Cavitation
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Posted on Friday Sep 2, 2011 at 10:09 PM  
I have a 350 inboard with a volvo penta outdrive. I experience what sounds and feels like the lower unit slipping while on plane at or near full throttle. Mostly as i start to trim up. Trim back down or back off the throttle a bit and it quits. Ive been hoping it was the prop but it looks the same as it always has (very minor damage. Could hardly any prop damage actually cause cavitation? Any advice helps.
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Posted on Friday Sep 2, 2011 at 10:53 PM  
Have you changed the weighting of your boat? Having something heavy in the wrong place will cause that issue
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Posted on Saturday Sep 3, 2011 at 6:57 AM  
Cavitation with loss of power and is the rpm increase rapid or do they just slowly go up. Where is the prop boggered up at on the release side or grab side of the blade and does it have any pitting
Posted on Saturday Sep 3, 2011 at 8:37 AM  
As far as weight distribution goes, i havent changed anything drastic. It does it when im by myself or with 6 customers and a tank of bait. As far as the rpms go. Its identical to when youre trying to get that last bit of speed and trim it up one bump too many. Then of course you back it down and it quits. Here are some prop pics. Maybe this could help. Thanks for your time and efforts. [IMG]
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Posted on Saturday Sep 3, 2011 at 10:49 AM  
put your boat in gear on the trailer engine off and see if your prop turns by hand if so the hub is starting to slip
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