Re: By pass ballast resistor with MSD
[Re: dynamite]
#486494
10/02/09 10:39 PM
10/02/09 10:39 PM
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Joined: May 2005
Posts: 2,295 dark side of the moon
Dougsmopars
top fuel
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top fuel
Joined: May 2005
Posts: 2,295
dark side of the moon
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I have never used a ballast with any electronic ignition and aftermarket coil. My local speed shop has been building mopars for over 35 years. He never uses a ballast resistor with electronic ignition. I use the blue HP voltage regulator, constant 13.5 volts.. I've never had a problem. Car has never skipped a beat. Just check your coil. MSD blaster says in there paper work not to mount it lying down, as a stock mopar would. If i'm going for a stock look i use MP coil.
Last edited by Dougsmopars; 10/02/09 10:41 PM.
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Re: By pass ballast resistor with MSD
[Re: Cuda67]
#486496
10/03/09 01:36 PM
10/03/09 01:36 PM
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Joined: Jun 2008
Posts: 1,822 Colorado
denfireguy
top fuel
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top fuel
Joined: Jun 2008
Posts: 1,822
Colorado
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Even with a resistor, I gap plugs on capacitive discharge ignitions of any brand at .040 Been doing that since the Delta Kits in the 70's without an issue. Craig
Last edited by denfireguy; 10/03/09 01:38 PM.
2014 Ram 1500 Laramie, 73 Cuda Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango Only previous Non-Mopar: Schwinn Tornado
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Re: By pass ballast resistor with MSD
[Re: Dougsmopars]
#486500
10/03/09 11:14 PM
10/03/09 11:14 PM
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Joined: Dec 2003
Posts: 5,314 Carstairs, Alberta, Canada
dave571
master
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master
Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
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IT is a common myth that the resistor has to be removed with msd.
If you wire the MSD as per the instructions, it specifies that a ballast is not used with msd. true. BUT it also specifies that the old coil + wire can be used as the switch on wire for the msd unit, AND that the reduced voltage on that wire,will turn on msd.(the msd is supposed to be wired directly to the battery for its main power feed, not the old coil + wire. The old coil wire is now used as an on signal)
What is meant by the statement that there is no ballast used with msd, is that there is no ballast resistor in the coil positive wire between the msd unit and the coil, not that the one on the car has to be removed.
The last MSD I installed even specified, that it may be necessary to install a ballast in the on trigger wire, because even a small amount of voltage on that wire( a couple of volts), will keep the msd on, and may cause a situation where turning off the ignition switch won't shut the car off.
It'll work either way, and many run without the factory resistor, and many run with it, but if a change in running is experienced with the ballast removed, there was something else wrong prior to removing it.
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