP's latest instructions for the most accurate specifications.
What machining is required for the Ross Racing forged pistons in this rebuild kit?
The Ross Racing forged pistons require proper bore clearance and ring gap settings as determined by the engine builder. Ensure that the bore is honed to the correct size for optimal performance.
Can I use this rebuild kit with an RB25 or RB26 cylinder head?
Yes, this rebuild kit is designed to suit an RB30 block with either an RB25 or RB26 cylinder head, allowing for versatile engine builds.
What is the maximum power rating for the Ross Racing pistons included in this kit?
The Ross Racing pistons are rated for 900-1000hp, with upgraded pins allowing for up to 250 bhp per cylinder. However, actual performance will depend on factors like tuning, fuel quality, and boost levels.
Do the Spool Drag Pro I Beam conrods require any specific machining?
Yes, the big-end or small-end of the Spool Drag Pro I Beam conrods may require honing to achieve the correct journal and pin sizes, depending on the specific engine assembly.
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