[kent olsen]

Once again I'm going to try to tune out the weber stumble between idles and mains.

3.0L twin plug, 9.5:1 pistons, Dougherty GT2-102 cams, 1.5" SSI's.

40mm webers with 60 idles, 175 air, 160 mains, 36mm chokes and F3 emulsion tubes.

This engine was tuned on J&B racings engine dyno and runs perfect from 3800rpm to 7200rpm, power, torque and Air Fuel Ratio.

I have tried to tune out the stumble transistion from idle to mains. I end up with 60 idles but there still is that stumble. I tried 55 idles and there is a hole I can put my hand thru, no good. 65's are about the same. I thought I should try to open up some of these to try something inbetween.

Then I talked to Mark Jung the resident Oregon MFI expert and he suggested changing the emulsion tubes. Hmmm, does anyone know if that would do anything about the transistion stumble or just move it around?

Kent Olsen