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  4. DTR ENGINE IN DTX FRAME

DTR ENGINE IN DTX FRAME

Scheduled Pinned Locked Moved DTX
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  • H Offline
    H Offline
    hrozewic
    wrote on last edited by
    #1

    Currently have a DTR engine being built to replace my shot dtx engine. I know these engines have different stators, how would I connect the dtr stator to my dtx loom? My first post in the forum and am very thankful for any advice that you guys can share with me

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    0
    • CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #2

      The stator/pickup and CDI and potentially the YPVS differ.

      You also have no stator motor on the DTR engine.

      If it were me, I'd place a DTRE crank, flywheel and stator into that DTR bottom end, the cases are identical. That way you won't need to swap the electrics over making it easy to revert the old engine back.

      https://www.ebay.co.uk/itm/266772107905?_ul=GB&var=0

      https://www.ebay.co.uk/itm/266848784235?itmmeta=01J1QTBT82YNBQT2ZFGYJ6KZHX&hash=item3e216d4f6b:g:wM4AAOSwNTtkYRXb&itmprp=enc%3AAQAJAAAA8K7YZpbjCnomv5gBRLuMTifWfxIUdIDxt1F%2FlnAc161DH99B1rZlUJ3hv3A9culpibAQ%2B%2FFcvJUTzfRvkLJX%2F5A1KRxoIEjJP0SnB8OhpAVpqLWIS2uYvlm4E5px9ZIIWDn6bEew%2BqTgDYPJo0eSXJrDg37Xo89QSiyC27ELTt7dDTCGoDqAcW8Jk5b7wE5cMHxe3x%2FpRadFg%2BrYEgAucHAtZfEd3xD2sL6X1V3FKjt5GBu%2F3HoX9fmYGhxmjfEF4Q9kX6YopOF2vA9BcQ4re7NqbUaNG7pQCFLhzs4uvWkg6ifXuh3%2BEbjZUxH8BLqRBw%3D%3D|tkp%3ABFBMlqSv-o1k

      And build the DTR engine up that way.

      Atlhough to be fair, it doesn't take very long to strip and build DTRE engine.

      Always Originate, Never Pirate!

      H 1 Reply Last reply
      0
      • CalumC Calum

        The stator/pickup and CDI and potentially the YPVS differ.

        You also have no stator motor on the DTR engine.

        If it were me, I'd place a DTRE crank, flywheel and stator into that DTR bottom end, the cases are identical. That way you won't need to swap the electrics over making it easy to revert the old engine back.

        https://www.ebay.co.uk/itm/266772107905?_ul=GB&var=0

        https://www.ebay.co.uk/itm/266848784235?itmmeta=01J1QTBT82YNBQT2ZFGYJ6KZHX&hash=item3e216d4f6b:g:wM4AAOSwNTtkYRXb&itmprp=enc%3AAQAJAAAA8K7YZpbjCnomv5gBRLuMTifWfxIUdIDxt1F%2FlnAc161DH99B1rZlUJ3hv3A9culpibAQ%2B%2FFcvJUTzfRvkLJX%2F5A1KRxoIEjJP0SnB8OhpAVpqLWIS2uYvlm4E5px9ZIIWDn6bEew%2BqTgDYPJo0eSXJrDg37Xo89QSiyC27ELTt7dDTCGoDqAcW8Jk5b7wE5cMHxe3x%2FpRadFg%2BrYEgAucHAtZfEd3xD2sL6X1V3FKjt5GBu%2F3HoX9fmYGhxmjfEF4Q9kX6YopOF2vA9BcQ4re7NqbUaNG7pQCFLhzs4uvWkg6ifXuh3%2BEbjZUxH8BLqRBw%3D%3D|tkp%3ABFBMlqSv-o1k

        And build the DTR engine up that way.

        Atlhough to be fair, it doesn't take very long to strip and build DTRE engine.

        H Offline
        H Offline
        hrozewic
        wrote on last edited by hrozewic
        #3

        @Calum I appreciate that would be the best solution but I've already went ahead and got a DTR crank built with fresh bearings seals and gaskets, just waiting for the head back from porting and polishing. On a bit of a budget, is there no way this could be done?

        Also to clarify I'll be using original dtx ypvs and cdi. Just looking to charge the battery and run the bike surely this is possible?

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        • CalumC Offline
          CalumC Offline
          Calum
          wrote on last edited by
          #4

          The bearings are the same, as I say, crankcases are very similar so bearings etc you're laughing. Just the things I mentioned differ. So if you can grab your old crankshaft/stator/gen you'll be golden!

          Always Originate, Never Pirate!

          H 1 Reply Last reply
          0
          • CalumC Calum

            The bearings are the same, as I say, crankcases are very similar so bearings etc you're laughing. Just the things I mentioned differ. So if you can grab your old crankshaft/stator/gen you'll be golden!

            H Offline
            H Offline
            hrozewic
            wrote on last edited by
            #5

            @Calum don't think I've explained myself the best. I can't realistically spend the money having my original crank reconditioned with a new rod n bearings etc when I already have a new one built ready to go in the cases. I need to find a way of either making DTX stator fit into DTR casing or make the DTR stator work with my bike.

            I know this isnt the best way but it's what I need to happen within my budget. Surely this is possible?

            Only other option is to sell DTR engine to recoup funds but I'd rather find a way to make the swap work than go through all that.

            I appreciate your help mate thank you.

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            • CalumC Offline
              CalumC Offline
              Calum
              wrote on last edited by Calum
              #6

              So the crank is no good. You can't retro fit the stator/flywheel to the crank.

              As I say, you can get the DTR stator and flywheel, but you need to buy the alternative flywheel cover and probably cases to mount the stator plate to, not 100% on that.

              I have ran older engines into my RE, but I bought a TZR engine whose stator and flywheel could be retrofitted with my RE flywheel/stator so I didn't have issues with the loom. The timing will probably be different and without an aftermarket ignition system to alter the static angle + any other bits, you'll need to find the appropriate CDI.

              But what you're saying is fitting the wrong crank into the RE cases and then trying to fit the RE flywheel and stator.

              The taper on the crank is wrong so the flywheel won't fit as it is inverted on the RE engine whereas the R has it on the other way, so the keyway is not machined in the right spot.

              I believe that's right, at least online resellers confirm that the DTR crank is for 1989-2004 only.

              Always Originate, Never Pirate!

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              • H Offline
                H Offline
                hrozewic
                wrote on last edited by
                #7

                A different ignition system is what I need then I think. Maybe a zeeltronic would be what I need to make this work?

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                • H Offline
                  H Offline
                  hrozewic
                  wrote on last edited by
                  #8

                  It would also be useful to mention I have both dtx and DTR ypvs systems

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                  • CalumC Offline
                    CalumC Offline
                    Calum
                    wrote on last edited by
                    #9

                    But what you're talking about is replacing the whole ignition system, flywheel, pick up, stator and CDI because you don't want to have your RE/X crank rebuilt.

                    Which PJME do for £40

                    https://www.pjme.co.uk/acatalog/Yamaha-DT125R-DT125-R-Crank-Rebuild-4121.html#SID=1170

                    That doesn't make any sense

                    Always Originate, Never Pirate!

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