HKS 21004-AN021 Capacity Upgrade Kit STEP-3 for NISSAN Sklyline GT-R (R32/R33/R34) RB26 2.8L
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This item is considered special order and is not available for immediate pickup or dispatch. Price and ETA may vary. Please note that no returns, cancellations, or refunds allowed on special orders.
Piston Kit + Connecting Rods + Crankshaft
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 |
High strength kit designed for high power
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
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
Connecting Rods
- H-beam machined by nickel chromium steel (SNCM)
- Compatible with φ22 piston pin
- Increase fatigue limit by WPC treatment
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 |