Spool Custom Nissan RB20 Ross Racing Forged Piston
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Spool Nissan RB20 Ross Racing Forged Piston
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: 78.5mm or 79mm
- 0.225” wall Carbon steel gudgeon pin (upgrade to H13 available)
- 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.
Product images are for description purposes only. Actual product may vary.
| Product Name | Spool Custom Nissan RB20 Ross Racing Forged Piston |
|---|---|
| Brands | Ross Racing Pistons |
| Engine | RB20 |
| 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 information do I need to match these pistons to my engine?
You need the engine code, bore size, stroke, rod length, pin diameter and target compression ratio. These determine the correct piston compression height and crown design.
How should ring gaps be set for these pistons?
Ring gaps must be set by your engine builder based on fuel type, boost level and the intended rpm range. Forced-induction engines usually require larger gaps.
Are forged pistons suitable for street engines?
Yes. Forged pistons handle detonation and high cylinder pressure better than cast units. Your builder should set the piston-to-bore clearance to suit your application.
What is the recommended bore size for the Spool Custom Nissan RB20 Ross Racing Forged Piston?
The Spool Custom Nissan RB20 Ross Racing Forged Piston is available in bore sizes of 78.5mm and 79mm. Ensure you select the correct size based on your engine's specifications.
What is the maximum horsepower rating for these pistons?
These pistons are rated by Ross Racing Pistons for use in applications producing between 900 to 1000 horsepower, depending on the overall engine build and tuning.
What material are these pistons made from and why is it beneficial?
These pistons are forged from 2618 billet bar stock and heat treated to a T61 condition. This material offers superior fatigue resistance and durability, making it ideal for high-performance applications where reliability under extreme conditions is critical.
Can I upgrade the gudgeon pins with these pistons?
Yes, the Spool Custom Nissan RB20 Ross Racing Forged Pistons come with a 0.225” wall carbon steel gudgeon pin as standard, and an upgrade to H13 pins is available for enhanced strength.
What compression ratio do these pistons provide?
These pistons have a compression ratio of 9.0:1, which is suitable for a variety of performance applications while balancing power and reliability.
