Dyno Cams P-Open Grind, Welded Lobe, Clone 13 HP

Cams  

The P-Open is intended for a full tilt modified or open class. This cam offers larger duration with a lower lift. Upgraded valve springs, billet rod, and billet flywheel are mandatory. Dual springs required. A 33mm or larger carb is recommended. The lobes are welded to increase durability, extending the life of this cam.

• Engine: 390cc Honda GX390, 420cc Predators, & 13/15hp Chinese OHV
• Recommended Class: Modified / Open
• Target (MAX.) RPM: 8000+
• Spring Pressure (In / Ex): 65lbs dual spring
• Valve Lash (In/Ex): .003"
• Ignition Timing: 110 Octane 34 Deg. BTDC, Methanol 38 Deg. BTDC
• Compression Ratio: 12.5-to-1 or higher

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