SU carb sizes

[Randy Wilson <randy@taylor.wyvern.com>]

Some anonymous poster stated:
> Start with the assumtion that it was an SU, just because that's all I've ever
>seen on 'tween-wars British cars other than Rolls. The port diameter expressed
>in fourths of an inch is the SU model number. Example: an SU H6 is 1-1/2"
>throat diameter. You can probably find something newer that will fit so your

Ummm, but the H6 is a 1-3/4" carb. At least for post war H series carbs, the
formula is:
  throttle bore = (SU_number/8) + 1"


  Randy
  randy@taylor.wyvern.com