Expected top end of ‘83 60’ enclosed bridge SF with 12v92s

[oceanjake]

I know my boat has been run light it’s entire life. The old owner told me it’s an 10-11 cruiser. In a couple weeks when I’m able to run it up, assuming I can get 2350ish what should I expect to see other than a lot of fuel disappearing from the tank? 20kts? It does have fins that I realize will add drag. I’m curious more than anything to compare theoretical to my actual

[Boatsb]

I don't know of one with 1292s but the 1271 versions ran 21 to 23 kts if memory serves.

[saltshaker]

What HP and are they 12V71 or 12V92

[rsmith]

I don't know of one with 1292s but the 1271 versions ran 21 to 23 kts if memory serves.

Off a cliff maybe

[rsmith]

15 -16 kts for the 650 hp version maybe 19 for the 84-85 model years when they jacked the hp up to over 700. A few were repowered with 92’s but didn’t go a lot faster just burned more fuel. Once you get in over 5 fathoms of water the boat settles and slows down like Davey Jones is sucking you down. I’ve seen this on other boats but not as pronounced as these old 60c’s.

[oceanjake]

The engines are 12v92ti, which I cannot find literature on but I think they may be as much as 1100hp? I kind of hope not but i have seen that number associated with my boat.

[Tim Powell]

The engines are 12v92ti, which I cannot find literature on but I think they may be as much as 1100hp? I kind of hope not but i have seen that number associated with my boat.

I do not know about the hp but if thats the engine room you got a good job ahead of you KEEPING IT LOOKING THAT WAY.Must be a fresh water boat.

[SKYCHENEY]

The open bridge 1978 60C that I run with has the 12v71s @650 and runs 19-20kts at cruise in fresh water. The enclosed bridge may be slower.

[rsmith]

The open bridge 1978 60C that I run with has the 12v71s @650 and runs 19-20kts at cruise in fresh water. The enclosed bridge may be slower.

I know Melody is a pretty bare bones boat but I find that really hard to believe unless the engines have been boosted to well over 800hp. For comparison there are a load of 53c’s out there with the 650hp 12’s and they have a hard time making 20kt cruise and are way lighter than the 60c. You sure it’s KTs not MPH?

[oceanjake]

Looking for clues on how much HP I may be making...my 12v92ti’s are mated with ZF BW250 gears and 3” shafts. I guess I won’t know the speed til I try. First order of business is a cooling issue though:/.