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  1. 07-21-2015, 05:12 AM #1
    Shades
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    09 TZ125 Ign timing



    a d v e r t i s e m e n t

    Hi all,simple question,I have a late model TZ125,what would the ignition timing be,running unleaded race fuel.
    many thanks
    Ade
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  2. 07-21-2015, 05:58 PM #2
    dand
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    Since you're using unleaded, I would set it to what the manual says, 2.3mm BTDC, for starters.
    Dan Decker
    CCS / USGPRU #464 AM
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  3. 07-30-2015, 04:44 PM #3
    Shades
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    Cheers Dan,any thoughts of what changes I should make it if I run 100% avgas?
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  4. 07-31-2015, 11:31 AM #4
    dand
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    If you run leaded fuel, you can / should advance the timing. 2.4 or 2.5mm BTDC should be good. I believe the leaded fuel burns slower, so needs more time to ignite, so the spark needs to happen earlier ie more advance.
    I use VP C12 and advanced to 2.4, then 2.5, and then 2.6. at 2.6 I lost oo much over-rev, so I backed it back down to 2.5
    Dan Decker
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  5. 08-01-2015, 05:52 AM #5
    Shades
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    a d v e r t i s e m e n t

    Thankyou Dan
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