97 M750 5 or 3 OHM Dynatek Coils ?

[Von Eisen]

G/day guys ... Im looking at fitting some Dynatek ignition coils to my 1997 M750 build, should I be looking at 5 OHM or 3 OHM units ? ...  Any advise will be much appreciated.

Thanks and Brgds

[Von Eisen]

After some more research, I will answer my own question ... Ive borrowed this from another Monster forum, where another rider asked the same question as myself.

Q. Why does Dynatek recommend 5 ohm coils for street use and 3 ohm coils for racing?

A. The resistance of the coil determines how much current flows through the ignition system. The 3 ohm coils, because of their lower resistance, pass more current and therefore run warmer than the 5 ohm coils. If the coils are located where they receive good airflow and are away from engine or exhaust heat, then 3 ohm coils will generally give reliable service on the street. However, when the coils are located under the tank, between the cylinders, or close to the engine with a tight fitting cover, 3 ohm coils may overheat. This is most likely to occur under ³worst case conditions², such as creeping along in traffic on a hot day in Arizona (this isn¹t so great for an air cooled engine either!). Rather than get into the specifics of every application we make the general recommendation - 5 ohm for street, 3 ohm for race.

[koko64]

Cool.
Cheers.

[d3vi@nt]

FWIW, I emailed Dynatek directly with some questions a while back. They replied quickly with a very thorough and informative response.

I'd definitely hit them up if you have any doubts or further questions. 

[ducatiz]

I've used the 5ohm for years on my 95 SS and they perform well.  I have heard some issue with the 3ohm.  Look on CaCycleworks site, he's done testing with both.

The stock ones are 5ohm