Identify an old prop and 2cyl crankshaft

[Beno]

inside diameter on the prop bolthole is 1/2″

outer diameter prop is 5.5″

[Beno]

Steve, I plan to list it when I figure out the part number. but I have no way to know if it’s good.. maybe I should just micrometer the journals?

• This reply was modified 3 years, 5 months ago by Beno.
• This reply was modified 3 years, 5 months ago by Beno.

[billw]

If there are no rust pits, it’s good. Looks like it may be shot where the top seal goes? Other than that, I wish I owned it! As for the prop, I didn’t catch that it was right hand until later. OMCs are left hand. Oops.

Long live American manufacturing!

[Beno]

Looks like frankR has the prop pretty well locked down to being a 7.5hp McCulloch prop.. i would NEVER have known that. Now that i know the basic info i see others online for sale…

I’ll get some better pics of the top journal crankshaft tomorrow

• This reply was modified 3 years, 5 months ago by Beno.
• This reply was modified 3 years, 5 months ago by Beno.
• This reply was modified 3 years, 5 months ago by Beno.

[Tubs]

outboardnut wrote:

Frank your amazing!

He impresses me as well.

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

[Beno]

Here are the measurements..

[frankr]

Whoa, 28-33-40 hp. 1962-70 at least. It does have the breaker cam profile ground on the shaft, above the top main, right?

[Beno]

There is a cam lobe on top. Yes.

[frankr]

Beno wrote:

There is a cam lobe on top. Yes.

Yep, that’s 28-33-40 hp 1962-up

[Beno]

Ok ill start looking for a part number on the crankshaft. 62-up bigtwin?

As far as the propeller:
I have it sandblasted but the rubber drive bushing was shot (and i removed the remnants). Not sure if people press new ones in??

[Author]

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