Bad Ass Mod Zenoah 300 PUM

We start with a 300 Pum and build from there .

Zenoah 300 PUM marine motor - 29mm stroke x 36mm bore = 29.5cc

• Modify the cylinder to get the correct head clearance .
• Relieve & modify the piston .
• Hand modify the exhaust / intake / & transfer ports .
• Hand check all components for straightness & proper tolerences .
• Hand fit & reassemble to our specs for your hull type .
• Install zero drag seals .
• HP bearings .
• Light flywheel .
• Modify carb ./ stainless throttle shaft / billet cover / needle clamp
• Billet isolator block .
• Stainless bolts .
• Install NGK sparkplug .
• Dyno-test .
• choice of carb - wt 257 / wt 1048

Please allow approximately 2 weeks build time .