Weber IDA Rich at WOT Options

[Tbrown4x4]

OK guys. I thought I had grasp on the air corrector jet function, but my wideband is confusing me. Everything seems to be within acceptable values (12.5 - 13.8 or so) in most drive cycles except WOT.

Example: Cruising 60 mph at 3200 RPM and floor it, AFR drops to 10.3 to 11.1 and stays there as long as my foot stays buried. Or, pulling a long hill in 5th with the pedal floored. Same numbers. Actually pulls cleanly with no audible pinging.

I always thought the air corrector jet was for high rpm mixture control, like cruising at 7000 rpm. The bubbles slow the fuel flow so you don't get progressively rich running at high air flows.

In my mind, from 3000 rpm with a WOT, the air flow isn't high enough to bring the air corrector into play until the engine revs catch up with your right foot.

Am I looking at this the wrong way? And would a larger air corrector lean out the WOT mixture?

BTW, I have 40 IDAs, 200 AC, 130 mains, 28mm vents, 50 (or 55) idles.

[Tbrown4x4]

I have F11s in it. Seems like they're a good starting point for everything.

I should have a step or two smaller mains. I was spending so much money on brass, I figured a PLX would save me money in the long run. It's very sensitive. You can see the initial pump squirt, then the lean spot after and then it swings back into the normal range.

I only have the HP Weber book by Pat Braden. No real talk of what circuit effects WOT operation, just how fuel and air behave at different velocities.

To me, high speed operation and hard acceleration are two different animals. Like I said. I might just be looking at the problem wrong.

I will try the smaller mains and see what it does.

Like Falcor said, a carburetor is a compromise. I just want to it to be a good compromise. Also, I'm a cheap bastard that wants better MPG. I'm filling the tank every three days!