got a cam and piston how do i break my motor in on my 400ex
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i just got a xr 400 cam and a 10:1 piston and i wanted to know how i break my motor in and what the prodcedure is on how to do it it seems everyone has a differnt idea and i dont know what to do it already has a fmf pipe and silencer and a quicksilver carb just need to know how to do it any help would be great thanxx
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phaskell,
I would run 1 to 2 tanks of gas through it before I really ran it hard. I wouldn't rev it out too much in a gear, or hold it wide open for more than two or three seconds. You migth get away with more, but don't run your 400EX wide open all day. You should also change the oil after a few rides.
That's the best I can tell you. I suggest that you ask someone very knowledgeable such as Pam or Gabe on this forum. They can probably offer more than I can. Good luck with your break in.
I would run 1 to 2 tanks of gas through it before I really ran it hard. I wouldn't rev it out too much in a gear, or hold it wide open for more than two or three seconds. You migth get away with more, but don't run your 400EX wide open all day. You should also change the oil after a few rides.
That's the best I can tell you. I suggest that you ask someone very knowledgeable such as Pam or Gabe on this forum. They can probably offer more than I can. Good luck with your break in.
#7
I can not see you dudes wasting time and money installing a xr cam.I put all around cams in from WB & Web with no problems,no heavy valve springs,no harden rockers.Bin racing MX & Hare Scrambles for 6 mouths,adj valves twice.No problems yet.(Brake in for cam,do not let it run under 2000 rpms for 30 min).Start it,let get hot(not over heat),let cool down.Do that for the 30 min,drain your oil & filter.Add new oil and filter and go riding,easy for 8 to 10 hours.Have fun and GOOD LUCK
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<< i just got a xr 400 cam and a 10:1 piston and i wanted to know how i break my motor in and what the prodcedure is on how to do it it seems everyone has a differnt idea and i dont know what to do it already has a fmf pipe and silencer and a quicksilver carb just need to know how to do it any help would be great thanxx >>
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