Generally a "B" gearbox is used for the 447..... If you buy an engine without a gearbox, you really need to check to see if it's a "-8" engine. It will have 8 holes in the crankcase for mounting the gearbox, surrounding the crankshaft. There should be a picture around here somewhere.
Some have used belt redrives, but you still need a way of mounting the redrive. |