96shee84z28 Posted February 13, 2004 Report Posted February 13, 2004 hey guys i just rebulit my top and bottom end. whats the best way to break it in?? Quote
frocashmoney24 Posted February 13, 2004 Report Posted February 13, 2004 just start it give it a lil extra warm up time, then just ride it like you normally do, on and off the gas, stay away from WOT for long periods of time Quote
Skiddz Posted February 16, 2004 Report Posted February 16, 2004 This is *MY* method and it has served me well. I'm sure everyone has they're own ways, but this method has worked for me and many buddies I've done top-ends for. Jet the thing how you'd ride it and fill it up with the same pre-mix ratio you'd normally use. Fire it up and let it warm up. Let it run for about 15 mins, blipping the throttle on occasion to keep plugs from fouling. Shut it down and let it cool completely. Do the above again. Fire it up and take it for a 20 minute spin, using no more than 1/3 throttle and running it up and down through the gears. Let it cool completely. Do as above, but this time to 1/2 throttle. Let it cool completely. Take one more spin with occasional bursts to WOT. Do not cruise at one throttle setting. Varying the throttle will seat the rings better.. Let it cool, check plugs for proper jetting then go ride. I usually take it easy on the 1st tank or two. By the 3rd tank, I'm back to normal. Again, this method works for me and my last engine ran for 6 hard seasons at Glamis before I grenaded it this past October. I'll certianly be doing the same with the new motor when my full rebuild is complete. One more note. Anyone running forged pistons (I.e Wiesco, Vitos etc..) make sure you give the engine enough time to warm up before you ride.. I've seen a lot of cold-siezes due do the expansion differences in the pistons and the jugs. 5 more mins warm-up, could save you $500.. Quote
bpreuss Posted February 16, 2004 Report Posted February 16, 2004 that kind of sounds like duncans break in procedure. thats what i follow Quote
Phast Posted February 17, 2004 Report Posted February 17, 2004 I do the same thing as skiddz! Has never let me down. Quote
screamin'twin Posted February 17, 2004 Report Posted February 17, 2004 when i break a top end in i always use a conventional 2-stroke oil like the yamalube from yamaha, the higher synthetic performance oils like klotz, MC-1, Maxima, and those tend to be to "slippery" and dont allow the engine to break in right. Quote
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