Should'nt be a problem if you know how to tune an engine. Start with a good engine that has an idle adjustment screw. An OS 46 would be great. The low end will have to be a little leaner than normal but by using the OS or other higher quality engine it should not have any adverse affects. I run a YS-45 inverted with no problems whatsoever. Try the K&B HP plug also! Just remember to hand turn the engine over before you put a starter to it to make sure you don't have hydraulic lock!