help!! needed with engine for a vespa 90 urgant!!

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    andrewhealy96

    Posts : 32
    Join date : 2012-03-05
    Age : 21
    Location : Birmingham

    help!! needed with engine for a vespa 90 urgant!!

    Post by andrewhealy96 on Tue Sep 25, 2012 7:17 am

    hello,
    i have a vespa 90 my current engine has had its day and i am looking to add a 125 but i am not sure what engine will fit i have built this bike myseflf so i am aware it is not just as simple as out with the old in with the new.. any help highly appreciated.
    many thanks
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    ttscshaggy

    Posts : 1095
    Join date : 2011-07-23
    Age : 26
    Location : Swadlincote , Derbyshire

    Re: help!! needed with engine for a vespa 90 urgant!!

    Post by ttscshaggy on Tue Sep 25, 2012 7:43 am

    You either luckily source a primm/et3/Pk125 motor,
    Or you split down you current motor and change over the internals.

    51mm stroke crank
    125 topend
    long barrel studs.
    19/19 carb/ manifold/flange
    24/61 or the better 27/69 primary gearing.

    I take it your motor has points ignition and a 3 speed box ?
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    andrewhealy96

    Posts : 32
    Join date : 2012-03-05
    Age : 21
    Location : Birmingham

    Re: help!! needed with engine for a vespa 90 urgant!!

    Post by andrewhealy96 on Tue Sep 25, 2012 8:08 am

    thanks for the help im not really looking to strip the engine i have had enough of it is that the only engines that will fit, and do you know what enignes will fit in the pk50s as my mate is looking to upgrade aswell.
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    ttscshaggy

    Posts : 1095
    Join date : 2011-07-23
    Age : 26
    Location : Swadlincote , Derbyshire

    Re: help!! needed with engine for a vespa 90 urgant!!

    Post by ttscshaggy on Tue Sep 25, 2012 8:12 am

    All smallframe motors are interchangeable between v-range a pk.

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    andrewhealy96

    Posts : 32
    Join date : 2012-03-05
    Age : 21
    Location : Birmingham

    Re: help!! needed with engine for a vespa 90 urgant!!

    Post by andrewhealy96 on Tue Sep 25, 2012 8:26 am

    cheers i know what to look for now nice one

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