Re: [AMC-list] Ignition Coil Question

[adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)]

" From: John Lunde <lunde@xxxxxxxxxx>
" 
" Hey everyone,
" 
" I'm a little confused about something which I'm sure one or more of you all can answer!
" 
" I need a new ignition coil for my 68 AMX/390 and I'm using the stock points distributor.
" 
" Here's the thing. I remember years ago that I had an ignition problem which was diagnosed to be as a result of not having a ballast resistor before the coil. I always thought that the resistor ignition wire in the wiring harness acted as a ballast and alleviated the need to add an additional ballast resistor before the coil.
" 
" I have installed a reproduction wiring harness and do not know if there is a resistance wire going to the coil. I suppose I could measure the resistance to see. If so what kind of resistance should I expect?
" 
" Most of the coils I have found for AMC applications have text written on them indicating an external resistor required.
" 
" So my question is, what type of coil and set-up do I use?
" 
" Thanks to all who my reply to my question.

the '67 big cars used ballast resistance on -v8s- but not with -sixes-.
this cost me burned up ign wires and a tow in my 232 marlin when i was
supplied the wrong coil.  my '68 199 american has a resistance wire,
bypassed when i installed the hei dist.

i believe the original harness should have a resistance wire for the
coil, bypassed by the ign sw in 'start'.  wire or resistor, the value
should be about in the 1.2 - 1.5 ohm area.

does the pertronix conversion still require it, or does it adjust
dwell to accomplish the same effect?  or is dwell time constant and
always short enough to avoid burning the coil up?

________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen
adh@xxxxxxxxxxxxxxxxx                       and think what none thought
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