You guys are light years ahead than me on conversion engines, thus having more fun and for much longer than this pour soul. I need your help again, I came across these three engines, I don't know squat about how good they run, they were used professionally it seems as the units were very dirty and obviously used for a long time (they came from a repair shop).
The one on the left was on a weed eater, the one in the center was used in a chain saw and the one on the right hand side was used as a blower (I think I have the order OK).
The one on the left is a Snapper S31SST - Homelite Zip Starter Versa TLL 25 cc, the Blower was a Weed Eater brand, BlowerVac 960, no idea of its displacement or type of engine.
And I believe the one on the center was a Mc Culloch Mac 130 2 CID, is this around 32 cc?
Compression on these engines is not great, nothing compared to say a Zenoah or something like that, but then again I have some Quadras that feel soft, but run like real champs.
By the looks of it the one on the right will be very hard to use as there is no way to attach it to a mount, the other two can be mounted.
My question to you is do you feel these engines are worth converting or not, probably new rings would be mandatory, then adding mounts, maybe carburators, perhaps a muffler and prop adapters plus the material removal in order to lighten them up, I've no way of knowing if parts are available for them as they might be quite old.
Another question, which would be the top engines to be converted, I know the Ryobi 31 cc is great to work with, and I feel this displacement would probably be the smallest I would use as it doesn't make much sense considering the power to weight ratio, one would probably be better off with a strong glow engine, either a two or a four stroker.
Awaiting your great replies as always, thanks!