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Bench sync be for valve adjust.

Discussion in 'XJ Technical Chat' started by Bobbybonez, Oct 1, 2011.

  1. Bobbybonez

    Bobbybonez Member

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    Im pretty sure i know the answer im going to get, but while ive been waiting for parts (bucket retainer and gaskets ect.) i had my carbs all apart, cleaned and synced BEFORE adjusting the valves. Now i know everybody here will tell me im doing it in the wrong order, but i wanted to do SOMETHING on it. So my question is, will i have to do it all over again after i get the valves set?
     
    Bobbybonez, Oct 1, 2011
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  2. Alysiak00

    Alysiak00 Member

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    idk if im right but i believe a bench sync whenever is fine to do. its just a rough way of getting in the right direction with carb settings. Now if you did a vacuum sync before valves, then you would have to do it over again
     
    Alysiak00, Oct 1, 2011
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  3. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Not the bench sync, no.

    The valves need to be in spec to get a good running vacuum sync. They need to be in spec before you make the final, on-bike running adjustments.

    If you got the carbs back on the bike and managed to get it all sync'ed up then yes, you'd need to re-do the vacuum sync after adjusting the valves.
     
    bigfitz52, Oct 1, 2011
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  4. Bobbybonez

    Bobbybonez Member

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    Cool, thanks guys!
     
    Bobbybonez, Oct 1, 2011
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