[Mgs] setting jets in su's

Paul Hunt paul.hunt1 at blueyonder.co.uk
Wed Mar 4 02:15:03 MST 2009


True, but the setting for the float height is relatively crude compared to
tweaking the mixture nut or screw to move in and out of the correct mixture
point - anywhere within 1/16" compared to a fraction of a turn.  Mixture is
more a factor of the needle width where it meets the top of the jet than the
height of fuel in the jet, which is why there are many needle thicknesses and
profiles but just one jet, float, and float height.  The ideal mixture (and
needle profile) is determined by many factors of the intake, carbs, combustion
chamber and exhaust, which is why mixture *is* set dynamically with the
mixture adjusting nut and not by a static measurement, other than as a
starting point.  The corollary is that setting timing dynamically is far
preferable to setting it statically.

PaulH.
  ----- Original Message -----
  ...
   the fuel level
  in the jet is defined by the fuel level in the float bowl.  My
  guess is that instead of equalizing the mixture by adjusting the
  jets, he chooses to fix the jets and tune the float level.


More information about the Mgs mailing list