Re: How many engines
I am on my motor number 5, but only cause I love em' (3 running and 2 being built).
My motors don't do that many miles, but I use them hard.
Only thing that has stopped any of them is the Mag coil (get a spare). and a seal went on an old motor that I didn't build, but there was nothing else wrong with the old girl.
However, I do recommend going over the motor properly before running it if your going the EBay way.