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Bad Ass Mod Zenoah 300 PUM

This our new BA modified Zenoah 300 big block marine motor .
Manufacturer part number: MRCM -300PUM-BA
Manufacturers: MRCM , Zenoah
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    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 .

    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 .

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