Flywheel - over torqued or bigger engine?

[JasonAych]

I replaced a powerhead on 1 of my 53 Sea King 5hp outboards with a 51 Sea Bee 5hp power head (I know they are the same). The flywheel came off with no puller required. Turns out someone made a little copper washer to fit between the cam and flywheel. I know it is possible it was previously over torqued enlarging the tapered bore. I was also curious if it could simply be from a larger OMC engine? It has 508107 on the inside but I can't find that number on the internet anywhere. If not, is it junk? I would think so. Fortunately I have others, I just don't want to scrap it if it is a useful part to me or someone else.

 

[F_R]

Re: Flywheel - over torqued or bigger engine?

I replaced a powerhead on 1 of my 53 Sea King 5hp outboards with a 51 Sea Bee 5hp power head (I know they are the same). The flywheel came off with no puller required. Turns out someone made a little copper washer to fit between the cam and flywheel. I know it is possible it was previously over torqued enlarging the tapered bore. I was also curious if it could simply be from a larger OMC engine? It has 508107 on the inside but I can't find that number on the internet anywhere. If not, is it junk? I would think so. Fortunately I have others, I just don't want to scrap it if it is a useful part to me or someone else.

The next size larger taper is a LOT bigger. Does it fit if you take the stupid copper washer out? If so, go ahead and use it. But if not, somebody has expanded it by over torquing it. You might get away with grinding the cam a tad thinner. Othewise, it's toast.

It's a wonder it hasn't broken the cam.

 

[JasonAych]

Re: Flywheel - over torqued or bigger engine?

The next size larger taper is a LOT bigger. Does it fit if you take the stupid copper washer out? If so, go ahead and use it. But if not, somebody has expanded it by over torquing it. You might get away with grinding the cam a tad thinner. Othewise, it's toast.

It's a wonder it hasn't broken the cam.

Did that. Was still loose. Meaning I could feel it spin slightly an the crank with about 15 ft lbs. I already used another I had.