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ENGINE BLOCK COMPONENTS
【Capacity Upgrade Kit
RB26DETT 2.8L STEP3】
Ultra high durable capacity upgrade kit for high performance tuning.
Specifications
| HKS 2.8L KIT | Stock | |
|---|---|---|
| Bore | 87.0mm | 86.0mm |
| Stroke | 77.7mm | 73.7mm |
| Comp. ratio (t=1.2) | 8.7 | - |
| Allowable RPM | 9,000rpm | 7,600rpm |
| Displacement | 2,771cc | 2,568cc |
Features
High strength kit designed for high power
(1) Piston Kit Piston weight:324g
- Made from highly heat-resistant A2628 alloy
- Machined for the ultimate lightweight
- Bridge Structure for improved strength
- Double-layer MOLYBDEN coating reduce friction and improve initial fit-in
- Shorter piston pins decrease weight of bore
- φ22 piston pins increase flexural rigidity
- Weight is same as previous φ21 piston pins
(2) Crankshaft Stroke 77.7mm
- Machined full counter crankshaft
- Perfect balanced full counterweights for reducing impact on main journal bearings
- For a strong durability in highest power output, surface strength is increased by "Ion Plasma Nitriding" steel
(3) Connecting Rods
- H-beam machined by nickel chromium steel (SNCM)
- Compatible with φ22 piston pin
- Increase fatigue limit by WPC treatment
High-rigidity lightweight billet piston made from highly heat-resistant A2628 alloy
Ultimate crankshaft for best performance and durability
Lightweight pin enlarged to φ22 to cope with high combustion pressure
CAPACITY UPGRADE KIT RB26 2.8L LINEUP
| STEP ZERO | STEP 1 | STEP 2 | 【NEW】STEP 3 | 【NEW】HIGH RESPONSE | |
|---|---|---|---|---|---|
| Concept & Target | ●Capacity upgrade in engine O/H ●Mainly driving in street ●Improve response at an affordable price |
●Improve torque & power by capacity and turbo upgrade ●Increase allowable RPM by high lift camshaft |
●Increase more power by big turbo without losing response ●Increase allowable RPM by high lift camshaft ●Mainly for track race |
●Next stage of STEP2 in high power and response ●Latest technology for ultimate performance |
●Ultimate response with new designed ultra lightweight components ●Latest technology for ultimate performance |
| Recommend Turbo | Stock・GTIII-SS | GTIII-SS・GTIII-2530 | GTIII-RS・GTIII-4R | GTIII-5R | GTIII-2530 |
| Allowable RPM | 8000rpm | 8500rpm | 9000rpm | 9000rpm | 9000rpm |
| Comp. ratio (t=1.2) | 8.7 | 8.7 | 8.7 | 8.7 | 8.7 |
| Max power (approx.) | 550PS | 600PS | 800PS | 900PS | 700PS |
| Piston | Forged φ86.5 or 87 - 21pin | Forged φ86.5 or 87 - 21pin | Forged φ87 - 21pin ・Nickel plating ・OBER coating |
A2618 alloy billet φ87 - 22pin ・Bridge Structure ・Double-layer MOLYBDEN coating |
A2618 alloy billet φ87 - 22pin ・Bridge Structure ・Double-layer MOLYBDEN coating |
| Piston Weight | 401g | 401g | 401g | 324g | 324g |
| Piston Pin | φ21 (105.2g) | φ21 (105.2g) | φ21 (105.2g) | φ22 (97g) | φ22 (97g) |
| Connecting Rod | HKS Forged billet H-beam φ2 (SCM) |
HKS Forged billet H-beam φ21 (SCM) |
HKS Forged billet H-beam φ21 (SNCM) |
HKS Forged billet H-beam φ22 (SNCM) |
HKS Forged billet H-beam φ22 (SNCM) |
| Crankshaft | Forged lightweight full counter (20.1kg) |
Forged full counter (24.4kg) |
Forged full counter (22.9kg) |
Billet full counter (20.6kg) |
Billet full counter (19.3kg) |
| Moment of inertia Ratio （to STEP ZERO) |
100% | 132% | 119% | 113% | 102% |
| Allowable Torque | 55 kgf･m | 60 kgf･m | 80 kgf･m | 120 kgf･m | 70 kgf･m |
HKS offers a wide variation of products. Please choose the most suitable kit according to your purpose and budget.