28 hp Speeditwin mag plate

[Brokeback Johnson]

Picked up a 1964 28 hp Evinrude with a floppy mag plate. I have a 62 40 hp Gale or a 57 Javelin for parts motors. Will either of these plates work on the newer engine?

 

[F_R]

Re: 28 hp Speeditwin mag plate

The '57 is iffy. They changed the flywheel and armature plate sometime back then. Similar, but the newer style armature plate has a groove cut around the outer edge that the flywheel runs in. It is a firestop seal.

Also, the '57 won't have a hole for the upper cylinder kill wire grommet. But you can drill one.

 

[Daviet]

Re: 28 hp Speeditwin mag plate

You didn't post any model numbers, but by doing a quick check, the 62 40hp uses the same mag plate, PN 580332. The 57 does not.

 

[F_R]

Re: 28 hp Speeditwin mag plate

The fact that it does not have the hole for the kill wire is enough to give it a different part number. So it still boils down to the firestop groove. Personally I don't think it has but not positive about that.

 

[Brokeback Johnson]

Re: 28 hp Speeditwin mag plate

Always an education on this great site! Its the first time that I have heard about the firestop groove. Really enjoy these old outboards and tinker with them as a hobby all summer long. In the winter its vintage snowmobiles. Thanks fellows for your insights.