Polini exhaust

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Hotdog
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Anyone fitted a Polini original exhaust to a standard Vespa px200 ? As I would appreciate any advice on jetting the carb. Also any feedback on performance etc. Thanks
Hotdog
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Ok I will try with a 125 main jet and work down, but when I spoke to someone from reedspeed albeit about a sip 2 exhaust they said you don’t have to change jets or timing as they are designed to be a straight swap!
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Bofs
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Main scooter: Zundapp Betta 500
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I`ve been running one on mine for a while now. Changed from JL r/h and the difference was massive. The JL was dead down low but the Polini restored that and still had the same if better top end power. I`m on a P200e with BGM top end( which is just a standard 200 top end in all but name) I had a 124 main in with the JL and now run a 122. I ride basically flat out all the time and it`s perfect. Timing at 19 degrees and temp never over 340 degrees f. Planning to advance timing a bit.
I`ve seen 6500 rpm on the flat but normally it`ll rev to 6200 which equates to mid 60s mph in the real world.
Muffspeed....no muff too tuff
Bad Samaritans SC

1957 Zundapp Betta 500 Auto
1966 Motovespa Sprint 210 Polossi
1960 Lambretta Cutdown 205 Project
Hotdog
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Thanks will try a 122 main jet. Would i be correct in saying 1997 px200 electric start timing is set 23 degrees ?
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Bofs
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I think from the factory the later electric start models had the ignition backed off a bit and set between the A and IT marks but only one way to be sure. Pop the flywheel.
My mates bog standard P200e still runs 23 degrees problem free and that`s with the crappest two stroke he can find :D
Muffspeed....no muff too tuff
Bad Samaritans SC

1957 Zundapp Betta 500 Auto
1966 Motovespa Sprint 210 Polossi
1960 Lambretta Cutdown 205 Project
Hotdog
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Ok, will have to invest in a flywheel puller.
eibargum
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Main scooter: Vespa PX210 Polini
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Hotdog wrote: Mon Apr 15, 2019 6:56 pm Ok I will try with a 125 main jet and work down, but when I spoke to someone from reedspeed albeit about a sip 2 exhaust they said you don’t have to change jets or timing as they are designed to be a straight swap!
Iam surprised they said that Mr Dog, on my standard set up I had to go up four on the main to 122 to get the same plug colour as I had using the standard pipe with a 118 in. plug was white with 118 in using the SIP 2.
Hotdog
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I to was surprised, that’s why i chose to ignore their advise and ask for advice on here.
eibargum
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Hotdog wrote: Thu May 30, 2019 7:52 pm I to was surprised, that’s why i chose to ignore their advise and ask for advice on here.


Wise man, ;)
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