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Old 09-02-2014, 08:53 AM   #1
Ricrellim OP
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Time to replace the ignition coil

I have an 89 R100rt (Naked) and I just had a roadside mechanical that stranded me overnight in Steamboat Springs, Co (I know that there are worse places for sure).

I was heading out of town in a heavy rain storm and the bike just died (like it ran out of gas).

A fellow BMW rider helped me do some roadside diagnostics and we determined it was the crappy gray cracked ignition coil. I dried it out overnight and was able to ride home (200 miles) without issue.

I have already upgraded the charging system to the Enduralast II but I need some advice on the ignition replacement.

I am probably opening a can of worms here but, let me hear everyone's opinion.
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Old 09-02-2014, 03:49 PM   #2
Warin
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What ever ignition system you chose to use .. it will have an ignition coil.

There is nothing 'wrong' with the design of ignition system you have, just replace the faulty part and ride on. Same as replacing a worn out tyre.
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Old 09-02-2014, 08:14 PM   #3
Bill Harris
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+1. First step is to replace the Crack-o-matic coil. A lot of people favor Dyna coils.

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Old 09-02-2014, 08:21 PM   #4
Tourbus
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Harley Davidson electronic ignition coil from the 1980's-1990's mounted on a short piece of light angle iron with spark plug leads pointing down. Even the small wire terminal nuts will transfer over. Problem solved. This coil is carried by ever Harley dealer.
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Old 09-02-2014, 08:45 PM   #5
H96669
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Crappy grey coil.... Was nice meeting you guys but for the circumstances.And you eventually got out of there under your own power.
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Old 09-03-2014, 08:18 AM   #6
Ricrellim OP
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Hey dancing frog icon, are you the super kind Dude that helped me?
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Ricrellim screwed with this post 09-03-2014 at 08:30 AM
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Old 09-03-2014, 05:59 PM   #7
H96669
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My grey hair....I did get out of the raingear a little later and got the airhead dirt off my hands.
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Old 09-03-2014, 06:07 PM   #8
silverhead
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Can you repair them after they dry out by painting them several times? I used to do that with VW ignition coils because the same thing would happen if you drove through a car wash or rain storm, but they'd work fine once dried out. Painting them at least got me around until I bought a new coil and then I kept the painted one in my stash at home.
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Old 09-03-2014, 06:12 PM   #9
DustyOne
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dip 'em.......what about that Plastic-Dip Stuff???

shoot.....you can even just about pick yer own color too!!

.
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Old 09-03-2014, 06:37 PM   #10
MotorcycleWriter
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Quote:
Originally Posted by Tourbus View Post
Harley Davidson electronic ignition coil from the 1980's-1990's mounted on a short piece of light angle iron with spark plug leads pointing down. Even the small wire terminal nuts will transfer over. Problem solved. This coil is carried by ever Harley dealer.
+1

Just did this convert on my '89R100GS and it runs better than it has since I bought it. Same crappy, gray cracked coil, same symptoms.
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Old 09-03-2014, 06:38 PM   #11
MotorcycleWriter
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Originally Posted by silverhead View Post
Can you repair them after they dry out by painting them several times? I used to do that with VW ignition coils because the same thing would happen if you drove through a car wash or rain storm, but they'd work fine once dried out. Painting them at least got me around until I bought a new coil and then I kept the painted one in my stash at home.
I tried filling the cracks with JB Weld then strapping a bunch of zipties around the coil to keep it from separating any further. Didn't fix it but wasted several hours. Go Harley. You'll be glad you did, and so will your wallet!
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Old 09-03-2014, 07:47 PM   #12
Bill Harris
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Quote:
Originally Posted by H96669 View Post
Crappy grey coil.... Was nice meeting you guys but for the circumstances.And you eventually got out of there under your own power.
And may you be rewarded tenfold for your kindness...

--Bill
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Old 09-03-2014, 08:31 PM   #13
H96669
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Quote:
Originally Posted by silverhead View Post
Can you repair them after they dry out by painting them several times? I used to do that with VW ignition coils because the same thing would happen if you drove through a car wash or rain storm, but they'd work fine once dried out. Painting them at least got me around until I bought a new coil and then I kept the painted one in my stash at home.
Conformal coating??? That should be available at most electronic supply stores.

Ignition system waterproofer??? That's getting hard to find but sure looks just like conformal coating.

Yes I did look at his coils...didn't look cracked but hard to tell when in place.

Wet VWs....had a few of them.The wettest was from backing into a lake.
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Old 09-03-2014, 09:09 PM   #14
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Aren't the green HD coils 3 ohm? If so, I think you are better off better matching up the coil to the ICU. The gray coils are around 1ohm. ICU with turquoise lettering? I would run a blue .7 ohm Dyna coil. Other ICU? I would run around 1.2 ohms like a gray Dyna.
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Old 09-04-2014, 12:52 AM   #15
Ricrellim OP
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Yes Bill, he was a savior. He knew the problem before we ever removed the tank. I hope I can continue to learn enough to help others as he did for me. I honestly didn't know how to check for the spark and didn't know how careful I should be removing the plugs.

Btw his bike is sweet and one day I bet I will own a k or gs bike.

Ricrellim screwed with this post 09-04-2014 at 12:53 AM Reason: Typos
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