Topic: Firestone (Scott-Atwater) Coil Swap – Antique Outboard Motor Club,Inc

This topic has 8 replies, 6 voices, and was last updated 3 years, 8 months ago by The Boat House.

Viewing 9 posts - 1 through 9 (of 9 total)

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December 30, 2018 at 8:32 pm #161555
wbeaton
Participant
Canada Member - 2 Years
I picked up this pretty 1952 Firestone 7.5 hp last fall. It’s in great shape aside from some melted coils. Fortunately, it has the small Phelon coils with the 7/16″ laminates. The OMC universal coils fit right on.

Wayne
Upper Canada Chapter

uccaomci.com
December 30, 2018 at 8:35 pm #161560
wbeaton
Participant
Canada Member - 2 Years
A word of warning if you use the cheap Chinese coils that are so readily available on eBay. They do work well, but the coil is epoxied to the laminates and may break when you press them off.

And here she is purring like a kitten in the test tank.

Wayne
Upper Canada Chapter

uccaomci.com
December 30, 2018 at 9:32 pm #161567
Buccaneer
Participant
US Member
Looks like the original coil didn’t want to let go of the past very easy either.
Can the epoxy of the Chinese coils be scored with an exacto knife to get
them to come off the laminates without busting?
Nice looking Firestone, and handsome reflection in the window. 🙂

Prepare to be boarded!
December 30, 2018 at 9:54 pm #161575
frankr
Participant
US Member
I’m really surprised that the flywheel magnets aren’t hitting the plug wires. Good job with a tough situation.
December 30, 2018 at 10:08 pm #161578
wbeaton
Participant
Canada Member - 2 Years
Buccaneer, I scored the last coil before I pressed it out. I don’t know if it helped or not. since the center laminate is glued the entire way. I’ve pressed off five of these coils now. Only one broke. I’ll be scoring them from now on just as a precaution.

Frank, I wasn’t sure if the plug wires would work in that location, either. I found that pressing the coil all the way down the center laminate to the heels gave a little extra room.

Wayne
Upper Canada Chapter

uccaomci.com
December 31, 2018 at 12:35 pm #161609
Mumbles
Participant
Nice work Wayne and yes, the OMC coils do fit the Scotty lams nicely!
- This reply was modified 5 years, 4 months ago by Mumbles.
- This reply was modified 5 years, 4 months ago by Mumbles.
December 31, 2018 at 1:27 pm #161616
wbeaton
Participant
Canada Member - 2 Years
Thanks, Mumbles. How are those ignition modules working out? Seems like a good solution now that Phelon condensers are $18 CAD each.

Wayne
Upper Canada Chapter

uccaomci.com
August 12, 2020 at 7:18 pm #211469
StevieD
Participant
Hey guys, new guy here with a question. Do you have the part number for the OMC coils you used in this post? I have a 56 Scott Atwater that will need a set of coils and I cant find a definitive part number for coils. Any other info you have would help tremendously!!!! Thanks guys.
August 12, 2020 at 7:48 pm #211473
The Boat House
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