this all sounds great and all but i rack 8k in 2 months.. i use it for everything. its my daily, and my work truck.. is there a happy aftermarket middle between STOCK/OEM REPLACEMENT and a full MSD system? i would like to get better spark.. but dont think my budget can allow for an MSD system

 

I show Accell making a dizzy cap/rotor for the LA engines, but not the magnum's. Not quite sure what's up with that.

edit, found the V8 cap - http://www.jegs.com/i/Accel/110/1203...oductId=752075

and V6 cap - http://www.jegs.com/i/Accel/110/1203...oductId=752075

and rotor - http://www.jegs.com/i/Accel/110/1303...oductId=752077

I'd want to call accel though, figure out why the V6 cap doesn't cover 00-02 and the rotor has a non-360 note.

 

well if that doesnt cover the 00 3.9L ... its kinda useless to me... haha i am looking myself so if i find anything ill post it up here

 

Yea I don't know what would have changed from 99-00 on the V6 specifically. Might be bad labeling, who knows.

 

sitting here doing my normal dangerous thinking.

partial source: http://www.moparchat.com/forums/showthread.php?t=26558

On ram and dakota coil, he measured:

Primary Resistance 0.99 ohms (1.17 ohms on Dakota)
Primary Inductance 6.25 milliHenrys (6.36 Dakota)
Secondary Resistance 12,250 ohms (14,900 Dakota)
Secondary Inductance 41.9 Henrys (45.4 Dakota)
72:1 turn ratio

MSD Digital 6A:

Spark Energy: 135-145 mJ per spark
Primary Voltage: 520-540 volts
Secondary Voltage: 45,000 volts
Spark Series Duration: 20° Crankshaft Rotation [600 uS at 5000 RPM]

MSD HVC-6 coil:

Turns ratio: 100:1
Primary resistance: .02 OHMs
Secondary resistance: 1.38K OHMs
Inductance: 7 mH
Maximum voltage: 42,000 Volts (Tested with 6AL Ignition)
Peak current: 300 mA
Spark duration: 200 uS


140mJ is .140 Watt-Seconds, which is 0.000264 amp-seconds at 530 volts. Over a 200 micro-second (0.0002 second) time span, that's a current of 1 amp [funny how that worked out]. So the MSD box provides 530V @ 1A on the primaries.

530 volts * 100:1 turn ratio is 53,000 volts, but the system caps out at 42,000 volts.

Some food for thought, the dielectric strength of air is 30kV per centimeter or 76.2kV per inch. So a 42kV coil hit could jump an air-only gap of 0.55 inches.

OP here: https://dodgeforum.com/forum/dodge-r...y-voltage.html

Measured a peak of 147 volts across the coil. 147 V * 72 turns = 10,584 volts

That could only jump a 1/8" gap in air.