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new dellorto 19mm PHBG RS special 90th anniversary edition race carburetor!! compared to a standard PHBG, among many other improvements, the 90th edition
boasts an air flow increase of 15%, more prompt delivery
thanks to a new shape of the venturi, a new anti-friction treatment in
Teflon of the throttle valve and a chromed Avional mixture chamber cover as well as an engraved float bowl.
race edition features black finish, metal float bowl, quick access jet changing bolt on bottom of float bowl, screw off carb top (versus two screw removal on regular edition), oil intake nipple and vacuum nipple. race edition has spigot mount for use with a rubber coupling, clamp edition is available but only in non race edition, bummer. race edition also features a cable choke, though the pull style chokes are available separately too if you prefer not to add more cables yet desire a choke.
perfect for kitted motobecane, puch, peugeot, minarelli, garelli, sachs mopeRS etc.
found on numerous motorcycles and scooters as well - check your manuals, do some research. polini 50, husky 50, ktm 50, vespa, ya ya.
the dellorto 19mm black race carburetor generally comes with this set up so you can plan your tuning:
main jet = 75
idle jet = 45
starter jet = 60
slide = 30
needle = W9
atomizer = 262 AN
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