38 Lightning set-ups and speeds?
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year would be 2000,counter rotating out not in,wot speeds are 72-75 depending on water conditions.just wanting to know how much mph gain to expect if the rotation changed.
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I had a 2000 lightning with 500EFI's for five years. It is a great boat. Very predictive, fuel efficient, reliable and safe, but never ran more than 80 mph. The Imco 2" lowers really wake the boat up. I could plane over with full tanks and ten people in the boat without a problem. It turned 30" B1's 5,100 and cruised at 55mph at 3,500 or 60 at 4,000.
26" Hydro - 76mph
28" B1 - 77mph
2" Imco lower w/ 30" B1 - 80mph
26" Hydro - 76mph
28" B1 - 77mph
2" Imco lower w/ 30" B1 - 80mph
Last edited by aTX427; 09-17-2008 at 09:35 AM.
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I had a 2000 lightning with 500EFI's for five years. It is a great boat. Very predictive, fuel efficient, reliable and safe, but never ran more than 80 mph. The Imco 2" lowers really wake the boat up. I could plane over with full tanks and ten people in the boat without a problem. It turned 30" B1's 5,100 and cruised at 55mph at 3,500 or 60 at 4,000.
26" Hydro - 76mph
28" B1 - 77mph
2" Imco lower w/ 30" B1 - 80mph
26" Hydro - 76mph
28" B1 - 77mph
2" Imco lower w/ 30" B1 - 80mph
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Fresh water ~675' elevation mid 80* temps with medium humidity. These were all standard finish props. I would ditch the Hydro's their mid-range efficiency is horrible. Go with 28" B1's or 30's if you have shorties. They picked up 5mph in the mid-range over the hydro's.
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currently running 28p bravos,max rpm at wot trimmed up 5050.have you tried the 30p bravos with the standard merc b-1?
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2000 Fountain Lightning w/ 500hp's (carbs) with headers and slightly hotter cam. Standard bravos. 80-82 GPS with 3/4 fuel and 4 people in fresh water on a normal summer day. 26 hydros spinning in on the rev limiter. Considering trying some 28 bravos. Have 29 hydros, but couldn't spin them on the top end; might be able to if they were labbed. I only see 50 at cruise (3500 rpm), so if people are seeing 55 w/ bravos, I'm definitely going to try a pair.