 This is the Ofna Jammin' .12 Rear Exhaust Off-Road Engine without Pull Starter. Ideal for the Ofna CRT.5 Mini Truggy.
Features
ABC construction three port liner, bushing equipped connecting rod Ball bearing-supported crankshaft Composite bodied Slide Valve Carburetor with Red silicone boot Red anodized aluminum cooling head SG type balanced crankshaft
Specifications
- Bore: .54" (13.80mm)
- Stroke: .55" (14mm)
- Displacement: .12 cu in (2.1cc)
- RPM: 29,000
- Claimed Horsepower: 1 HP
- Weight: 7.7oz (220g)
- Width between mounting holes same side: .43" (11mm)
- Width between mounting holes opposite side: 1.2" (32mm)
- Crankcase width below mounting tabs : .98" (25mm)
- Distance from coverplate to drive hub: 2.7" (69mm)
- Distance from coverplate to end of crankshaft: 3.2" (81mm)
- Height/bottom of crankcase to top of cylinder head: 3.5" (88mm)
- Height/bottom of mounting tabs to top of cyinder head: 2.9" (74mm)
Needle Settings
- Needle Valve: 3-3½ turns from closed
- Low Speed Needle: 5 turns out from closed
- Barrel Stop Screw: 1/16" gap to start new engine, open more for faster idle
Includes
Ofna Jammin' .12 Rear Exhaust Off-Road Engine, drive hub and parts list
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