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Oct 22, 2008 1:49 am
Oct 22, 2008 1:49 am
Subject: Re: SU carburettor float levels
Peter, from our experience and observations some motors had the feature that yours has, others did not. It matters not, the critical thing is the level of the float forks should be the same so that at rest the level of the fuel in the jet is identical in each carburettor. To achieve this simply obtain a 1/2 inch bolt or rod, turn upside down the float chamber lid and place the bolt across the edges beneath the forks, then blow into the fuel inlet in the lid and if air will pass through then the needlevalve is not seating and a little more clearance betwen the bolt and forks is needed.
Mark and Jim.
Peter, from our experience and observations some motors had the feature that yours has, others did not. It matters not, the critical thing is the level of the float forks should be the same so that at rest the level of the fuel in the jet is identical in each carburettor. To achieve this simply obtain a 1/2 inch bolt or rod, turn upside down the float chamber lid and place the bolt across the edges beneath the forks, then blow into the fuel inlet in the lid and if air will pass through then the needlevalve is not seating and a little more clearance betwen the bolt and forks is needed.
Mark and Jim.