jzeiler· Wrencher Extraordinaire
Often these engines were run on cheap regular fuel and, since there is no knock detector on the LT, they suffer damage to the piston ring lands from detonation. This leads to broken rings and scored cylinder walls. I have changed out three engines with damage like this (none were my bike) from other riders. Most were in the 40-80,000 mile range. Since on a used engine you have no way of knowing how it was run I would at least get one of the cheap bore scopes out there to look in each cylinder to look for scoring. Always run premium fuel in the LT.