so... i have this 1978 vespa bravo and it feels like it has potential, but i truthfully am not sure how to get 40+ MPH without cheating (nitrous). all opinions welcome
so... i have this 1978 vespa bravo and it feels like it has potential, but i truthfully am not sure how to get 40+ MPH without cheating (nitrous). all opinions welcome
did you seriously just consider nitrous as a viable option for speed?
lol I hope not.
drill your carb, port match, and unrestrict your pipe if you want free speed.
i have heard of port matching. any links on porting the stock vespa? pictures of finished porting?
look in the vespa tuning section in the wiki, and search in the performance forum :)
the vespa cases are so close that there is no point in putting the time in to port match teh cases.
Your variator has a brass type ring that sticks on. This is a speed restricter it stops your top end and kills low end power. YOu can use a dremel to cut it off real easy than smooth it out.
Other than that get a carb, drill out the intake, and get a pipe do not get a polini, that will allow you to hit 35 maybe 40 if your a small guy.
13.13 Dellorto, $55 from treatshq
Malossi RedFilter, $15 from treatshq
Simonini circuit or similar pipe, roughly $120
Grind down the brass bushing in the variator as mike suggested. With proper jetting, that should get you to 40 or probly a bit over.
If you decide you like going fast, you can add a 64cc kit.
i have a 13.13 dellorto, a 65 jet, plain stock intake, a sito plus exhaust, and a 30 year old ignition coil. maybe ill shave the variators brass thing. im 5' 8" and 200 lbs so maybe i will never get this bike to go over 35 and still climbs hills.
Pull the transmission out of your back wheel, take it apart, clean all of the old grease and grim off of everything, put it back together with a new seal and gasket (Available from zippy) and new oil. Then clean and repack your front bearings. that will help you out a lot. drilling a couple of holes in your airbox and rejetting your carb will help some more. After that, you'll probably need a 64cc kit to get up to 35+. Check out the vespa performance in the wiki. Treats is supposed to be getting some more DR 64cc kits soon and they work great for the money.
I'm about 195. I have a grande and a ciao that are a little more souped up than that and they will both go 40 and climb hills no problem.
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