47 Fountain Top Speed with trip 500efi?? and GPH? Anybody?
04-24-2012, 08:26 AM
#21
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I have my "performance report" from the Fountain Factory for my 2000 47' Lightning with triple 500efi's with 27p props
rpm 3000 44mph drives 2 tabs 2
rpm 3700 60 mph drives 3 tabs 1
rpm 4000 64 mph drives 3 tabs 2
rpm 5350 85 mph drives 4 tabs up
GPS 85mph/Speedo 90mph
72 degrees and 10 mph choppy
rpm 3000 44mph drives 2 tabs 2
rpm 3700 60 mph drives 3 tabs 1
rpm 4000 64 mph drives 3 tabs 2
rpm 5350 85 mph drives 4 tabs up
GPS 85mph/Speedo 90mph
72 degrees and 10 mph choppy
Last edited by dewayne6243; 04-25-2012 at 02:16 PM.
04-30-2012, 02:34 PM
#22
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I just picked up a 47 Lightning and I'm having a hard time getting it over 80 mph. Trip 500's with 28P bravo props. I've ran it full of gas, light on gas, boat runs the same. I'm turning it 5200 rpm's. Ive been hesitant to turn it higher. Any suggestions?
05-11-2012, 04:23 PM
#24
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What year? My 2002 that we sold in August with 500 EFI's ran 86 GPS didn't need to trim it past 5 to get there.
05-12-2012, 09:56 PM
#25
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New driver?
05-13-2012, 12:21 PM
#26
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86....hmmmm. Same props? I'm running with a good amount of fuel. If I run lighter on fuel maybe 2 mph's more but I can't imagine 5 more. The more I use the boat I'm convinced it's a solid 80-81 mph boat, that's it. I guess if I get the rev limiter raised I could rev them higher but I was told the boat ran mid 80's. BS
