2 bbl. Motorcraft & a dwell cam

[Alex Denysenko]

Originally Posted by goinbroke2

just thought of something else, you have 1/4" holes in the plates, i wonder if this is too big and effecting the t-slots. What i mean is, since so much air is going through the plate instead of having high speed air going by the t-slots, i wonder if this is why the fuel is coming out in blobs instead of atomised, which caused you to turn the idle up, which made it worse, so you turned it up more, etc, etc?

Try plates with 1/8" holes and see what happens, you might get some vacuum back and it might clean up the idle so you can use the screws/lower the blade angle closer to the t-slots.

i would say bingo,there be your high idle problem those carbs are very sensitive in that area, they also don't work well with power valves in race applications

[Dave Noll]

Looks like I've got some more experimenting to do.

[Phillip marvetz]

You mentioned the circle track guys turning 7000 rpm. I'm curious what duration cam they use......