thats crazy if you could get a 3.125 bore in one of these blocks.
just measured a small bore(172cc) block and they still carry the same outer casting and bolt pattern as a 195cc block. i just don't see how you would of got that big of a bore. it almost looks like you would run into the threaded bolt area and maybe the outside casting.
tecumseh power nice.........:thumbsup:
i had fun with the honda's and clones last year:thumbsup:
not sure you went back far enough to see my video posted of my drag minibike. we run 125ft on clay....
bike is so loud i need ear plugs when tuning it....:doah:
https://youtu.be/Ue-4HkKUTNE