Whats up with this prop's fit? Seem right?

[Mark42]

This is the prop I'm running now. The only marking on it is "1:9 C" stamped on the side between the blades. It fits very well, probably only an 1/8" gap between the prop and the gear case.

http://img.photobucket.com/albums/v437/mark42/85 Bayliner 1600 Cuddy Cabin/HPIM6769.jpg

The boat came with a spare prop. The box is from US Marine, and has part number P686-1 and 13x19 dia/pitch on the box. The prop has "A625265" and "PS625" cast into it.

The new prop doesn't fit like the other prop. Note how the edge of the prop does not fit inside the gear case like the other prop does. It's sticking out about 1/2" with or without the thrust washer on the prop shaft.

http://img.photobucket.com/albums/v437/mark42/85 Bayliner 1600 Cuddy Cabin/HPIM6771.jpg

Its the right spline count, but from this angle, it looks like its not sliding far enough onto the prop shaft. Some of the spline needs to be exposed to fit the flare end that came with it.

http://img.photobucket.com/albums/v437/mark42/85 Bayliner 1600 Cuddy Cabin/HPIM6772.jpg

The old prop has the flared end as part of the prop, not a separate piece.

http://img.photobucket.com/albums/v437/mark42/85 Bayliner 1600 Cuddy Cabin/HPIM6775.jpg

A view of the thrust washer/gear case end of the props. They look to be the same.

http://img.photobucket.com/albums/v437/mark42/85 Bayliner 1600 Cuddy Cabin/HPIM6776.jpg

And here is the view with the flare in place.

http://img.photobucket.com/albums/v437/mark42/85 Bayliner 1600 Cuddy Cabin/HPIM6778.jpg

So whats the story? Is this the wrong prop? Or am I not installing it right? Can anyone tell me what those numbers off the prop translate to?

Thanks!

Mark

 

[Mark42]

Re: Whats up with this prop's fit? Seem right?

Ok! Figured it out. Apparently the splines at the end of the prop got mashed a tad, preventing the prop from sliding all the way on. A quick touch up with a small file, and the prop slipped right on.

Even though I looked down the splines a dozen or two times, and everything LOOKED right, when I tried to put the prop on backwards it proved the splines were ever so little out of true at that end. Bet the prior owner didn't realize what was wrong with it either. I can see rub marks from a washer on the prop, so someone tried to install it. Guess it could have been damaged in production.

 

[jerryjerry05]

Re: Whats up with this prop's fit? Seem right?

The blue prop came off a 87 and up.The other is for the older motors75thru 140.Michigan Wheel Marine.The #'s are Michigan Prop#s.J

 

[Mark42]

Re: Whats up with this prop's fit? Seem right?

The blue prop came off a 87 and up.The other is for the older motors75thru 140.Michigan Wheel Marine.The #'s are Michigan Prop#s.J

Jerry, thanks for the response! I do appreciate the information. But I'm not sure which prop is which from your description. Both props are black, one is new and one is used.

Can you point out which is the Michigan Wheel prop in this pic?

Thanks!

Mark