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Adjustments for elevation.


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Anybody have experience in rejetting for elevation. Where I Iive is 3200ft above sea level and I know the thinner air is handicapping the engine power. Set up is currently Spec 9 Dellortos.

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EuroCarb and Tim Engle have been helpful with suggestions. Obviously the air is less dense at 3200ft, so in the current setup the fuel to air mixture is way off with the fuel ratio being too rich.  So smaller idle and main jets are required. Starting point will be to reducing the idle jet from 50 to 45 and the main jet from 160 to 155.

I mistakenly posted I have spec 9 carbs which is wrong. I have no idea why I did that. I should of posted the setup was spec 5.

Will update on what effect the new jets have.

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On the subject of carbs, why am I getting fuel pissing out of 1 carb at the pump. Grrrr. New diaphragm and gasket fitted.

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