Dell carb tweaks

I have the Superformance Dell manual however it gives me no specifics on accellerator pump output. Is it trial and error?
I took my time and spent patient hours re-builiding my Dell 40s however I am guessing on the output of the Acc. pump. What I ended up doing is installing them when the output of each pump was 6ml per ten pumps. I coudl get it up to 9ml and as little as 2ml.
Mild cam in a 1776 with big dual exhausts.
Thanks.

I'd start with max discharge. If it runs OK leave it. If you want to find the minimum discharge your motor will be happy with, back off the discharge until it hic-ups when you give the throttle a quick stab. The hic-up is when it's lean, it recovers when it gets on the mains. add more discharge til the hesitation goes away.

Also they squirt in the wrong place, although I don't think there is a remedy for that. The acellerator pump discharge should hit the butterfly right where it starts to open when you hit the throttle.

Greg B

A big thanks to you Greg. I will go with that. IT is hic cupping back into the carbs so I knew it was lean, but thought it might have been the idle jets---altugh they look a nice deep tan color. THis may have somehting to do with my hi oil temp as well.

Running lean is the quickest and easiest way to make an aircooled engine run hot. Do you know your head temperatures?

Ralph,
The accelerator pump jets shouldn't make a difference on your plug readings, Unless you look at the plugs after blipping the throttle a bunch of times. They shouldn't change the way it idles or runs after they've completed their cycle.
The accelerator pump system only squirts on the initial throttle action.

Greg B