the old one is not rebuildable. a thrown rod on any small engine typically causes more damage than it is worth.
In the 100's of engines that I have rebuilt over the years I have replaced 2 CRANKS. I almost NEVER use used rods unless the rod is NLA, they are replaced with NEW. The $80 was NEW PARTS, what the op would expect it to cost him if he did the work himself.i have rebuilt less than 20 small engines per year. :crybaby:
yes, sometimes they can be rebuilt on the cheap, especially if you happen to have cranks and rods sitting around your shop. however, if you don't happen to have a bunch of 8 hp briggs (which the op does not) and have to take it to a repair shop, they will charge you for the cranks and rods and block if needed. when you add in labor, the bill is much more than $80 (that is cost eddie, not bill for the op... if you have a successful business than you should know the difference).... :thanku: