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General Jet Boat Discussions
4 stroke 60/40 on 1648 River Rhino with UHMW??
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<blockquote data-quote="rotus623" data-source="post: 427191" data-attributes="member: 15266"><p>Wow Larry, thanks. It is great to have all your time and test data as a resource.</p><p></p><p> So I pulled the impeller tonight. First thing I did was take the grates out and measure impeller clearance. Last guy who put it on had it shifted to one side and I had close to .400 clearance on one end, and .300 on the other. I took the impeller out, sanded it up to clean up the castings, and dressed the leading edges. I could NOT for the life of me find any numbers on this thing at all, but from your pics, I can surely tell it is the 2s. Plus I know it is aluminum because of the color and the filings.</p><p></p><p>I ended up straightening out my grates, chiseling one side of each of them, and moving 2 shims up and setting my impeller clearance to .015 all around. I feel like this will make a difference for sure!!</p><p></p><p>At this point I think I should give her a run and if I'm still not satisfied maybe look for an4s impeller. What did that run ya Larry?</p><p></p><p><a href="https://s803.photobucket.com/user/rotus623/media/Outboards/77C1EFA9-8549-487E-948D-835F0E0C1C59_zpstxkw72lg.jpg.html" target="_blank"><img src="https://i803.photobucket.com/albums/yy317/rotus623/Outboards/77C1EFA9-8549-487E-948D-835F0E0C1C59_zpstxkw72lg.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p></p><p><a href="https://s803.photobucket.com/user/rotus623/media/Outboards/82FA7BF0-6C70-4003-B7C3-D3422C67F9E5_zpshgj1bzlu.jpg.html" target="_blank"><img src="https://i803.photobucket.com/albums/yy317/rotus623/Outboards/82FA7BF0-6C70-4003-B7C3-D3422C67F9E5_zpshgj1bzlu.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p></blockquote><p></p>
[QUOTE="rotus623, post: 427191, member: 15266"] Wow Larry, thanks. It is great to have all your time and test data as a resource. So I pulled the impeller tonight. First thing I did was take the grates out and measure impeller clearance. Last guy who put it on had it shifted to one side and I had close to .400 clearance on one end, and .300 on the other. I took the impeller out, sanded it up to clean up the castings, and dressed the leading edges. I could NOT for the life of me find any numbers on this thing at all, but from your pics, I can surely tell it is the 2s. Plus I know it is aluminum because of the color and the filings. I ended up straightening out my grates, chiseling one side of each of them, and moving 2 shims up and setting my impeller clearance to .015 all around. I feel like this will make a difference for sure!! At this point I think I should give her a run and if I'm still not satisfied maybe look for an4s impeller. What did that run ya Larry? [url=https://s803.photobucket.com/user/rotus623/media/Outboards/77C1EFA9-8549-487E-948D-835F0E0C1C59_zpstxkw72lg.jpg.html][img]https://i803.photobucket.com/albums/yy317/rotus623/Outboards/77C1EFA9-8549-487E-948D-835F0E0C1C59_zpstxkw72lg.jpg[/img][/url] [url=https://s803.photobucket.com/user/rotus623/media/Outboards/82FA7BF0-6C70-4003-B7C3-D3422C67F9E5_zpshgj1bzlu.jpg.html][img]https://i803.photobucket.com/albums/yy317/rotus623/Outboards/82FA7BF0-6C70-4003-B7C3-D3422C67F9E5_zpshgj1bzlu.jpg[/img][/url] [/QUOTE]
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4 stroke 60/40 on 1648 River Rhino with UHMW??
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