Hello All. I was wondering if anybody has converted the engine from a Troy Bilt trimmer or blower. They have a 29cc trimmer engine, and a 32cc blower. These don't appear to be Ryobi engines, as they don't have the weird angled sump design. On the trimmer, the oil fill cap is on the back of the crankcase. Also, the cylinder is held onto the block by bolts rather than being an integral part of the block casting like the Honda engines, raising possibilities of machining a custom block and building multi-cylinder versions. Being a fan of 4-cycle conversions that don't have their oil mixed with the fuel, I was hoping that it might be a worthwhile conversion. If anybody has done one, what kind of thrust and RPM did you get? Thanks.

Charlie

I have several Ryobi 4 strokes. One of them has a cylindrical crankcase with the drain at the back. The other two have the odd angled case, one made of aluminum and one made of plastic. I am also interested in the other 4 stroke engines. How about some pictures of your Troy Built? Thanks.

Richard/Club Saito #635

Couple people on YT have done it, here's one.... http://www.youtube.com/watch?v=2aNPMWX2eAY However, it seems like these are heavy engines, and wouldn't really be a good candidate for an airplane engine.