STEP2
Features Specially designed cam for Step 2 has duration of 264°, valve lift 8.7mm. Acceleration at high rpm is smoother than solid Step 1 camshaft (272IN-272EX). Step 2 is suited to higher power output at all range of engine rpm. Strength is enhanced when used with upgraded Valve Springs at high RPM (recommended limit 8500rpm). Engine output and torque are substantially improved at all engine RPM range compared to solid Step 1 (272IN/EX). Step 2 was designed to show significant power and torque improvement for vehicles tuned to output 600ps or higher compared to old type Step 1 type B (256EX).
Test vehicle specification
Engine: HKS 2.8LKIT STEP1 φ87
Intake: HKS Racing Suction Reloaded Intake Kit
Head Gasket: HKS Head Gasket 1.2mm
V Cam Control: VALCON TYPE-RB26
Fuel: HKS Fuel Delivery Kit
Fuel: HKS 1000cc Injectors
Turbine: HKS GT2530KAI x 2
Oters: HKS Head Bolts, HKS Spark Plug M45
* Boost Pressure - 150kPa
* This result on the graph below is obtained by in-house engine bench test. The result may vary depending on measuring instruments
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.