Jon O.
Well-Known Member
I have an old Dwell/Tachometer. I know it has to do with checking the points, but what does it mean, and what can I do with it? Thanks.
YesDo you have points?
So if my dwell meter reads about 57 degrees, isn't that too much?Why dwell is important. Inductive ignition systems store their energy in a magnetic field - correct dwell allows this field to reach its maximum strength within the design limits of the coil.
Yes, but im also not sure how accurate it is. It is probably more than 40 years old. What problems would there be with too much dwell?Yes. You sure you have your dwell meter set on 8 cylinder if there is such a switch or reading the correct scale on the meter>??
It runs ok, thats why I haven't screwed around with it too much. But if the engine isn't still hot, it has real trouble starting. But I think that is a carburetor issue.I can't imagine if dwell was that high it would run well ,maybe not at all. How is the car running?
Ok ill probably get a new one, and then check back on here. Thanks for your help.View attachment 190820
I got this to check against my very old one. They are cheap.
Dwell angle is the amount of time (measured in degrees of distributor cam rotation) that the contactpoints remain closed. Initial point gap determinesdwell angle.
Dwell is more critical than point gap. I like a dwell around 28* with most factory or stock replacement aftermarket coils. Set dwell, then set timing, then look at the carb.