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Jul 01, 2011 1:17 pm
Jul 01, 2011 1:17 pm
Subject: Re: Help identifying SU carbs
I have an SU carburetter workshop manual, & that states that the brass suction piston was replaced by a thin-walled aluminium one in 1950 (but the brass one can be replaced by an aluminium one with spring). Up to 1939 the pistons were thick-walled aluminium or zinc.
This might at least help date the carburetters...certainly the longer neck ones are earlier, & I'm fairly certain the shorter neck ones are post 1950.
Laurence
I have an SU carburetter workshop manual, & that states that the brass suction piston was replaced by a thin-walled aluminium one in 1950 (but the brass one can be replaced by an aluminium one with spring). Up to 1939 the pistons were thick-walled aluminium or zinc.
This might at least help date the carburetters...certainly the longer neck ones are earlier, & I'm fairly certain the shorter neck ones are post 1950.
Laurence