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HKS COMPLETE ENGINES
* Intake manifold, turbine and other engine auxiliary parts are not included
【COMPLETE ENGINE for RB26DETT 2.8L STEP2 Version2】
Version 2 was released with an improved balance of intake and exhaust by adopting a big valve for the exhaust, and further improved intake and exhaust efficiency by optimizing the port profile and cutting the valve seat into an R shape to prevent delamination of the boundary layer.
- Professional staff assembles the proven 2.8L STEP2 kit
- CNC machined combustion chamber to decrease knocking
- High-Volume Oil Pump to ensure lubrication of the engine on a whole range of RPM
- Specially selected strengthened main bearings and connecting rod bearings
- Grommet Head Gasket and Strengthened Stud Bolts for improved sealing.
- High angle camshaft for improved high end performance
- Reinforced valve spring to suppress surging at high RPM
- Strengthened valve stem seals to maintain precise performance even at high RPM and high temperature
- Improves intake and exhaust efficiency by optimizing the exhaust side big valves and port shape, and also measures against overheating with the sodium-filled valve.
- Reinforced valve stem springs and titanium retainers are installed to suppress surging at high RPM.
- Features separator to shuts out oil that flows out with blow-by gas from the cam cover.
2.8L STEP2 KIT. forged piston, billet H-beam connecting rod and forged crankshaft
High-volume oil pump
High angle camshaft for improved high end performance
Slide cam pulley
Titanium made valve spring retainer
Special cam cover baffle plate to efficiently extract the oil out of the blow-by gases
Combustion chamber was CNC machined to optimal shape to decrease knocking
For further efficiency, R-shaped valve seats are adopted
Ports are machined into a shape that smoothly connects to those valve seats
A sodium-filled big exhaust valve to prevent overheating of the valves and improve ventilation performance
Specifications
| HKS 2.8L KIT | Stock | |
|---|---|---|
| Bore | 87.0mm | 86.0mm |
| Stroke | 77.7mm | 73.7mm |
| Compression (t=1.2) | 8.6 | - |
| Max RPM | 9,000rpm | 7,600rpm |
| Displacement | 2,771cc | 2,568cc |
COMPLETE ENGINE RB26 2.8L STEP2
| Camshaft STEP2 | HKS IN: 264°／ LIFT 10mm |
|---|---|
| HKS EX: 264°／ LIFT 10mm | |
| Blow-by separator | IN : Stock |
| EX : HKS Strengthened | |
| Cam Pulley | HKS SLIDE CAM-PULLEY |
| Timing Belt | HKS Fine Tune Timing Belt |
| Spring Retainer | HKS Titanium |
| Valve Spring | HKS Strengthened |
| Engine Head Modifications | Machining of combustion chamber (Version 2 spec) |
| Full surface machining of ports and R-machined valve seats | |
| Optimizing cam clearance | |
| Drilling of water jacket air vent hole | |
| Stem Seal | HKS Strengthened |
| Valve | IN: Stock EX: +1 mm Sodium filled-Inconel |
| Port | Smoothing and polishing around the seat |
| Combustion Chamber | CNC machined combustion chamber (Squish area retained) |
| Head Gasket | HKS Grommet S-Cooling gasket (t=1.2) Code No. 23002-AN002 |
| Head Bolt | HKS Strengthened Bolt |
| Block（24U） Modifications |
|
| Surface resharpening (parallelism correction with main journal) |
|
| Modification on the water hole | |
| Machining on the water-jacket | |
| Removing edges on the bottom of cylinders | |
| Cylinder boring process | |
| Oil Pump | HKS High Volume Oil Pump |
| Piston | HKS Forged |
| Conrod | HKS H-Beam |
| Crankshaft | HKS Forged |
| Main Bearing | ACL |
| Conrod Bearing | ACL |
| Cover | High Temp Paint |