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Camshaft, Dyno Cams P-Open, GX390 and 13/15hp Chinese OHV
Camshaft, Dyno Cams P-Open, GX390 and 13/15hp Chinese OHV


 
Our Price: $129.99

Stock Status:In Stock
Part #: DYNOPOPEN-390
Qty:

Description -
 

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. A 33mm or larger carb is recommended. The lobes are welded to increase durability, extending the life of this cam.

Dual springs required.

The lobes are welded to increase durability, extending the life of this cam.

Specs

· Engine: 390cc Honda GX390, 420cc Predators, & 13/15 hp Chinese OHV

· Recommended Class: Modified / Open

· Target (MAX) RPM: 8000+

· Spring Pressure (In / Ex): 65 lbs 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

Profile

Intake

Exhaust

Open:

71 BTDC

89 BBDC

Close:

88 ABDC

50 ATDC

Lift:

.363"

.367"

C/L:

106.0 ATDC

110 BTDC

DUR @ 50:

263 Deg

269 Deg



Special Order. Allow 5 to 10 days to ship.


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