Originally Posted by D C
If you're doing a rebuild and can replace the worn bushing, what is gained by spending a LOT more on a new engine?
A 3 year warranty. A new starter motor. A new carb with all new linkages and no wear on the shafts or body. I would hope the engine rebuilder would be installing new valves and cutting the seats but who knows...so a new engine would have all of that new.
Also the newer engines have a better system of oiling that upper bushing that seems to be a problem in the older ones where they oiled it through the crankshaft instead of through the block as on the newer versions.