Nissan TB48 Spool H Beam Conrods and Ross Racing Forged Pistons
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Spool Nissan TB48 Forged Connecting Rods with ARP 2000 7/16 fasteners and Ross Racing Forged Pistons with upgraded Tool Steel Pins
Pistons are available in:
- Compression Ratio: 9.0:1
- Bore Sizes: +0.5mm
- Pistons come with rings, gudgeon pins and pin locks
- Forged 2618
- Tool Steel Pins
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.
| Product Name | Nissan TB48 Spool H Beam Conrods and Ross Racing Forged Pistons |
|---|---|
| Brands | Spool |
| Engine | TB48 |
| Make | 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 are the recommended torque specifications for the ARP 2000 bolts in the TB48 conrods?
For the ARP 2000 7/16 fasteners used in the TB48 conrods, the recommended torque specification is around 75 ft-lb when using ARP Ultra-Torque lubricant. Always refer to ARP's latest instructions for the most accurate guidance.
What is the recommended piston-to-wall clearance for the Ross Racing forged pistons?
The piston-to-wall clearance for the Ross Racing forged pistons should be set according to the specific application and builder's preference, typically ranging from 0.0015" to 0.0030". Ensure to consult with your engine builder for the best fitment based on your setup.
Do the conrods require any specific machining before installation?
Yes, the conrods may require big-end or small-end honing to ensure proper fitment due to factory journal and pin size variations. It is essential to check clearances and perform any necessary machining before installation.
What compression ratio do the Ross Racing pistons provide for the TB48 engine?
The Ross Racing pistons included in this kit provide a compression ratio of 9.0:1. This ratio is suitable for a range of performance applications, but ensure your tuning and fuel quality match the intended use.
What materials are the Ross Racing pistons made from?
The Ross Racing pistons are forged from 2618 billet bar stock and have been heat treated to a T61 condition. This material is known for its excellent fatigue resistance and durability, making it ideal for high-performance applications.
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