HP on a 20ft CC

[tangofniro]

Does anyone know what the min and max hp on a 1970
cc. One more thing, at one time it was a cuddy but was changed to a cc open fisherman. Thanks for all of you help.
W. Smith

[Scott]

Tango ....Welcome

I'm not sure about the HP for that model but here is a Start

I dont think the rating would have changed all that much (info is based in 1978 )

[Endeavour]

Tango, if you're worried about maxing out HP I think you'll max out on weight before HP. I have a 150c Yam on my '71 and I can't imagine anything heavier, I tried a 130 honda 4 stroke but would have had to re-build transom or add a gil bracket. I've got about 4" of freeboard remaining at the transom which ain't much. Min HP to get up: guessing 90hp on the newer engines but that would be like molasses. I get 6-8 gph at cruise 32 mph, top around 40 mph down hill, wind from behind...

[SEAFARI]

Tango,
Dont go more than 415lbs,the Honda is way
too heavy for the 20's. The 140 Suzy or
Johnson 4 stroke is a good choice for fuel
savings. A small block V6 older carbed Yams like
the 200 Pro-V only weigh 415 lbs. The newer
Fichts to 175 are light in weight also if
you can trust them?

chris

[BJGreen]

My brother-in-law's family has a 1969 yellow seacraft that originally had an 85 evinrude on it and it allegedly ran great even with the 85- it now has a 140 evinrude on it, and man is it fast. Does 40mph+. The 140 is a good choice as it is still based on OMC's v4 block and you get the most bang for the weight, and the buck too for that matter.

[tangofniro]

Does any of the hp rating change when adding a gil bracket to the transon? I am closing in the I/O hole and will then be adding the bracket.

Thanks for everybody's help.

[tangofniro]

One more thing where is the 415lbs max coming from ?
Thanks again

[BJGreen]

The bracket moves the weight further away from the transom and unless it is a flotation bracket, i would certainly keep weight in mind, going with a lighter motor on a bracket. With a bracket, you generally pick up 5-10% more speed as the motor is back away from the boat where it gets cleaner water. I dont know of any formula for computing horsepower with a bracket.

[JohnS]

I am new to this board, very new but, I do have some insight on this. I have a 79 Master Angler running with a full platform bracket, floatation type. It has a 94 Yamaha 200 carb motor on it and works fantastic. It was even better after I installed some Bennett trim tabs. The bracket has a 26" setback. The performance is outstanding as well, cruising between 38 and 40 with a top speed of 52. I wouldn't put more than that on it, though I have seen some strange installs before. There is a guy down here in Miami that runs a 20 with a 300 Merc on it. Now that is sick...

John

[tangofniro]

JohnS,
What brand of bracket did you go with?