Ballast resistor for Chrome Box ignition
#1629992
06/07/14 11:28 AM
06/07/14 11:28 AM
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Joined: Apr 2006
Posts: 3,675 Akron, Ohio U.S.A.
roadhazard
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OP
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Akron, Ohio U.S.A.
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What is the recommended ohm ballast resistor for the Chrome Box when using an Accell super stock coil? I need a spare for a trip and would measure mine but my meter isn't cooperating and don't trust the reading. Thanks for the assistance
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Re: Ballast resistor for Chrome Box ignition
[Re: roadhazard]
#1629993
06/07/14 12:05 PM
06/07/14 12:05 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Circle Track
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Lincoln Nebraska
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The nominal MP ballast ohms for the orange/chrome boxes is 1.25 ohms but that is with a chrysler coil. Accell told me to use .8 ohms with the super coil, the big yellow beast not the super stock round canister yellow coil you have and I ran it (the SC) 30 yrs ago with NO ballast & it never burned out. I think you could grab any ballasts you have laying around & they'd work fine. You have ALOT of leeway on how little ballast you can get by with and not burn out the coil and likely all of your spare ballasts will have plenty of resistance.
live every 24 hour block of time like it's your last day on earth
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Re: Ballast resistor for Chrome Box ignition
[Re: RapidRobert]
#1629994
06/07/14 12:07 PM
06/07/14 12:07 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
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as Robert alluded too, ballast values depend on the coil not the ECU.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Ballast resistor for Chrome Box ignition
[Re: 383man]
#1629997
06/08/14 06:00 AM
06/08/14 06:00 AM
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Joined: Aug 2004
Posts: 214 Hamburg / Germany
Den300
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enthusiast
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Hamburg / Germany
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MSD blaster II coil, chrome box, 0.25 ohm resistor. 8 years, never had a problem
Hamburg/Germany
69 Chrysler 300 446cui Dual Quad 12.64 @ 110.7
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Re: Ballast resistor for Chrome Box ignition
[Re: Den300]
#1629998
06/08/14 10:15 AM
06/08/14 10:15 AM
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Joined: Feb 2012
Posts: 199 NC
1970A66
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Quote:
http://www.moparts.org/Tech/Archive/elec/4.html
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Re: Ballast resistor for Chrome Box ignition
[Re: 65cuda]
#1630000
06/09/14 12:37 AM
06/09/14 12:37 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
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You realize the function of a ballast resistor is to limit the current flow through the coil so it does not burn out. The lower the ballast resistance the more current flows thru the coil.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Ballast resistor for Chrome Box ignition
[Re: Supercuda]
#1630002
06/09/14 08:56 AM
06/09/14 08:56 AM
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Joined: Apr 2010
Posts: 4,154 bethlehem pa
mikemee1331
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bethlehem pa
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Quote:
You realize the function of a ballast resistor is to limit the current flow through the coil so it does not burn out. The lower the ballast resistance the more current flows thru the coil.
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Re: Ballast resistor for Chrome Box ignition
[Re: mikemee1331]
#1630003
06/09/14 12:40 PM
06/09/14 12:40 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Circle Track
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Lincoln Nebraska
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If you have ~1.5 ohms total (coil+ballast) on an std ECU setup (not msd/not CD) then you'll be fine
live every 24 hour block of time like it's your last day on earth
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Re: Ballast resistor for Chrome Box ignition
[Re: GomangoCuda]
#1630005
06/09/14 04:38 PM
06/09/14 04:38 PM
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Joined: Apr 2006
Posts: 3,675 Akron, Ohio U.S.A.
roadhazard
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OK, well I finally have an OHM reading on my ballast resistor I can trust. I've been running a 1.25 OHM and it has been working perfectly fine. I however tried another ballast that measures .6 OHM and it runs like garbage So I'll go pick up a couple 1.25's and roll with it! Thanks for all the responses
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Re: Ballast resistor for Chrome Box ignition
[Re: RapidRobert]
#1630007
06/09/14 08:22 PM
06/09/14 08:22 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
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up yours
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More current means more heat. Had a Accel coil quit working when hot on me only to work fine when cooled off. Might be getting into thermal failure territory with the coil.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Ballast resistor for Chrome Box ignition
[Re: Supercuda]
#1630008
06/16/14 03:28 PM
06/16/14 03:28 PM
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Joined: Feb 2003
Posts: 515 Dayton, Ohio
65cuda
mopar addict
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mopar addict
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Dayton, Ohio
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That's what I had a chrome round Accell coil with chrome box. Running the .25 resistor that came with the MP kit. coil got so hot it would burn you. quit on me. cooled down would start again. So I put on the MSD 8207 coil. it got so hot just running it to test in driveway it swelled up and split. put on second 8207 with the MSD .80 resistor. running in driveway again it got up to 220 degrees. ( reading with heat gun) afraid to drive it any where now. it might bust too. thinking about putting in a whole MSD system. only have 7.5 volts with fans on at coil. Talked to MSD they said the voltage is on target.
65 Cuda 360,3.23 SG-13.97 @99.4, 88 D100, 2000 Kota Qcab, 71 Duster 416 11.84 @110., 73 Imp ,(2)72 & (1)71 Dart Swingers GarysMocars Legendary Dealer
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