Ignition??

junior barns · 09-10-2010, 06:40 PM

How much should an alternator put out (amps) in order to run an MSD system(6al or ditital 7)????

sscrewcheif · 09-10-2010, 07:38 PM

it only needs to put out enough to keep the battery charged.... the ignition runs off of the battery. If the battery is charged to capacity then you shouldn't need an alternator on at least 4 passes back to back type runs.

junior barns · 09-10-2010, 08:25 PM

Quote:

Originally Posted by sscrewcheif

it only needs to put out enough to keep the battery charged.... the ignition runs off of the battery. If the battery is charged to capacity then you shouldn't need an alternator on at least 4 passes back to back type runs.

Thanks

are the amps or the volts more important? My alt is puting out 40.6 amps and 14.08 volts at 2000 rpm. The box says it is a 50 amp alt!

ss3011 · 09-10-2010, 09:14 PM

How did you measure 40 amps ? If the load on the alternator is lower than 50 amps , then that's all it will put out . I think a MSD-7AL uses about 12 amps, depends on the rpm .

junior barns · 09-10-2010, 09:59 PM

Quote:

Originally Posted by ss3011

How did you measure 40 amps ? If the load on the alternator is lower than 50 amps , then that's all it will put out . I think a MSD-7AL uses about 12 amps, depends on the rpm .

Hooked out tester up then it said to bring rpm up to 2000 rpm and hold (approx 30sec) then it said to let idle (again approx 30 sec) test done. And this was the reading I got>

And the idle amps were around 29

sscrewcheif · 09-13-2010, 04:24 PM

That sounds pretty normal....assuming you tested it load free?

09-10-2010, 06:40 PM	#1
junior barns Senior Member Join Date: Jun 2006 Posts: 541 Likes: 11 Liked 20 Times in 14 Posts	Ignition?? How much should an alternator put out (amps) in order to run an MSD system(6al or ditital 7)????

09-10-2010, 07:38 PM	#2
sscrewcheif Junior Member Join Date: Jul 2007 Location: southern california Posts: 83 Likes: 1 Liked 0 Times in 0 Posts	Re: Ignition?? it only needs to put out enough to keep the battery charged.... the ignition runs off of the battery. If the battery is charged to capacity then you shouldn't need an alternator on at least 4 passes back to back type runs. __________________ Big wheelies are for show!! Go fast or go home!!!

09-10-2010, 09:14 PM	#4
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 909 Likes: 70 Liked 239 Times in 114 Posts	Re: Ignition?? How did you measure 40 amps ? If the load on the alternator is lower than 50 amps , then that's all it will put out . I think a MSD-7AL uses about 12 amps, depends on the rpm .

09-13-2010, 04:24 PM	#6
sscrewcheif Junior Member Join Date: Jul 2007 Location: southern california Posts: 83 Likes: 1 Liked 0 Times in 0 Posts	Re: Ignition?? That sounds pretty normal....assuming you tested it load free? __________________ Big wheelies are for show!! Go fast or go home!!!