I have aquired a Kioritz engine from a model PB-9 blower. Code on the engine is DM-9. Would anyone know what size this is? Thank You, Terry

Several years ago I came across a cache (25) of Kioritz blower engines. They had left hand threads on on the crank and were the 23.6cc engine. I don't remember the numbers?

It's a 40cc. An old one as it has points. (Doesn't mean it's no good, just an older model.)

Here's a link: http://www.echo-usa.com/Support-Help/FAQs

Another way to find the displacement of an engine is to just measure it. Then use this formula: (bore x bore) x stroke x .7854 = displacement.

AV8TOR

Thanks for the info. I would like to convert it to electronic ignition. This is my first gas engine. I would like to put it in a super decathalon, may be a little big for it. My dad always said if a little bit is good a little more is better.

AV8TOR, was that the same engine I sold you(new) so you could build a twin? I bought 4...have one left someplace !!

No. The ones we used for the twins was the 23.6cc Echo/Kioritz. One could make that twin out of 21's, 23.6's, or 23.6's with a 25cc crank for a "stroker motor". I built them every which way for myself and customers. I have one made with the 23.6cc engines on my Giant Stik, and one made with 23.6cc pistons/cylinders and a 25cc crank all done and test run, waiting for an appropriate airplane. Very cool little engines.

AV8TOR