WHAT CARBURETOR IS
BEST FOR A VESPA
OK, you changed the exhaust on your stock Vespa
and are thinking of a better carb. What are your
options?
There are three basic types. From worst to best:
old-tech original style, roundsldes, and
flatslides/D-slides:
Old-school
Dell'Orto or Jetex/Spaco 17/22/24mm copies of
the original design from 300 years ago. Fairly
cheap. The benefit of some of them of course is
that the fuel is premixed, though most aren't.
One option is to upgrade to a 24mm.
Roundslides
Mikuni and Keihin (Japan), or Dell'Orto (Italy)
up to 28mm. Roundslides are a step up in
technology from the original-style carbs, giving
better throttle response and tuning capability
(i.e., more things to tinker with if you want it
just perfect). OK option, but more expensive.
Japanese carbs have the best reputation but,
depending on your location, people might have
more experience with Dell'Orto, especially in
the UK, though dirtbike shops anywhere are a
good source for parts and tuning of Japanese
carbs. Nonetheless, people don't seem to use
these much on Vespas.
Flatslides and D-slides
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Again, all three companies offer carbs ranging
from 24 to 32mm and up. Flatslides give better
throttle response than roundslides because of
the design of the slide, as well as
incorporating other new design features.
D-slides improve upon flatslides, reducing air
turbulence in the carb, and are the best. Keihin
PWK D-slides are great carbs, better than
overpriced, inferior Dell'Orto VHSA/B, and, some
say, easier to tune than Mikuni, though others
like the TMX system. (Read the Scootering
showdown for the lowdown on PWK vs. Dell'Orto.)
These carbs are quite expensive, or we have pattern PWK cheap. We'd
recommend the 24mm PWK-type flatslide on most
setups with a tuned exhaust, unless a highly
tuned kit, in which case the 28/30mm. It's a
very good setup.
Extras
You need a new manifold with all of the above
carbs, so factor each manifold's cost into the
price. (We include manifolds in our carb kits;
not sure who sells Dell'Orto ones, or what all
mixes and matches.)
If you have any questions, our professional & friendly customer
service staff will stand by to assist you.
STAR VESPA
24 hours Order: +84 9081
28158
Email: sales@starvespa.com
& starvespa@gmail.com &
support@starvespa.com
+84 9081 28158
