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On 2 Mar 2003 at 23:31, BOB2TYPE3S@aol.com wrote: > Jim A. wrote: > >This turns out to be more of a change than I expected, but it's still > >not much. I think this amounts to much less than a 5% change, so it's > >a lot less than changing one jet size. > So, is this really a detrimental thing, being less than 5%? No, I can't imagine that this would be enough to make a noticable difference. I may try to do the calculation a bit more accurately later, but for now I am sure that the effect is LESS than the numbers I posted: .015-.020". This looks like it would make a change in the main jetting of about 0.5%-2%. In other words, these figures are upper bounds on the real effect. OTOH, I'm not sure how close you can trim a carb, so there is always the possibility that Solex thought they could do better than this. But from conversations here with a fellow who once did a lot of studies on carbs from various manufacturers, I'd guess that even the 2% figure is WAY down in the statistical noise and variation. I've got your carb packed up, but I have another package to pack and will wait a day or so until I can make just one trip to the Post Office. Thanks Bob. -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ------------------------------------------------------------------- List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org