STEP1
Features The intake cam side of the RB26DETT is changed to allow variable valve timing. The cam has duration of 248° which seem a little conservative. However, with the variable timing, power increases can be found at low or high RPM Whether you are looking to find some time on the circuit through improve acceleration out of lower speed corners, or simply want something which can overtake with ease on the street, the HKS V Cam System provides good power from low RPM reducing the necessity for excessive gear changes. This especially noticeable when going from vacuum to boost to give the feeling of increased displacement. Improved valve timing will allow for more complete combustion leading to improved fuel efficiency and cleaner exhaust emissions. HKS V CAM System is compatible with the stock pistons. (When using with the thinner head gaskets or modified cylinder head, the clearance between valve and piston may be insufficient.) Exhaust cam should be selected dependant on turbo choice. (Recommended: GT-SS-256°, GT2530-264°)
Test vehicle specification
Engine: RB26DETT(EX-side 256°)
Turbine: GT2530 x 2
Intake: Super Power Flow, Airflow-less
Exhaust: HKS Metal CAT, Legal Muffler
Cooling: Intercooler & Piping Upgraded
Fuel: Upgraded Pump (280R/h), I/J 600cc
Engine Management: F-CON V Pro (D-jetro), EVC
Complete Parts
Required Parts
VALCON TYPE-RB26 Exhaust Camshaft
STEP 1 - Recommended : GT-SS/STEP1 256° GT2530/STEP1 264°
STEP 2 - Recommended : STEP1 272°
STEP Pro - Recommended : STEP2 272° or above
Valve Spring
STEP 2 - HKS Uprated Valve springs (for increasing maximum RPM, Sold separately)
STEP Pro - HKS Uprated Valve springs required (Sold separately)
Piston
STEP 1 - Stock
STEP 2, Pro - HKS Piston for valve⇔Piston Clearance
Oil Pump
HKS Oil Pump recommended
Head Modification
STEP Pro required some machining to allow for cam lobe movement
Precautions for Use
【Maximum RPM】
STEP 1 - 8,000rpm (Stock Rev Limiter)
STEP 2 - 8,000rpm (With Stock Valve Springs) 8,500rpm (With HKS Valve springs, Sold separately) STEP Pro - 8,800rpm (With HKS Valve springs, Sold separately)
【Oil Temperature, Water Temperature】
If oil viscosity is low, oil pressure may not reach adequate levels resulting in valve timing not reaching desired values. Valve timing will not increase when water temperature is under 60°C
【Recommended Oil】
SUPER OIL (RB), Racing Pro Oil 10W-50
【Timing Belt】
Check every 10,000km for wear and tension. Adjust or replace if necessary.