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DT125R FORUM

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  4. Engine break in after rebuild

Engine break in after rebuild

Scheduled Pinned Locked Moved Engine
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  • E Offline
    E Offline
    erionmustafa
    wrote on last edited by
    #1

    Hi i just did a top end on my 1997 dt125r i heard that you should take it slowly after rebuilding it not give it much gas and all that what should i do to be safer

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    • R Offline
      R Offline
      Rallyfinnen
      wrote on last edited by
      #2

      If it's a standard cylinder with iron sleeve it is more important to run in, a nicasil cylinder is not so critical. With iron sleeve, first do at least one heat cycle only idling. You can add an extra 1% oil to the fuel the first tank or so.

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      • CalumC Offline
        CalumC Offline
        Calum
        wrote on last edited by
        #3

        I think the main thing are the piston rings bedding in.

        I haven't worried about it too much. 50 miles if it's just a top end. But I am quite happy to rebuild the engine prematurely.

        Always Originate, Never Pirate!

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