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Dyna S question

  • Thread starter Thread starter Loki
  • Start date Start date
L

Loki

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Want to upgrade my ignition system to a Dyna as my igniter is toast. It's an 81 550T with the KD electronic ignition. Does anyone know which Dyna S is applicable? I'm a bit confused on say Z1's site as they only reference the KD or ND points ignition systems and can't seem to find the answer on the web, thank you.
 
What makes you say yours is KD? I think all the KD's were points type. My understanding is you will need the ND type.
 
Igniter says Kokusan on it and the manual says "All 1980 and later models are fitted with a Kokusan transistorized ignition system", this is whats confusing to me as it still has the mechanical advance but the KD electronic system so was unsure of which Dyna is the one
 
1980-82 GS550s with electronic ignition use the DS3-2. You'll likely find that the included spacer is a bit too thick. You need a spacer to keep the included rotor from coming off the mechanical advance, but with the included spacer the rotor is not free to turn independently of the crank when the crank bolt is tightened down (verify that before you start modifying stuff). The rotor + spacer is about 0.6-0.8mm too tall. You can try to find a thinner spacer of the correct diameter, sand down the spacer, or sand down the top of the rotor.
 
Thanks very much for the replies, will go the DS3-2 route. And thanks for the heads up on the spacer Mike, will look to modify for fit as needed.

My Igniter didn't like 16.8 volts being put to it from a faulty R/R
 
Ended up just sanding the spacer down, worked good. Checked resistance on coil primary and secondaries, were all within spec but spark on #1 and #3 seemed a bit weak. Installed 2 dyna 3.0 green coils and wow, now that is some kinda spark. Did coil relay mod as well, only had .4 volt drop since I had already gone through all connections but figured since I was in there why not.
 
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