CB450 and CM450 Normal Shift Twins '82-'86 KeiHin 32mm VB22's and VB2E's
All of the 400-450 Twin carbs made from '78-'86 look similar, but they are VERY diverse. You have to pay close attention to the specific version to correctly rebuild and the bike they are currently installed. They are found to be interchanged and very mixed-up so just replicating current parts installed, is a recipe for disaster. No '84 was made in the US. Finally the CB450SC '85-'86 (VB2EA) as shown below. They are also 32mm carbs and will NOT work on the Automatic. Notable differences in '82-'86 would be the NON-adjustable float and matching float needle. They also use a accellerator pump. The '82 and later have screw-out idle jets and the '85-'86 has different air cut-offs and do not utalize the 3 jet system used up to that point, which means they also do not use a fuel passage plug. This covers US models only.
Below is pictured a '85-'86 CB450SC Keihin VB2EA carb set. '82 and later VB carbs typically use the screw-in idle jets and do not have the same internal tuning. NEVER use aftermarket needles they are always incorrect. I have rebuilt more of these than I can count and probably only a handful were actual virgin carbs.
'82 CM450C
Custom--------------------------------------------------------VB22G
'82
CM450E---------------------------------------------------------------------VB22J
'82
CB450T---------------------------------------------------------------------VB22L
'82 CB450SC
Nighthawk--------------------------------------------------VB22J
'83
CM450E--------------------------------------------------------------------
VB22Q
'83 CB450SC
Nighthawk--------------------------------------------------VB22N
'85-'86 CB450SC
Nighthawk---------------------------------------------VB2EA
'85 CB450SC
Nighthawk----------------------------------------------------VB2FA
California
'86 CB450SC
Nighthawk----------------------------------------------------VB2FB
California
