Ignition Conversion Vespa Sport 150, 1960 ish model

Last post 09-21-2015 09:04 AM by Mike Holland. 2 replies.
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  • 09-19-2015 07:15 PM

    • Kiwi
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    • Joined on 05-30-2012
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    Ignition Conversion Vespa Sport 150, 1960 ish model

    Hey Everyone out there...

    Curently underway puchasing the above Vespa. Will not be an everyday runner, pretty much just a Summer weekend runner. To make it more relaible, am thinking of converting it to electronic ignition. 1/ Has anyone carried out a conversion?  2/ Where can i purchase a kit preferably a non Asian variety? 3/ Pro's and Cons or suggestions greatly appreciated???...



  • 09-19-2015 07:34 PM In reply to

    • INMA
    • Top 50 Contributor
    • Joined on 03-19-2009
    • Posts 845

    Re: Ignition Conversion Vespa Sport 150, 1960 ish model

    With modern two stroke oils, the original ignition system should be fine.

    Use any JASO FC oil and fouled sparkplugs will be a thing of the past, I use Castrol.

    If anything needs upgrading, then a new NGK spark plug, cap and lead should be enough without risking the conversion to a CDI.

    If the spark from the old system is a bit weak, closing the gap by 30% will lower the stress on the system and keep it reliable. In the old days larger gaps were needed to cope with plug fouling from leaded petrol and thick oils.

    2001 Yamaha Zuma, DR Evo 68 cylinder, Leo Vince TT derestricted, Delorto 17.5 (#98 jet), standard aircleaner, RMS fan, Race CDI, Standard oiler and premix @ 75:1 Shell SX2, Doppler SR3 variator, RMS clutch, RMS R rear shock absorber and Pirelli SL26 tyres.
  • 09-21-2015 09:04 AM In reply to

    Re: Ignition Conversion Vespa Sport 150, 1960 ish model

    I hope you can find some easy kit to do the conversion. I converted my Vespa Rally180 to electronic ignition, but just by fitting the components for the Rally200 electronic that came out a few years later. Never had another backfire after that. Conversion is definitely worth while for good, reliable running.

    I also converted my Rally to 12 volt electrics, by fitting two 6v headlight coils in series to power everything. 




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