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ENGINE BLOCK COMPONENTS

SHORT BLOCK RB26 3.0L STEP3 (TRADE IN NEW BLOCK)

Short Block Assembly

Newly developed 2-piece piston achieves increased stroke and connecting rod length while maintaining the same block height. It is now possible to manufacture the product by accepting a new 24U block, previously owned by the customer.

  • The exclusive 3.0L crank is machined from high-end race grade nitride steel that is ion plasma treated to increase surface strength and toughness.
  • A dedicated I-beam connecting rod has been adopted to increase buckling strength by 36%, in preparation for higher torque. The piston pin thickness has also been increased by 22mm.
  • Various design changes were made to countermeasure against heat generated during higher output, such as, changes to valve guide and seat materials, adoption of sodium-filled EX valves, and pistons with cooling channels.
  • Dedicated 36-tooth crank angle sensor and crank angle sensor for V-cam improve signal accuracy in the high-RPM range.

  • Exclusive full counter crank

  • Exclusive I-beam connecting rod with 36% increase in buckling strength and 6 mm longer shaft distance.

  • Billet 2-piece piston

  • The two-piece piston has a higher pin position making it possible to reduce the compression height. The extremely lightweight 313 g pistons, which have cooling channels for oil cooling.

Specifications

  HKS 3.0L Stock
Bore 87.0mm 86.0mm
Stroke 84.0mm 73.7mm

Compression Ratio (t=1.2)

 8.7 -
Max RPM 9,000rpm 7,600rpm
Displacement 2,996cc 2,568cc

SHORT BLOCK RB26 3.0L STEP3 (TRADE IN NEW BLOCK)

Block (24U)
Modifications		 Block deck Resurfacing (Parallel to the crankshaft),
Waterhole Machining,
Head bolt hole chamfering (to prevent cracking),
Deburring lower end of cylinder, Boring
Piston HKS 2-piece machined
Piston Pin Dia. 22 Enhanced product
Connecting Rod HKS I-Beam Center Distance: 127.5 mm
Crankshaft HKS Billet Full Counter
(Ion plasma treated nitriding steel)
Main Bearing ACL
Conrod Bearing ACL
SHORT BLOCK

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