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  1. ct70H engine build

    Project Builds Showcase
    Hey all another topic im sure someone has already done one on this but i have searched high and low and found nothing to help me. So im going to start racing i purchased a 1972 ct70h engine for my builder so i could leave my stock engine as is. So my question is how to build a 108cc engine...
  2. mods for 1975 z50

    General Mini Chat
    hey there was wondering if anyone has ever done an 88cc bigbore kit on a early 70s honda z50 if so are there clearance issues with the new carburator being too tall and hitting the gas tank?
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