New thumper break in..

This one has been hashed out before. I can't remember what the thread was called. I bet it's been a year or so since it was up here. If I remember correctly, this method would work OK.

For the record, whatever that's worth, for break in, I ran easy for about 30-45 minutes, then tossed the stock oil filter and all its metal shavings into the trash, changed the oil and pulled the frame strainer screen (it was clean). I probably change my oil after every 1.5-2 tanks of gas. I pull and clean the oil filter every other oil change. Might seem overkill, but something just draws me in to do it that often. Must be the force of the dark side... I've been running Yamalube 4 (mineral) since day one.

I do exactlly what Lou does.It is not overkill,but preventative mainainence.

One thing to remember is Pat's advice is mostly for race/high performance rebuilds, not new bikes where ther's more at stake than just ring seal. I've been to his his "shop", seen his work, and seen the results. He's a no-nonesense kinda guy while won't bull*hit you. I've asked him about his breakin and porting stuff when I was rebuilding my GPz. He told me to just go ahead and clean up the casting flash cuz smaller ports didn' t help on the KZ's he worked on.

What he doesn't mention is how much development time he puts into all his stuff. He practices what he preaches.

I used to work for a major small engine manufacturer dynoing engines, breakin was simple, 5 minute idle, 5 min high speed no load, 1/2 load for 1/2 hour, calibrate the dyno, stabilize oil temp(usually 15 minutes or so) and it's broken in.