Specs
Engine: 390cc OHV Clone 13HP
Recommended Class: Modified / Open
Target (MAX) RPM: 7500
Spring Pressure (In / Ex): 48-50 lbs Dual Spring
Valve Lash (In/Ex): .003"
Ignition Timining: Pump Gas Not Recommended
110 Octane 32 Deg BTDC
Methanol 36 Deg BTDC
Compression Ratio: 12.2 to 1
Profile
Intake Exhaust
Open: 42.0 BTDC 78.0 BBDC
Close: 83.5 ABDC 46.0 ATDC
Lift: .310" .310"
C/L: 108.0 ATDC 108.0 BTDC
DUR @ 50: 247.6 Deg 247.6 Deg