Nissan RB30ET Ross Racing Forged Piston (9:1)

Ross Racing Forged Pistons to suit RB30ET

These are a custom piston made by Ross for Spool Imports.

Pistons are available in:

• Compression Ratio: 9.0:1
• Bore Sizes: 86.5mm and 87mm
• 0.225” wall Carbon steel 
• Pistons come with rings, gudgeon pins and pin locks
• Forged 2618

Rated at 1000HP by Ross Racing.

Ross Racing Pistons:

All 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.

Available options

• Piston Diameter: +1mm / 87mm; +0.5mm / 86.5mm

Engine build fitment

RB30ET (SOHC). Match the selected dimensions, engine generation and rotating assembly specification before machining or assembly.

Installation and BBT workshop support

Confirm finished bore size, piston-to-wall clearance, compression height, pin specification, ring gaps and valve clearance against the supplied piston documentation.

Built by Boost & Tune is an authorised Spool Imports dealer and can assist with component selection, engine assembly and tuning requirements for your build.