MSD Blaster 2 coil

[Kendog 170]

Any issues running a Blaster 2 with 0.8 ballast resister with stock electronic ignition and Dizzy?

 

[halifaxhops]

If it is the 1.5 ohm blaster no.

 

[memike]

If it is the 1.5 ohm blaster no.

Agree, been running one on the system you set up for me. Zero problems, you set my distributor up perfectly Hoppy. Very happy with Hoppy ignition

 

[Kendog 170]

It's this one with 0.80 resistor. I thought that was recommended. Your saying 1.5? THX
MSD Ignition 8200MSD MSD Blaster 2 Ignition Coils | Summit Racing

Standard doesn't say what resistance. Would this be a 1.50 ballast?
1974 DODGE DART 5.9L 360cid V8 Ballast Resistor | Shop Now at RockAuto

 

[halifaxhops]

Nope it will burn up the ecu.
Primary Resistance:
0.700 ohms

 

[halifaxhops]

Ken coils are misleading especially "universal" ones. GM like .3, ford is like .7 I think, Most mopar is 1.5 Have to do the research on them. Blasters come in all of those ratings, then get into say MSD etc gets confusing fast

 

[halifaxhops]

 

[Kendog 170]

I've got Blaster2 in both rides, so I'll have to get 1.50 ballasts then. I've been using the 0.80 ones. I'm glad I asked.

 

[halifaxhops]

Which ones though? They make a few ratings usually on the label.

 

[Kendog 170]

I'll have to get the # off them when I get home.

 

[halifaxhops]

Should have a ohms rating Ken.

 

[Kendog 170]

One was a kit. coil and 0.80 resister. Should I switch to 1.50 to protect ecu?

 

[Vaanth]

One was a kit. coil and 0.80 resister. Should I switch to 1.50 to protect ecu?

It's this one with 0.80 resistor. I thought that was recommended. Your saying 1.5? THX
MSD Ignition 8200MSD MSD Blaster 2 Ignition Coils | Summit Racing

Standard doesn't say what resistance. Would this be a 1.50 ballast?
1974 DODGE DART 5.9L 360cid V8 Ballast Resistor | Shop Now at RockAuto

The MSD 8200MSD, or 8200, ignition coil has a 0.7 ohm primary resistance. With a 0.8 ohm resistor, and assuming ~12.5 volts DC at the Ignition RUN circuit, with the 8200 coil, static current through the switching transistor of the electronic control unit (ECU) will hit 8.3 amps. 8.3 amps will push the limits of a stock production Chrysler ECU, and exceed the current carrying capability of modern aftermarket ECUs leading to overheating and possible failure of the ECU. High Performance ECUs such as the Mopar Performance/Direct Connection P4120534, P4120600, or P3690256 can handle more current.

As a "rule of thumb", for the Chrysler ECU system, strive for a combined total resistance of the coil, ballast resistor, wiring, connections, and effective transistor resistance of two to three ohms total at 70-80 degrees Fahrenheit. This limits the ECU switching transistor and coil primary current to about four to six amps peak. Although the transistor can actually sink more current in earlier Chrysler high performance and production ECUs,as well as earlier aftermarket ECUs, this conservative current level is easier on ECUs while still delivering adequate spark energy to the spark plugs.

If not using a stock or stock replacement coil, an Accel 8140, 8140C or Mallory 29219 ignition coil is a better match to the stock style Chrysler electronic ignition system. However, to keep the MSD 8200 with a stock type ECU, increase the value of the ballast resistor as earlier advised. Use a 1.2 - 1.5 ohm ballast resistor instead of the 0.8 ohm resistor.

The following table summarizes select ignition coils with resistance values.

NOTE: Listed coils are oil filled canister type unless otherwise noted.

