SU 1" - difference between jets?

[Jeff Taylor]

A photo of your carb / present linkage would be useful Jon. Does your present choke lever / carb body have the necessary provision for a return spring? I suspect the additional holes in the jet are because of differences in the individual components making up the jet bearing kit of parts between bronze bodied carbs and alloy ones and possible differences in the way in which the fuel flows from the bronze float chamber to the jet in the bronze body - though having never dismantled a bronze bodied carb, I can't be absolutely sure about that. The photo below shows the jet bearing components of a Morris 8 Series E H1 SU carb which are the same as the earlier Morris 8 Series I / II  UBA carb.


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