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Post by mike007 on Jul 1, 2022 15:30:26 GMT
Hi all I have a standard Vespa 100 three speed, I am thinking I could have a Polini 135 kit and a Polini exhaust fitted to get me up hills without dropping down to 2nd gear It will also help to go quicker but it’s the hills that are the problem ( it has drum brakes)so I don’t wish to go to fast
what’s your thoughts I could go from 5hp - 11hp?
Also is a head made of aluminium worth the extra cost to a cast iron one
many thanks
ps budget is tight and I wish to keep the three gears if possible
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Yoshi
100 Sport
Posts: 75 
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Post by Yoshi on Jul 1, 2022 18:05:51 GMT
That setup sounds good. I'd also get CDI ignition and 19mm carb with intake if you do not already have them.
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Post by jbcollier on Jul 2, 2022 14:28:35 GMT
The cast iron polini kit with the banana exhaust is just fine and will work well. Leave the 100 primaries in place and you'll be delighted with its performance on hills. All the Polini heads are aluminium, the more expensive option just has better cooling fins, not needed in this application.
What carb do you have right now?
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Post by mike007 on Jul 3, 2022 10:38:33 GMT
Hi thank you for the advice the carb is a Dell’Orto SHB 19/19
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Post by jbcollier on Jul 3, 2022 11:57:41 GMT
Follow the directions on jetting in the kit and you'll be fine.
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Post by mike007 on Jul 3, 2022 12:08:01 GMT
Great thank you for your help 👍🏼
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Post by mike007 on Jul 3, 2022 18:27:47 GMT
Hi thanks for all the advise another question will I need to run it in and how many miles many thanks
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Yoshi
100 Sport
Posts: 75
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Post by Yoshi on Jul 4, 2022 5:22:53 GMT
I'd take it gently for the first 200 miles. Varying loads and no long full power pulls. Do not use high end two stroke oil (Motul 800 etc.) during running in, because it will slow down the process. Lower shelf mineral oil is good.
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Post by mike007 on Jul 4, 2022 7:18:07 GMT
Thank again 👍🏼
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