flyjoe540,
I ran it as a weedwacker for 1 tank full of fuel, 3/4 at full throttle and 1/4 at an idle before I started converting it. I used www.wackerengines.com conversion kit with his home made muffler also, maybe the muffler might of increased my rpms some also being it wasn't the stock. I will have pix up tonight when I get home from work.

Like I said before, I don't have too much knowledge yet with these conversions and the mods that can be made to these engines but I am also having a ball with it. I am a HANDS ON kind of guy and I love taking things apart and putting them back together and finding out that it still works, maybe better... It is great. I am definitely going to keep up with this post as I have been learning a lot.

BY THE WAY: Does anyone need any McCulloch 31cc weedwacker parts minus the engine?