Retro Fitting a Newer Rectifier/Reg onto old 1977 KZ750 Twin

  • jtgraha2
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Retro Fitting a Newer Rectifier/Reg onto old 1977 KZ750 Twin

27 Mar 2008 05:49
#202444
Hey,

I'm having a charging issue with my 1977 KZ750 Twin. It won't charge the battery. I believe it's the rectifier thats gone bad. My question is can I take a newer Rectifier/Regulator style with 3 legs (my original dynamo has 3 legs) and simply install it into the system in place of the old one?

Thanks,
Jon

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  • steell
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Re: Retro Fitting a Newer Rectifier/Reg onto old 1977 KZ750 Twin

27 Mar 2008 08:43
#202475
Nope, just using the 78-83 regulator won't work.
You will need the 78-83 stator, rotor, engine sidecover, and reg/rec.

And the KZ440 electronic ignition timing advancer, pickup, and igniter, to convert to electronic ignition (or the same parts off a 82-83 750 twin).
KD9JUR

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  • Qdude
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Re: Retro Fitting a Newer Rectifier/Reg onto old 1977 KZ750 Twin

27 Mar 2008 20:59
#202600
It is easy to build one from Radio Shack parts.
77 KZ 650 C1.
77 KZ 650 C1.
Crashed-Repaired, Pods, Kerker pipe, re-wired core bundle, lamp upgraded, homemade rectifier, solid state regulator , Dyna-s ignition, repainted, slightly modified, year-round commuter
Honda Metro 85 mpg Scooter. Dont laugh I will throw it at you

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