Quote: Depends on your carburetor somewhat. You'll run rich and your gas mileage will suck if you don't get out of the idle circuit. Really need to be above 2000 rpm for best mileage.
DEPENDS on what carb you are running ... a small primary venturi with Xcellent fuel mixing is the ticket. And GUESS WHAT carb that is ?
I read some really detailed cyl-head-chat about power and MPG. I think it was a related hi-tech article when I was searching for a lab in the Chicago area that did work on the topic of Tribology ... (the study of friction in a internal combustion engine!)
It said that in the IDEAL WORLD ... you would want to reduce and expand intake valve and port size based on the rpm range of the engine.
Since this is not possible on any of our-junk ... I am going to reduce intake port size by at least 30% ... in combination with directing the air-fuel mixture to one-side of the port to hopefully enhance the swirl-effect.
