DYNOPOPEN-390
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.
SPECIFICATIONS
· 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
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.
|
*As this is a special order item, please allow 5-10 days before shipping.
