Posting a link to a few of the related pictures that evaporated due to the Photobucket thing.

https://www.plymouthcarclub.com/2018/05 ... -cap-gaps/

Any other requests for additional specific pictures will be found at that same link.

Don

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1965 Dart 110k, 225, Carter BBD Super Six, 2 1/4 single exh., sbp manual scarebird front disc, 7 1/4 rear 2.94 sure grip, 14 x 4.5 OEM wheels, 833 OD with hyd. throwout bearing, HEI, electric fan, ram air/heated air, Accusump. http://plymouthcarclub.com/

My old ignition scope is currently buried, I have a sm
Snap on "counselor" I picked up via CL probably 10 years ago.
(I liked the old sun 1015 and 1215 I used at past jobs better but this one does the job)
I wonder if it could be picked up on a scope screen if this we're an issue?
I've forgotten a thing or 2 about scope patterns over the years

The Sun 1215 that I used did a great job at displaying on the scope the entire cycle showing voltage in the coil line.
I'll dig out the picture and add it to the link that shows some past pictures. It even shows the impact of opening up spark plug gaps for example.

Don

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1965 Dart 110k, 225, Carter BBD Super Six, 2 1/4 single exh., sbp manual scarebird front disc, 7 1/4 rear 2.94 sure grip, 14 x 4.5 OEM wheels, 833 OD with hyd. throwout bearing, HEI, electric fan, ram air/heated air, Accusump. http://plymouthcarclub.com/

Thank You Reed for bringing the images into this thread.... as I am about to give this a go with a points distributor that I just acquired... Tho I am not sure I can drill the required holes in the distributor bottom/side with out drill press? Might try it with a cutoff wheel on the angle grinder...

Unless you have a spare distributor that you can make into a jig to measure gaps between the rotor tip & new cap terminals you are shooting in the dark making up your own rotor tips. I test every rotor/cap before installation and grind the offending cap terminals each time I'm changing the cap & rotor. Essentially they become a matched set. Without the jig you cannot do that important step. I have been setting the rotor tip to cap terminal to within .015 to .025 inch as a working guide and checking resulting plug wire voltage to validate my Dart remains reliable.

Don

ps: I go to mid Vt. during the summer months.

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1965 Dart 110k, 225, Carter BBD Super Six, 2 1/4 single exh., sbp manual scarebird front disc, 7 1/4 rear 2.94 sure grip, 14 x 4.5 OEM wheels, 833 OD with hyd. throwout bearing, HEI, electric fan, ram air/heated air, Accusump. http://plymouthcarclub.com/