Isn't the one with two pipes the front one? one inlet from the fuel pump
and the second pipe feeds fuel back to the rear carb?
Les
At 09:43 PM 2/16/98 -0600, you wrote:
>I was just looking through a pile of odd parts and came across an SU setup.
>All looked familiar except for two things. The back carb float bowl had two
>pipes going into it. One is for fuel but what is the other one for? A fuel
>vent for emmisions maybe? The other odd thing I was not used to was a large
>brass pipe going into the throat just up stream of the butterfly. This came
>out the side and looked as if a hose would fit on it.By large I mean 1/4 ".
>This is a source of vacume , but for what? Bob C in KS
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