| I noticed that my '77 CV carbs had what
looked like a cutaway on the bottom of the slides and I
wondered why the slides from my '80 carbs did not. It
seems to me that the shape of the slide would affect the
air turbulence in the carb just as it does in the intake
port and you certainly don't want sharp edges in your
intake port. |
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| So I started by making sure I had plenty
of spare slides (I love to buy junk carbs) and got out a
coarse file. I cut a small bevel about 7mm in and 4mm
deep and smoothed it out with wet/dry sandpaper. This
felt like a big improvement. Notice that I also enlarged
the hole that allows the lower venturi pressure to draw
the slide upward. I did NOT enlarge it as much as DynoJet
kits do but did enlarge it slightly. This felt like a
significant improvement but I'm not one to leave well
enough alone so I decided to go for even more. |
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| The picture below is the next step I
took and is how I am running my slides now. I have an
XS1100 like this and an XS650. Both showed the same
improvement in smoother power right from the moment you
crack the throttle. I used a vibrator sander and
progressed thru 180-600 paper to round and polish the
surface after filing to rough shape. |
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