Has anyone installed #HS-414...$260.00...Hot-Shot kit? I already have the Speed Star ignition module. I was curious what you thought of them. Or do you have other recommendations.

http://www.sscustomcycle.com/products/engine/roadstar.shtml

Do they say any where what the ohms are on the coils?

I've said it before. A coil will only produce as much spark as is necessary to jump the gap. If the stock coils were already doing that, no hotter coil will help. It'll only produce the same amount of spark to arc the same gap as before.

Hotter ignitions are only beneficial where increased compression, or a supercharging, or some other mod requires higher energy to generate a spark in a more "hostile" combustion chamber environment.

Only highly modified engines, requiring a hotter ignition to arc the plug gap where high compression, exotic fuels, etc., necessitate more power are benefitted by something like that Hot-Shot kit.

Save your money for something that will actually benefit your ride.

If your stock coils are failing... then go ahead and replace them because you need to.

So as I read this, Performance Coils are a mute point with a mostly stock configuration? Please enlighten me as I am moving from the front end mods & maintance to the Ignition wich is next on the backbone towards the rear of the bike and was considering a Coil upgrade.

Questcap wrote:
I've said it before. A coil will only produce as much spark as is necessary to jump the gap. If the stock coils were already doing that, no hotter coil will help. It'll only produce the same amount of spark to arc the same gap as before.

Hotter ignitions are only beneficial where increased compression, or a supercharging, or some other mod requires higher energy to generate a spark in a more "hostile" combustion chamber environment.

Only highly modified engines, requiring a hotter ignition to arc the plug gap where high compression, exotic fuels, etc., necessitate more power are benefitted by something like that Hot-Shot kit.

Save your money for something that will actually benefit your ride.

If your stock coils are failing... then go ahead and replace them because you need to.

Thats correct. Just because a coil is capable of putting out higher voltage don't mean that you need it or that it ever will put out more than your stock coil. If your using stock heat range plugs and they are gapped correctly it will only use the amount of voltage needed to jump the gap of the sparkplug regardless of the max output of the coil.

Wow I just learned to save some money! And electricity! Do stronger coils tax the rectifier more I wonder.

Will a stronger coil not provide better burn? Looking for anything to counter the dreaded SvS. I was considering this instead of taping the heck out of my stock coils, I hear they leak.

If you want to counter SVS make sure your carb is properly jetted, you have the proper amount of oil in the bike and if you have an external leak in your coil then it's bad replace it. But it still needs the same amount of voltage to jump the gap of the sparkplug regardless of stock or highoutput coil. High out put means just that. It is capable of more max voltage than stock. But what they don't tell you that it never will put out more because it is not needed. If it takes for instance 10,000 coil output volts to jump a .035 sparkplug gap it don't matter what kind of a coil you have it still only takes 10,000 volts (these #'s are only for conversation purpose) a stock coil might put out 20-30,000 and a high output might put out 50,000 but if it only needs 10,000 the rest is just alailable. (and waiting for you to touch something wrong so it can zap you) As they say Don't ask me how I know that.

Dave has it exactly right. Whatever voltage is necessary to arc the gap is what a coil will produce, and no more. A hotter coil will produce no more spark voltage than a stock coil, if the stock coil was already firing your plugs. Save your money... blow it on something else!

Thanks Dave for your input re high output coils. If I understand this correctly, then for a "stock engine" with a stock coil beginning to break down (arcing) it should be replaced with new stock coil. There is no need to go to a Nemesis or Dyna Teck high output coil because your never going to use the excessive voltage they put out. You will use some of the voltage but not all of it, so why spend the extra $ on something you'll never 100 % use from.