[Selzerian]

Hey guys, i've been working on a old 1974 Suzuki GT185 lately. The final problem i'm faced with is the ignition coils. I tested both of them a while back and one was shot, so i decided to buy some generic 12v motorcycle coils as a pair for symmetries sake. So the new coils i got are WAY smalled than the nippondenso's that came stock with the bike. they also have a WAY lower primary impedance, reading about 1.1 ohms, while the old nippons were reading about 4.8.

So did i screw myself by not getting the right coils or can i wire up resistors in series to get the ohms correct? by the looks of the situation these new little coils start to heat up FAST and get to the point of almost boiling over in 10 seconds flat, however they do spark great. its near impossible to find coils for this bike anywhere, so if i can just mod the wiring to these new ones to make it work it would be awesome.

 

[Easy Rider]

So did i screw myself by not getting the right coils
or can i wire up resistors in series to get the ohms correct?

Yes and no, in that order.

You need to get some coils nearer to the original spec's......or you run the risk of damaging the ignition components.
And finding a replacement CDI module for a bike that old might be really difficult....and expensive.

If the original coils still measure good, you would be MUCH better off putting them back in until you find new ones.

 

[XJ550H]

you can buy the correct coils at www.bikebandit.com