coil
Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
RE: coil
I haven't had this problem on a bike but I did have a cage that would loose a coil every year. The coil was mounted on top of the engine manifold and heat from the motor would literally slow cook the coil. After I movedit to the firewall, no more problems.
Road Master
Joined: Aug 2007
Posts: 1,183
Likes: 1
From: Graham, NC
RE: coil
Yep...
The 2 things that kill electronics faster than anything else are heat and vibration.
I don't know where your coil is mounted, but I bet on an older model bike like that it gets a lot of vibes and some decent heat too.
I don't know if this would help, but on a couple of cars that I built, I mounted the MSD ignition boxes on homemade vibration dampners.
Go to Lowe's and look in the drawers with the generic hardware. They sell rubber corks. I cut them in half and drilled a hole in them to make rubber isolation feet.
It's worth a shot and it only cost a few bucks. In combination with cHarley's suggestion of moving it away from the heat, this may buy you a little extra time.
The only other thing that I could think of would be to check or replace the ignition control module as it may be demanding too much of the coil.
The 2 things that kill electronics faster than anything else are heat and vibration.
I don't know where your coil is mounted, but I bet on an older model bike like that it gets a lot of vibes and some decent heat too.
I don't know if this would help, but on a couple of cars that I built, I mounted the MSD ignition boxes on homemade vibration dampners.
Go to Lowe's and look in the drawers with the generic hardware. They sell rubber corks. I cut them in half and drilled a hole in them to make rubber isolation feet.
It's worth a shot and it only cost a few bucks. In combination with cHarley's suggestion of moving it away from the heat, this may buy you a little extra time.
The only other thing that I could think of would be to check or replace the ignition control module as it may be demanding too much of the coil.
Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
RE: coil
Good idea on the vibration damper washers. Also you can probably find some rubber faucet washers in the plumbing department, ready made with a center hole in them.
A 75 model bike won't have an ICM, he'll have points and condenser, so that should not be an issue it they are in decient shape..
A 75 model bike won't have an ICM, he'll have points and condenser, so that should not be an issue it they are in decient shape..
Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
RE: coil
That may be why Harley moved it to the upper frame in front of the motor in later years.
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Cruiser
Joined: Apr 2007
Posts: 179
Likes: 0
From:
RE: coil
This is a good place to resize.
http://www.bigwebpages.com/big/resize.html
Then you'll have to save it, and use a host like Picturetrail, or Photobucket. You can use the attachment option in the reply, but I've never done that, so I won't try to give you bad info.
http://www.bigwebpages.com/big/resize.html
Then you'll have to save it, and use a host like Picturetrail, or Photobucket. You can use the attachment option in the reply, but I've never done that, so I won't try to give you bad info.
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