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posted on July 1st, 2016 at 08:16 AM
idle jet
what is the difference between a 55 and a 55g idle jet ?
ACE76
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posted on July 22nd, 2016 at 08:36 PM
The size (bore) is indicated by the number, so they will "flow" the same amount (if not worn etc).
But are the THREADS the same (O.D.)? Are they exactly the same Length & Shape?
30 PICT- (and all earlier Beetle Solexes I think) used "55" (or whatever bore); but 34 PICT- onwards used the "g55" versions. The 30 PICT- had
the cut-off valve directly on top of the idle jet, presumably cutting off fuel flow at the jet, so perhaps the design of the top of the jet was
different...? (Have not owned a car with a 30 PICT-)
Some diagrams in old VW/Solex/Pierburg manuals label the various parts with letters, and "g" always seemes used for the pilot/idle jet, so perhaps
it just became a shorthand indication for it.
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