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 2000 310 Sea Ray with inboards Performance Issue

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T O P I C    R E V I E W
awallach Posted - Mar 10 2014 : 18:51:33
I have a 2000 310 Sea Ray with inboards that are using 16x15's props. I see the Sea Ray website / manual suggests 16x15's or 16x17's. I brought the boat new in 2000, however, the boat was out of my hands for 5+ years. Therefore, I dont know if the boat still is using the original props, but when I got the boat back last year the performance has been horrible. I used to run at 3600 RPM and get 22GPH at 21kts.
Now I run at 3600RPM and im burning 36GPH and running 16kts. The engines have been tuned. The props have been tuned.
I'm puzzled as to what to ask the shop to do for me during commissioning.
Does any have the same boat to talk prop's and performance?
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dancerscap Posted - Mar 11 2014 : 01:50:08
If you checked the size/pitch I trust you have bottom access. Condition of bottom is crucial. A fouled bottom will destroy performance more than you'd think. I've been unable to plane 'til I went under and cleaned for 30 minutes or so. That said going to a higher pitch no. should reduce rpm's not the other way, so I'd check the bottom first especially since you're still turning the same rpm's.

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