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Turbo GpZ550 Ignition misfires starting above 10 lbs boost 28 Apr 2020 09:13 #824499

  • garylbishop
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DoctoRot wrote: whoa , were gonna needs pics documenting the process. very cool.


I'll take plenty of pics
I may have to modify the clutch cover too but I'll document the whole thing.

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Turbo GpZ550 Ignition misfires starting above 10 lbs boost 22 Jun 2020 07:59 #828658

  • garylbishop
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Just an update on the high boost misfire issue with stock ignition system.

I added the 19V step up transformer to supply the ignition coils and that solved the whole problem.
At last report I was still running .022" plug gaps but have since opened them to .035 and still have no misfire under 11-12 lbs boost.

While idling, voltage at the coils (maximum dwell) is 16V. That's 3V below the no-load voltage of the step-up transformer and should also be the lowest voltage seen by the ignition coils.
The following user(s) said Thank You: loudhvx

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