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ENGINE BLOCK COMPONENTS
Short Block Assembly
【SHORT BLOCK RB26 3.0L STEP3 (TRADE IN NEW BLOCK)】
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.
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Exclusive full counter crank
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Exclusive I-beam connecting rod with 36% increase in buckling strength and 6 mm longer shaft distance.
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Billet 2-piece piston
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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 | |
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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 |
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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 |