Ok here we go! My big block Tecumseh (138cc) arrived today. Got very disappointed at the initial weight of 24.2lbs! After breaking it down I'm rather happy with a weight of 9lbs!! I still have to remove more metal and the back chunk of shaft, this should be good for another 1 to 1.5lbs. Hopefully this will put me at my target weight of 8lbs bare, not to bad for a brand new engine of 138cc and a price of $100 shipped. Anybody up for the challenge to make a prop hub?