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HKS COMPLETE ENGINES

COMPLETE ENGINE for RB26DETT 2.8L STEP2 Version2

* Intake manifold, turbine and other engine auxiliary parts are not included

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
HKS COMPLETE ENGINE

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