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 .
