3 ohm coils or 5 ohm coils 1979 GS750?

[Greg O.]

I want to replace the original coils on my 1979 GS 750L. It still has the points, and I may keep it that way for now, and change to a Dyna S ignition down the road. I found Accel Super coils with wires and boots for $132. However they are 3 ohm coils. Will 3 ohm coils work with points, or will it eat the points. If I use 5 ohm coils, will they work with the Dyna S ignition?

I did a search and read a lot of threads, but didn't really find an answer.

Thanks,

Greg

[Steve]

Your bike needs the 5 ohm coils now, but if you are switching to Dyna later, you will need 3 ohm coils.
Compromise...get the 3 ohm coils and a couple of 2 ohm ballast resistors. When you get the Dyna, ditch the resistors.

.

[Greg O.]

THanks Steve, the ballast resistors crossed my mind.

Besides having to keep the points in good working order, is there a big advantage to using Dyna S ignition, such as hotter spark?

Greg

[Nessism]

Instructions for the Dyna S says it's designed to work with 5 ohm coils, but 3 ohm will work fine as well. The stock coils are actually rated at 4.5 ohms (at least on my '79 550 that is). 3 ohm coils with ballist is a fine way to go, just trying to provide information.

[Suzuki_Don]

Your bike needs the 5 ohm coils now, but if you are switching to Dyna later, you will need 3 ohm coils.
Compromise...get the 3 ohm coils and a couple of 2 ohm ballast resistors. When you get the Dyna, ditch the resistors.

.

Hi Steve. How do you hook up the ballist resistors.
Regards Don

[n1elkyfan]

Just wire it inline with the Coil.

[doctorgonzo]

Just wire it inline with the Coil.

Yeah one wire is from kill switch and other from ignition I would think.

[Greg O.]

Splice the resister into the hot side of the coil.

[Greg O.]

Has anyone mounted the Accel coils on a 750L? I was wondering about fitment and room.

Greg

[doctorgonzo]

Splice the resister into the hot side of the coil.

Yep. I think stock coils have a pos and neg. Dyna do not, can be reversed and doesn't matter. Hot from kill switch (orange and white probably) to resistor, then on to coil. Someone better than me with electrics chime in, but you'd probably want to check your voltage loss to coils before you put the extra resistance in there. Maybe do the coil relay mod while you're at it.

[andrewclaycomb]

Has anyone mounted the Accel coils on a 750L? I was wondering about fitment and room.

Greg

When I got my bike, it had accel coils. It fit fine on my 750E.

The coils got replaced when I installed my Dyna S to Dyna 3 ohm coils.

[Steve]

Has anyone mounted the Accel coils on a 750L? I was wondering about fitment and room.

Greg

Can't speak for fit on a 750, but my wife's 850L and my son's 850 both came with Accel coils. No problems with room or fit.

.

[Greg O.]

Thanks everyone,

I am going to order these coils from Accel. Great price including wires, if you don't mind yellow. A friend of mine put them on his Yamaha, and I think they look great, but beauty is in the eye of the beholder. Here is the link if anyone is interested in new coils. $132.95 plus S&H $13.95, a little high for S&H.

http://www.mawonline.com/newsite/accel-coil_kits.htm

Greg