Different SU Carb for 1098cc engine

Side valve, 803, 948, 1098., 1275 and Vizard mods

Different SU Carb for 1098cc engine

Postby starider » Wed Jan 16, 2019 12:46 am

Hi, can anyone help, I seem to remember in the distant past being told that an increase in performance can be gained by fitting an SU carb. etc, from a Metro? Is this a fact or is it my ancient memory playing tricks.If true what is the carb model/number. Thanks..............................starider
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Re: Different SU Carb for 1098cc engine

Postby Panky » Wed Jan 16, 2019 11:37 am

A HS4 or HIF38 off Mini or Metro are both 1 1/2" choke diameter and will give a little improvement but you will need the manifold to suit. But you really need to look at the whole system to make any significant gains. As well as the carb a nicely ported head flowing into a larger bore exhaust makes a nice difference.
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I just paid £580 for carb, manifold and a new race exhaust, I went to a mini dealer


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