Hi,

I have one of these. I was told it was 36cc; never bothered to check. Let me know how yours turns out. Then maybe I'll dig mine out and give it a whirl. You might be able to cut the crankshaft off inside that seal, then block off where the seal was. Save a few ounces. Zagnut (I believe) has done this with the Kioritz engine he was working with. I'm going to do it to mine if/when I take it off the plane again.

Good luck,
Av8tor