We start with a 260 Pum and build from there .
Add a +1mm stroke crankshaft .
Zenoah 26.3 marine motor - 29mm stroke x 34mm bore = 26.3cc
- 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
- Modify carb ./ 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 .
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