Quote: CVPost-300jk (quoted from post at 17:53:08 10/10/23) So if the centrifugal advance didnt work what would be the symptoms on a tractor engines performance ?
You have to know which of three types of vacuum advance you are referring to, as they are very different. For example, some yield high advance at idle & slower speeds and knock it back abruptly as engine throttle is quickly opened. Some use ported vacuum to increase advance as engine speed increases. Another used no centrifugal advance and a dual diaphragm, two port system to adjust advance. This last one wasn't in production for a long duration. I suspect to was not a good idea. Corvettes with the higher performance 327, 340 & 360 hp engines did not use any vacuum advance.
This post was edited by JMOR on 10/10/2023 at 03:47 pm.
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