Hei conversion troubleshooting

halifaxhops said
Sorry Andy way to many names. It should be ported for the vacuum advance. That can possibly be the issue. I do not remember the amount of vac advance on that one. Just say it is marked 10 on the arm that is 20 degrees on the crank. OK for numbers sake you set it at TDC with a light then hook up manifold vacuum that is 20 right from the start then you start adding the mechanical in as you add rpms, it get really high fast. Is it pinging right before the stumble?

I will switch over next time I try, I guess I don't quite understand, doesn't vacuum drop to 0 when you stomp on the gas on both ported and manifold vac? Didn't hear any pinging but It would have been hard to hear over the exhaust.

67Dart273 said
Here is what I'd do ifyou have not. Check running voltage from dist. case to coil+ Should be "same as battery."

Have you tried another coil? Lost here whether or not EDIT Looks like you did

I don't think reluctor will cause this, as if it triggers at all it should fire. Usually a weal pickup will give hard starting, because as you rev it up, the output increases Be CERTAIN, however, about your pickup connections. Remove the pickup wires, CLIP your meter to them (resistance) and wiggle the wires and look for a change on the meter.

Unfortunately I don't even have a running Mopar presently that could use that dist or I could try and test it. If it's any help, LOTS of us have used these in various setups and they work......great....!!!

I actually clipped the old distributor connections off to check them thoroughly, they were good. Going to solder new ones on and try again.

If I had stray voltage getting through the ground, what would that look like on the meter? Coil hot to distributor case showing less or more than battery voltage? I am really electrical-illiterate.