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DT125R FORUM

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Engine differences dtr dtre

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  • 2 Offline
    2 Offline
    2strokechaz
    wrote on last edited by
    #1

    Could anyone tell me the differences between the engines of the dtr and dtre apart from the electric start and do the different years of dtr have different engines cheers

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    • CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #2

      Very early DTR models, 88 I believe, ran a slightly bigger bore cylinder, coded 3BN.

      Many DTRs ran a restricted 3BN head.

      DTREs ran 3MB head & barrels.

      The RE engine ran a different crank, stator and fly wheel cover.

      Early DTRs had a different oil pump.

      Always Originate, Never Pirate!

      S 1 Reply Last reply
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      • CalumC Calum

        Very early DTR models, 88 I believe, ran a slightly bigger bore cylinder, coded 3BN.

        Many DTRs ran a restricted 3BN head.

        DTREs ran 3MB head & barrels.

        The RE engine ran a different crank, stator and fly wheel cover.

        Early DTRs had a different oil pump.

        S Offline
        S Offline
        SpookDog
        wrote on last edited by
        #3

        Some 3bn engines have slightly different inlets, not where the manifold bolts on but inside. The internals have different dimensions that I can only guess is supposed to help flow to the ports...

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