Building a better ignition system.

[nategs550]

I've been looking into using HEI modules to replace my ignitor on my GS550. Here's the information:

Has anyone else ever done this? Can't find a lot of information on it. Seems simple enough and I've already got the parts laying around.

My next question is the ignition coils themselves. I remember a few years ago I switched to a escort EDIS coil on my Yamaha FZR600. It allowed a much wider gap on the plugs which smoothed out my idle on it. Upon researching more my stock coils are supposed to be 5ohm I believe whereas a edis coils is 0.5 - 0.7 ohms. Can an HEI module take the extra current? Anything else I'm missing that could cause this to go wrong? I was looking up hotter coils for hei ignitions and the primary side seems close but that's not a wasted spark setup. I'm pretty new to this electrical stuff so any information can help. Thanks in advance guys.

 

[TomTerrific]

The HEI module uses a stock coil with virtually zero ohms. Any coil will work but more ohms on the primary means less heat. Use a good heat sink with the module and use the heat transferring paste on the back. There is no doubt for me that a big super powered spark makes for a better performing old engine.

Are you planning on replacing the entire black box? The original electronic ignitions contain the advance so the HEI would only carry the high current of the coil. I guess you know this but allot of folks read these posts.

Tom

 

[nategs550]

I think mine being the first year on electronic ignition retained a mechanical advance. Got to look into that more.

 

[nategs550]

I think mine being the first year on electronic ignition retained a mechanical advance. Got to look into that more.

Upon reading some more I'm fairly certain I have a mechanical advance.