Started working on a Kioritz model HC2400 Type 2-E. I found that the threads on both ends of the crank are left handed.

Does this thing run clockwise or CCW?

My rough measurements show a bore of 34cm and a stroke of 2.5cm. I had thought that this was the great 23cc Kioritz engines but now I wonder? What have I got?

With a 34cm bore and a 2.5cm stroke it is a over square design? Over 13" bore?

Enjoy
Jim

Make that 3.4cm bore,,,,,,,,,,,, I was soooo close !!!!!!!!

Antique, your bore and stroke dimensions do indeed give a displacement of 23 cc.[sm=thumbup.gif]