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Coil recomendations please

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    Coil recomendations please

    While working to get my 750 road ready (just rebuilt the carbs so now I'm "the man") I discovered that one of my ignition coils has tapped out. In an effort to continue toward getting the bike started and tuning the carbs, I threw one of the coils from my KZ650 project on my GS. Long story short, it runs but the coil from the KZ doesn't allow my tank to seat properly. Not a big deal because I knew this is a temporary fix.
    My question to you real motorcycle gurus is what my best bang for buck is on new coils. I think I'm going to just replace both of them right now instead of just the spent one. Is there anything wrong with a 5 ohm dyna coil?
    Thanks
    Last edited by Guest; 06-20-2013, 10:37 AM.

    #2
    Dyna coils are decent quality, but there have been a few people reporting failures so not sure they are better than OEM per say. If you get Dyna's, I think the green ones are the appropriate choice for GS bikes using an electronic ignition. Black coils are for points bikes.

    Just my opinion, but I'd look for some used coils instead of popping all the money for Dyna's. Dig out the wire and replace them with new. New plug cap too (NGK make good caps for a fair price). The OEM coils are very reliable and rarely fail. It can happen of course, your bike as reference, but it's not common at all.

    Lastly, check the voltage getting to the coils as low voltage is a much bigger problem than bad coils. In fact, many times people blame the coils when there is nothing wrong with them.

    Good luck
    Ed

    To measure is to know.

    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

    Comment


      #3
      I have the ACCEL super coils on my bike, they have been on there since 82 I believe. Never a a days problem with them and they will still knock you down.
      sigpicMrBill Been a GSR member on and off since April 2002
      1980 GS 750E Bought new in Feb of 1980
      2015 CAN AM RTS


      Stuff I've done to my bike:dancing: 1100E front end with new Sonic springs, 1100E swing arm conversion with new Progressive shocks installed, 530 sprockets/chain conversion, new SS brake lines, new brake pads. New SS fasteners through out. Rebuilt carbs, new EBC clutch springs and horn installed. New paint. Motor runs strong.

      Comment


        #4
        Originally posted by Nessism View Post
        Dyna coils are decent quality, but there have been a few people reporting failures so not sure they are better than OEM per say. If you get Dyna's, I think the green ones are the appropriate choice for GS bikes using an electronic ignition. Black coils are for points bikes.

        Just my opinion, but I'd look for some used coils instead of popping all the money for Dyna's. Dig out the wire and replace them with new. New plug cap too (NGK make good caps for a fair price). The OEM coils are very reliable and rarely fail. It can happen of course, your bike as reference, but it's not common at all.

        Lastly, check the voltage getting to the coils as low voltage is a much bigger problem than bad coils. In fact, many times people blame the coils when there is nothing wrong with them.

        Good luck
        Thanks for the heads up. I failed to fill you guys in completely. The coils that are on the bike are not OEM. And there is a marking on them that suggest they may be very old a/m units.



        I'm not sure, as you mentioned, that the coil is bad, but when I replaced it with the old Kawi coil, I regained spark for those two plugs.

        Comment


          #5
          Originally posted by Nessism View Post
          Dyna coils are decent quality, but there have been a few people reporting failures so not sure they are better than OEM per say. If you get Dyna's, I think the green ones are the appropriate choice for GS bikes using an electronic ignition. Black coils are for points bikes.

          Just my opinion, but I'd look for some used coils instead of popping all the money for Dyna's. Dig out the wire and replace them with new. New plug cap too (NGK make good caps for a fair price). The OEM coils are very reliable and rarely fail. It can happen of course, your bike as reference, but it's not common at all.

          Lastly, check the voltage getting to the coils as low voltage is a much bigger problem than bad coils. In fact, many times people blame the coils when there is nothing wrong with them.

          Good luck
          +1 on this advise, it's what I did when one of mine was leaking waxy goo. Picked a set up on Ebay.

          Comment


            #6
            I have a set of ignition coils off a 82 gs850 - mounting bolts are about 4 inches apart. (the coils on my 650 have mounting bolt spacing of about 3.5 inches ) . they test out good and have stock bullet connectors with correct color! If you decide to go the cheap route, send me PM
            1981 gs650L

            "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

            Comment


              #7
              Originally posted by tom203 View Post
              I have a set of ignition coils off a 82 gs850 - mounting bolts are about 4 inches apart. (the coils on my 650 have mounting bolt spacing of about 3.5 inches ) . they test out good and have stock bullet connectors with correct color! If you decide to go the cheap route, send me PM

              PM sent.
              Thanks

              Comment


                #8
                Tom203,

                I appreciate the sweet deal. I got the coils on Wednsday and installed them last night. It all fits well and runs well. Now to get the valve cover gasket replaced.

                Comment

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