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ENGINE BLOCK COMPONENTS
【Capacity Upgrade Kit
RB26 2.8L φ86.5 STEP2 BCD】
Based on the 2.8L STEP 2 kit and upgraded with lightweight, high-rigidity forged "BCD" pistons.
Specification
| HKS 2.8L KIT | Stock | |
|---|---|---|
| Bore | 86.5mm | 86.0mm |
| Stroke | 77.7mm | 73.7mm |
| Compression Ratio (t=1.2) | 8.7 | - |
| Allowable rotating speed | 9,000rpm | 7,600rpm |
| Displacement | 2,740cc | 2,568cc |
Features
(1) Piston Kit
- It achieves a thin wall by employing the A2618 alloy, which is resistant to high temperatures.
- We have increased rigidity structurally by adopting a bridge structure.
- Profile optimization has shortened the Piston skirt height and reduced weight.
- Short piston pit with the lightweight boss part.
- Friction is reduced with a two-layer coating of fluorocarbon resin and molybdenum.
High rigidity lightweight piston adopting the bridge structure.
Improving antiknock property by using nickel plating on the top surface.
(2) Crankshaft stroke 77.7 mm
- The exclusive material is used, and adopting a full counter provides a good rotation balance and makes it possible for high rotation.
- The response improves by reducing the weight of the pin journal and the center part.
Lightweight crankshaft with exclusive forged material.
(3) Connecting Rod
- Exclusive forged material is used. An H-beam is adapted to withstand a powerful explosion load. WPC treatment is applied to the surface to improve fatigue strength.
H-beam connecting rod with exclusive forged material.