35' Lightning w/ 2 x 900HP
#44
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Join Date: Dec 2006
Location: Woodstock, GA
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I will have some good numbers by this weekend. One of the drives broke putting it into gear. We got to aprox 107 MPH @ 5000 RPM and it had me pinned in the seat! I didnt get to top it out. Im spinning the motors to 5800 so hopefully I get to strech it out in a few days!
#48
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Location: Woodstock, GA
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I got to run my boat all day without problems! Well,somewhat. I didnt break down! I got up to 115 MPH @ 5500 RPM and my fuel pressure was dropping so I backed out. I replaced my mechanical fuel pumps with new 172 GPH pumps and running around all day was fine except when I tried to top it out. I made several 110 MPH passes but when I stayed in it to find out how fast it was going to go my fuel pressure dropped to around 4 PSI @ 5500 RPM so I backed out. I have 1/2" fuel lines and 172GPH mechanical pumps, what should I do from here? I'm assuming the higher the RPM @ WOT the more fuel its requiring and I am coming up short?
#50
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Location: Georgia
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I got to run my boat all day without problems! Well,somewhat. I didnt break down! I got up to 115 MPH @ 5500 RPM and my fuel pressure was dropping so I backed out. I replaced my mechanical fuel pumps with new 172 GPH pumps and running around all day was fine except when I tried to top it out. I made several 110 MPH passes but when I stayed in it to find out how fast it was going to go my fuel pressure dropped to around 4 PSI @ 5500 RPM so I backed out. I have 1/2" fuel lines and 172GPH mechanical pumps, what should I do from here? I'm assuming the higher the RPM @ WOT the more fuel its requiring and I am coming up short?
Had a great time this weekend with you all. Your boat ran and looked GREAT....congratulations.!!!! I would suggest electric fuel pumps for that size engine.
How is the new truck?!?!
Jonathan