Sounds good to me..19.5, almost 20 as A&G mentioned.
I do the same thing, Andy…it works!! I have big 6” vacuum gauge off an old Sun test stand..you can really see what is going on.
Once you do that , you realize how futile adjusting the ram mixture screws by listening etc is . The Golden screwdriver does not work.
Why the needles are often “ringed” half way down the taper from thousands of adjustments. I may have mentioned before but Edelbrock needles are slightly different taper , and of heavier construction--- they fix that problem with worn needles really well . I think they contact inside the carb body at a new place. Whatever---- it fixes “the needles don’t change anything” syndrome . They fit right in.
Look at your needles..if obvious wear rings around what is supposed to be a smooth taper, they turn on and off abruptly as worn part seats, , drives you crazy…
I have one 1961 Chrysler Tune-Up chart - source unknown - that says all engines 19.5" at idle. That's the only place I've ever seen a number. Works for me, I tune my carbs with a vacuum gauge.
G issue at the printers
H stories needed!
Posted by: "John Grady" <jkg@xxxxxxxxxxxxxxxxx>
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