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Reply With QuoteI thought Yamaha and Merc are interchangeable. I have a 19 4 blade you can try
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Prop Hub Question
Neighbor had a merc hub prop I wanted to test out on my boat(yamaha). My stock power tech is a 13" 19 pitch, this it a 13 3/4 15 pitch solas titan, but has mercury hub. It will fit the spline patter, but i want to make sure I have the right thrust washer and all. Little gun shy to try something on a high dollar engine and risk screwing it up. Should I just replace with a yamaha hub and get the proper thrust washer and all? That's what Im leaning towards just to make sure its all correct, but I know less than nothing about props. Some have told me its fine to run, but its not their boat and I want to do it the right way. Any input appreciated
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I thought Yamaha and Merc are interchangeable. I have a 19 4 blade you can try
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Is that a 115 in your boat???
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Yep, Im just wanting to lift the bow more, that powertech doesn't seem to like to raise the bow much, blows out with minimal trim. 4 blade may be the best way to go. Do I need a merc thrust washer? looks like the face of the merc hub is flush, but the yamaha washer is stepped on the side.
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You do know that your top speed will drop and you will increase your rpms by about 800 dropping from a 19 too a 15. How many rpms are you running now? Hole shot with a 15 would be a big increase.
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Prop Hub Question
My merc thrush washer is stepped on prop side. I have a 23 pitch I bought from EZ off his Yamaha and ran it for years on my Mercury
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You need cup on the prop to raise bow. Rake will push it downOriginally Posted by MO' MONEY
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It will run 6200 and has about 1/2 of the boat still in the water before it blows out as I trim up. I am just testing before I buy to see what changes will come about, but I'm also increasing diameter by 3/4 inch too
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That's what I thought, but it seems like every time I try to find the right prop it's a witch hunt.
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I know I have 4 blade 19 with rake you can try. I just went to a 3 blade 19 with cup and have not run it. This engine is designed to run. 6300 rpm and I am @ 5150
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