Firestone (Scott-Atwater) Coil Swap

[wbeaton]

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

[wbeaton]

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

[Buccaneer]

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!

[frankr]

I’m really surprised that the flywheel magnets aren’t hitting the plug wires. Good job with a tough situation.

[wbeaton]

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

[Mumbles]

Nice work Wayne and yes, the OMC coils do fit the Scotty lams nicely!

• This reply was modified 6 years, 4 months ago by Mumbles.
• This reply was modified 6 years, 4 months ago by Mumbles.

[wbeaton]

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

[StevieD]

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.

[Tubs]

A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

[Author]

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