Vespa 90 V9A1T Specs
1963 – 1986
engine: single cylinder, air cooled 2-stroke
induction: disc valve
bore: 47 mm
stroke: 51 mm
cubic capacity: 88.5 cc
compression ration: 7.2: 1
bhp at rpm: 3.1 @ 5200
transmission: 3 speed constant mesh
primary drive: 22/63 1st gear: 17.18: 1 2nd gear: 9.66: 1 3rd gear: 6.12: 1clutch: wet – multiplate
lubrication:2%
carburetor: Dell’Orto SHB 16/16
main jet: 63 slow running jet: 38 starter jet: 50ignition: contact breaker & coil
ignition timing: 19 deg. BTDC
breaker gap: 0.3 – 0.5 mm
voltage: 6 volt
max stator output: 6v – 30w
wheels:10″
wheel hubs: pressed steel
tires: 3.00 x 10
Please check out the VIN decoder HERE if you have any questions about the year
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