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Spool 3RZ-FE Conrods and Ross Forged Pistons

SKU
Original price $1,139.00 - Original price $1,139.00
Original price
$1,139.00
$1,139.00 - $1,139.00
Current price $1,139.00
  • Spool Forged H Beam Conrods (ARP 2000 3/8 bolts)
  • Custom Ross Racing Forged Pistons (Rings, Pins and Locks)

Ross Racing Pistons feature:

These Pistons are custom made for Spool by Ross Racing Pistons.
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  • Compression Ratio:9.0:1
  • Bore Sizes: +0.5mm
  • Pistons come with Rings
  • 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

    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.