passes on motor
I would say I go around 300 passes a year. Usually freshen after 2 seasons. It doesnt hurt to do it every year, just insurance, but I have seen many rebuild and break a crank or something a week or two out. We just tore into a 540 that was ran for 2 seasons with 750+ passes and it still had the hone marks in the cylinders. Still ran the same et as it did when we put it in. Back springs off during the winter, check valves every 2 weeks, and I change oil every 2 weeks which is probably not necessary, but its a habit.