What do you think is unadjustable on a Stromberg? You can change needles, you
can change piston springs, you can change damper oils, you can change float
height. All the same things you can change on a SU, a Mikuni or a Keihin. As
for the SU being low tech, it's the same design as the Mikuni's or Keihin's you
admire, with all the same adjustments, principles and operations.
For understanding, none of the above carburetors are fixed venturi, they are
all variable venturi. The fixed venturi models, with the inherent performance
limitations, are Webers. That's why on a Weber it's very important to select
the right venturi size.
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