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Coil Types ?

  • Thread starter Thread starter straycat
  • Start date Start date
S

straycat

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I have decided to replace my suspect coils with standard replacements, but I have a question about which type to use:

Is there a difference between coils from bikes with cdi and ones with points?
I seem to remember reading that they should have different resistancies, but I see coils listed on ebay covering all (GS550) models 77 to 85 .:confused:

It's the last piece of a very slow process of elimination. I want to get it right !

thanks

straycat
 
Stock coils are 5 ohm, used for both points & cdi ignitions...

Your '80 550 has a cdi ignition - you can use either 3 ohm OR 5 ohm with that ignition. Most members use the "green" dynacoils (3 ohm), which gives them the option to use a Dyna S ignition down the road if needed.

Points ignition need 5 ohm - lower ohms will burn them out.
 
Thanks for the info. My 80 ET is a UK model and has points, so I will order the ones listed for older models,which should be 5 ohms.

thanks

straycat
 
GS series bikes did not come with a CDI (capacator discharge ignition). They came with points or transistorized (breakerless). What you should do is determine what resistance is required for your particular application and buy the coils that meet those specs. If you do a search on this site you'll find the information readily available.

If you ask for coils for a bike with CDI you'll get coils made for CDI which would likely fry your ignition system's ignitor box and they ain't cheap.
 
Good.
Just to clarify - if your bike has points, you want 5 Ohm coils. If your bike does not have points, you want 3 Ohm coils.
 
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