Roscoe,
Well, my motor lasted three full seasons plus however long it was run before I bought it. Failures do happen when you run a motor consistently at 7K RPMs. So I can't complain about that.
Bill's failure was a little more catastrophic. I did not
oil down the track. I think the crank either had some kind of crack in it already or maybe it wasn't getting enough
oil. It just broke and died, it had been running really well before that. I was running some of my best speeds yet at around 145 MPH on the back straight.
These are things that just happen with consistent use at high RPMs. Nothing out of the ordinary.