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    New Alternator

    Hi everyone my stag broke down today 120 miles from home, i had to have it relayed home, the alternator had packed in, can anyone advise me what alternator to get as there are different amps and upgrades etc my car is 1972 mk 1 if you can send a link if possible, thank you Martin
    If you don't know what to do don't do anything

    #2
    I got mine from Wards when I changed to an EWP, can't tell you what it is offhand, can look tomorrow?

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      #3
      I fitted a high output Wosp alternator years ago in my red stag when I had it relocated. Still going strong. Very happy with the performance.
      Ejwards did them as well......can't remember where I got mine.
      Ejward is out of stock.
      Regards,
      Sukhi

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        #4
        If you upgrade to a 70A output unit (most alternator/starter repairers will supply ACR type for£60-70) you will need to alter your wiring
        the B+ wire at the regulator will need to be extended along with the WL or IND (however marked) to run straight to the alternator in correct size wires, may be worth relocation to the top of the engine at the same time with a bracket from Tony or similar.

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          #5
          If yours is a Mk1 and still has the 11AC alternator and external control and regulator, then you need to decide whether to change to a Mk2 setup complete with 18ACR alternator. There are more choices for the 18ACR including upgrades to high output. Whatever you decide, do keep clear of cheap rubbish, or you will be replacing it again very soon.
          Last edited by DJT; 16 September 2021, 09:26.
          Dave
          1974 Mk2, ZF Auto, 3.45 Diff, Datsun Driveshafts. Stag owner/maintainer since 1989.

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            #6
            You could look at repairing the one you have, they are pretty basic and if the bearings etc are all good probably down to brushes or diode pack which are all available and cheap. Failing that if you don't wantt o run the risk of buying a poor quality unit, ask Tony white on here if he has one in stock.

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              #7
              I have got the old one out it is a Lucas, thank you who is tony White and how do i contact him?
              Last edited by STAG GEEK Mk.1; 15 September 2021, 17:24.
              If you don't know what to do don't do anything

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                #8
                If you look on eBay and search Lucas diode ACR you get some options:
                https://www.ebay.co.uk/itm/124886383...QAAOSwl8NVeekP

                Diode packs are easy to get out and to measure if you have a multimeter it will show a bad diode, you can check brushes at the same time then decide what you need to replace. Worst case and you trash the whole thing it needed to come out anyway.

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                  #9
                  For Tony White, see https://www.socforum.com/forum/forum...ted-parts-also

                  He seems to specialise in breaking Stags that have gone too far. I understand that he's not the easiest to contact, so persist, but have heard he's got many satisfied customers.
                  White 1976 build ("Mk2") only a few mods

                  Comment


                    #10
                    Originally posted by Roy_S View Post
                    If you look on eBay and search Lucas diode ACR you get some options:
                    https://www.ebay.co.uk/itm/124886383...QAAOSwl8NVeekP

                    Diode packs are easy to get out and to measure if you have a multimeter it will show a bad diode, you can check brushes at the same time then decide what you need to replace. Worst case and you trash the whole thing it needed to come out anyway.
                    No good if he has a Mk1 11AC alternator with external regulator and control relay. Those diode packs are for the Mk2 ACR alternator which has the gubbins built in.
                    Last edited by DJT; 16 September 2021, 09:27.
                    Dave
                    1974 Mk2, ZF Auto, 3.45 Diff, Datsun Driveshafts. Stag owner/maintainer since 1989.

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                      #11
                      Agreed, was following on your earlier post about first identifying what was fitted.

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                        #12
                        I would like to replace with a new one I have the pics on my phone but can't upload them onto the forum as I would like a straight swap with bigger output if possible
                        If you don't know what to do don't do anything

                        Comment


                          #13
                          Straight swap with bigger output is probably not easily available , converting to Mk2 ACR type opens up many options.
                          You can leave the control boxes in place to keep it looking original if that’s a worry. Plenty of info on here on how to convert. Also you don’t have to reposition it, it can stay where it is, but the bigger outputs (90A +? ) probably won’t fit down there. I used a 55A one, the main advantage is that modern ones put out more current at lower speeds than those older designs.

                          Terry
                          Terry Hunt, Wilmington Delaware

                          www.terryhunt.co.uk

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