Ready To Break In But..........

[LIsurfer_]

I am putting the top end back together tomorrow and have searched for a good break in procedure. I plan on doing the heat cycles and short rides at 1/4 1/2 3/4 throttle to be sure everything seats properly. During the rebuild I acquired some pipes, and am now worried about my jetting as I will not be able to do a plug chop for the first few rides. I have a .20 over stock motor, Toomey 2 into 1 air filter with outerwear, and now FMF Fatties. My current jetting is 290 mains 30 pilots and Dyno Jet needles 3rd clip. Am I ok to run this jetting for break in? Thx

[pimp559]

You'll be fine with those jets. You should run the oil a little rich on the first half tank. Let us no how shee does.

[SDD]

I mix my oil at the usual ratio but put in a richer main jet. If you add more oil to the gas you lean the amount of fuel going to the combustion process. You want it to have a little extra oil to help wear things in properly but not at the cost of leaning it out and causing heat. I would put in a 320 main for the first tank of gas then rejet to what the machine should be running.

[MotulMonsta]

I'll jet super rich, run a mix of 16:1 with the choke on and idle it for 2 min. then let it cool down and idle again for 2 min...cool down then idle and putt around for 10 min...cool down keep up the pattern until those 2 gallons of 16:1 are down then mix more 16:1 and this time putt it around without the choke never going over 1/4 throttle. After that I run a race mix of 32:1 and putt it around not going over 1/2 throttle after those 2 gallons mix me up some more and just ride it easy for a day then hammer the shit out of it. Then re-jet for optimal performance. The key is to get those rings to seat, you give it too much juice too soon, you'll snag a ring and ruin your day. I usualy take 3 days to break a motor in..then after that it's race time. My motors are good for years..I had one last me 4 years and it still was making damn good power.