V-Max Full Power Guide


The frame and engine number are two important pieces of  information to identify your VMAX. Table 1 shows different frame numbers and engine numbers sorted by different specifications.  Table 2 is a list of carburetors settings. Numbers used for European V-Maxes are not listed here. As evident in the table, the real full power is achieved by North American specification.  With proper modifications you can unleash the full power of any limited power version V-Max.

Table 1
Exported to: Year Engine No. Frame No. Max Horse Power (ps/rpm) Max Torque                 (kg-m/rpm)
Japan 1990.1 ~ 3UF(1) 3UF-00101~ 97/7,000 11.3/6,000
1991.12~ 3UF(2) 3UF-00101~ 97/7,000 11.3/6,000
1993.3~ 3UF(3) 3UF-03101~ 97/7,000 11.3/6,000
1995.9~ 3UF(4) 3UF-05101~ 97/7,000 11.3/6,000
USA (U49) 1985 1FK JYA1FK 145/9,000 12.4/7,500
1986 1UT JYA1UT 145/9,000 12.4/7,500
1987~1996 2WE JYA2WE 145/9,000 (~89) 12.4/7,500 (~89)
143/9,000 (90~) 12.0/7,500 (90~)
California 1985 1JH JYA1JH 145/9,000 12.4/7,500
1986 1UR JYA1UR 145/9,000 12.4/7,500
1987~1996 2WF JYA2WF 140/9,000 (~89) 12.0/7,500 (~89)
N/A N/A
North America (Canada) 1985~1986 1GR JYA1GR 145/9,000 12.4/7,500
1987~1996 2LT JYA2LT 145/9,000 12.4/7,500
Table 2 CARBURETORS SETTING LIST
  JAPAN U49 CALIFORNIA CANADA
Pilot Jet #42.5 #37.5 #37.5 #37.5
Pilot Air Jet No.1 #95 #90 #90 #90
Pilot Air Jet No.2 #170 #170 #170 #170
Main Jet #150 #152.5 #152.5 #152.5
Main Air Jet 2.0 2.0 2.0 2.0
Pilot Screw 2 times reverse preset preset 2.5 times
Needle Jet *5EZ47 5EZ43 5EZ43 5EZ50
*Needle jet for older than 3UF2 = 5EZ19, clips are on the third.