B31 with mk 1 Concentric carb

[750rideruk]

I have a 28mm Mk1 Concentric to fit to my B31. Anyone used this and can you give me a steer towards jet sizes please?

[Bess]

Hi,
    Not sure of the specs with a 28mm, this is what Amal recommend:

http://amalcarb.co.uk/mk-i-concentric-series/600-series/base-line-specifications/26mm-bore/premier-rh-26mm-4-stroke-mk-i-carburettor.html

Best wishes...