Best Battery To Run Full MSD Ignition

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IRISH RT

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Purchased A Yuasa 620 CCa Commercial Battery over a year ago and Had It Tested and Its only 77% healthy , Basically cannot keep up with Current draw,

Batteries Here In NZ are branded Differently , But We Do Have The Optima Series

Whiich would be Better Yellow Top or Red


Seemingly I need !3.5 Volts Constant to run Msd


Is a regulator Needed ???
 
An Odyssey would be a better choice than an optima. You should double check on MSD's website but I believe they should operate fine on 12 volts. I have never had an issue with my Digital 6. Make sure its a dedicated 12-volt source and that you have a good ground.

http://www.odysseybatteries.com/
 
Ive used a optima yellow for about 6 years now with no trouble.
 
IRISH RT said:
Purchased A Yuasa 620 CCa Commercial Battery over a year ago and Had It Tested and Its only 77% healthy , Basically cannot keep up with Current draw,

Batteries Here In NZ are branded Differently , But We Do Have The Optima Series

Whiich would be Better Yellow Top or Red


Seemingly I need !3.5 Volts Constant to run Msd


Is a regulator Needed ???
Click to expand...

not enough info

this a race car?

you run a alternator?

this 12, 14, 16?? volt battery?
 
battery does not run car. alternator does. you need to figure out if alternator working right
 
DDodger said:
battery does not run car. alternator does. you need to figure out if alternator working right
Click to expand...

Yep Worked Out The Amps It Draws 50 Total On 75 amp Altenator.



Blue top tested at 900 cca blue Top,

Car ran 13s flat at the weekend ,
 
is it ok to connect my msd 6al to the alternator output rather than direct to the battery being that I have wire already going from alt to bat would save me rewiring and lengthening wires
 
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