This Rebuild Kit includes the following quality parts:
Spool Forged H Beam Conrods
Ross Forged Pistons (Rings, Pins and Locks Included)
Cometic MLS Head Gasket
ACL Race Series Main Bearings - STD or 0.25mm
ACL Race Series Big End Bearings - STD or 0.25mm
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
Ross Racing Pistons:
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.
Note: We recommend Joe Gibbs Break in Oil for all new engines.
More Information
Product Name
Nissan RB30ET (SOHC) Rebuild Kit with Spool H Beam Conrods and Ross Pistons (9:1)
Brands
Spool
Engine
RB30ET (SOHC)
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.
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 clearances for the Ross pistons in the RB30ET rebuild kit?
For the Ross pistons, ensure you set the bore clearance according to the manufacturer's specifications, typically around 0.0015" to 0.0025" for performance applications. Additionally, ring gaps should be set based on your intended use, generally around 0.004" per inch of bore for naturally aspirated setups and slightly more for boosted applications.
What is the torque specification for the ARP2000 bolts included with the Spool conrods?
The ARP2000 bolts in the Spool H Beam conrods should be torqued to approximately 55 ft-lb when using ARP Ultra-Torque lubricant. Always refer to ARP's latest instructions for the most accurate guidance.
Do the conrods require any specific machining before installation?
Yes, the Spool H Beam conrods may require big-end honing to ensure proper fitment on the crankshaft journals. It's essential to check the clearances and ensure they meet the specifications for your specific RB30ET build.
What type of head gasket is included in the RB30ET rebuild kit and what surface finish is required?
The rebuild kit includes a Cometic MLS head gasket, which requires a surface finish of around 50 RA or better for optimal sealing. Ensure the cylinder head and block surfaces are machined to this specification.
What is the significance of the 9:1 compression ratio for the Ross pistons?
The 9:1 compression ratio is a balanced choice for the RB30ET, providing a good mix of power and reliability. This ratio is suitable for moderate boost levels while maintaining engine longevity, but always consider tuning, fuel quality, and specific application needs for optimal performance.
