Re: Distributors and advance curves - how many did Packard build?
Posted by Craig Hendrickson On 2010/6/16 22:58:17
Jack Vines wrote: Quote:
Another thing I noticed was the shaft end play was on the high side of the already generous specifications. I shimmed mine back below the minimum. This will improve spark timing accuracy. When the distributor shaft can move up and down, the spiral gear advances and retards the timing.
"Back in the day" of H-O Racing, I used to sell an "Accuracy Kit" for the Pontiac HEI distributors, which included custom weights, vacuum advance and shims. Of course, the shims were to minimize the distributor housing to gear end play. I'm glad to hear that you took care of the "spiral gear" timing change problem on your rebuild. FWIW, most seem to overlook that problem.
Craig
This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=54760