Brand	Part Number	Primary Resistance	Secondary Resistance	Notes
Accel	8140 Super Stock 8140C Super Stock	1.4 ohms	9.20K ohms	8140 = painted 8140C = Chrome
Accel	8145 Super Stock 8145C Super Stock	0.7 ohms	10.80K ohms	8145 = painted 8145C = Chrome
Accel	140001	0.7 ohm	11.80K ohms	Super Coil. Supplied with a 0.8 ohm ballast resistor.
Accel	140306	0.2 ohm	7.3K ohms	Chrome “Racing Coil”
Borg Warner	E-62	1.4 ohms	14.6K ohms	‘406’, epoxy
Echlin	IC5500	0.7 ohm	11.80K ohms	Supplied with a 0.8 ohm ballast resistor. Same as Accel Super Coil.
Filko	EP2	1.4 ohms	14.6K ohms	‘406’, epoxy
Kem	312A	1.4 ohms	14.6K ohms	‘406’, epoxy
Mallory	29440	0.6 ohm	11.3K ohms	Non-canister shape. ProMaster
Mallory	29219	1.36 ohm	10.87K ohms	Chrome
Mopar Performance	P3690560	0.2 ohm	7.3K ohms	Black or Chrome “Racing Coil” Use 0.25 ohm ballast resistor for racing. Same as Accel 140306.
Mopar Performance	P4120889	0.7 ohm	11.80K ohms	Same as Accel Super Coil.
MSD	8200	0.7 ohm	4.50K ohms	Chrome. 0.8 ohm Ballast resistor required for points.
MSD	8202	0.7 ohm	4.50K ohms	0.8 ohm Ballast resistor required for points.
MSD	82023	0.7 ohm	4.50K ohms	Blaster 2, black,
MSD	8203	0.7 ohm	4.50K ohms	Blaster 2, chrome. Supplied with a 0.8 ohm ballast resistor. Ballast resistor required for points and Mallory Unilite.
MSD	8222	0.7 ohm	4.70K ohms	Blaster 2, black, epoxy, high vibration, 0.8 ohm Ballast resistor required for points.
MSD	8223	0.7 ohm	4.50K ohms	Blaster 3, red, tall tower, 0.8 ohm Ballast resistor required for points.
Sorensen	SC-29X	1.4 ohms	14.3K ohms	Magnition, epoxy

Depending on the wired system, to assist with 1.2 - 1.5 ohm ballast resistor selection using original or stock replacement ballast resistors, the following table lists part numbers for both four terminal dual ballast resistors and two terminal single ballast resistors resistors:

​

Part Number	Aftermarket	Terminals	Ohms	Notes
3874767	Standard RU-12/RU-12T Niehoff AL125BCM, AL125B E-tron RU-12 Echlin ICR 24 GP EL-401 Accel 150351 Filko CH400 Auto-Tune E-221 E-tron RU12 Sorensen CE-3	4	1.25/5
4106140, 5206436	Wells CR-107/CR-1107 Standard RU-11/RU-11T WVE 6R1007 Airtex 6R1007 Filko CH401 Niehoff AL125C E-tron RU4	2	1.25	No metal strap. Some listings show 5206436 as 1.0 ohm. Others show it as 0.7 ohm. Actual measured value is 1.2 ohm.

NOTE: Actual measured resistance values are not always consistent among part numbers and brands even within a brand's own offerings. Double check all resistors to ensure the value is as desired for the ignition system.

Additional aftermarket resistors are listed in the following table for further direct resistance value selection with resistors not specified as direct Chrysler replacements:

​

Brand	Part Number	Resistance	Notes
Jegs	555-40103	1.0 ohm
Echlin	ICR23	1.2 ohms
Standard	RU-23	1.2 ohms
Accel	150250	1.35 ohms
Echlin	ICR11	1.35 ohms
Standard	RU-4	1.35 ohms
Echlin	ICR34	1.4 ohms
Standard	RU-37	1.4 ohms
Accel	150150	1.82 ohms
Moroso	72390	1.82 ohms

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For more general information about the Chrysler electronic ignition system, see the following:

• Chrysler Electronic Ignition

 

[Bewy]

And there is nothing a Blaster 2 coil will do better than a production coil of similar resistance.....even if you paint it red. Both are canister coils which limit the electrical performance.