If I remember correctly some webber's reply on fuel being issued from the accelerator nozzle al high air flow to enrich the mixture.enigma57 wrote: ↑Mon Jun 01, 2020 2:41 amThanks, ClassAct. Yes, I remember those discussions here some years back. Always interesting.......
One school of thought was for setting power valve as per Holley's recommendations (idle vacuum in neutral if running a stick or idle vacuum in gear if running a slush box). Other school of thought was for setting power valve by manifold vacuum at cruise with car in motion on highway. And others simply said in so many words to experiment and give your engine what it wants. I have tried all of the above with non-Dominator Holleys and each methodology has merit.
Another reason I enjoy tinkering with Webers. The series I work with most has only one variant which runs a power valve and there are no varying sizes. Just the one. The remainder have no power valve and must be jetted accordingly when reconfigured to run on plenum intake rather than IR intake.
Been awhile since I tuned on IR webers..