Outboard Selection

[1994lundminnow]

I have a 1950 Crestliner 14 ft Aluminum boat. My 1955 18HP breathed its last not long ago so I'm looking for a replacement. Would a 25HP 4 stroke be too much engine for this boat?<br /><br />thanks.

 

[Terry H]

Re: Outboard Selection

You should be fine with that...maybe someone will chime in with the USCG site that has the formula to figure it out...just a thought

 

[1994lundminnow]

Re: Outboard Selection

that'd be helpful. Its a 54 year old boat, I don't want it falling to bits on me out there.

 

[phatmanmike]

Re: Outboard Selection

uscg method is as follows:<br />lentgh X 2 plus width -90 = max hp.<br /><br />will not work on very small boats such as small johns.....<br />example <br />17 feet boat with 6 foot width<br />17X2=34x6=204-90=114hp<br /><br />id say thats too big a motor. maybe a 2 stroke 20hp , but not a 25hp 4 stroke

 

[green4themoney]

Re: Outboard Selection

1994lundminnow,<br /><br />you have to be careful, a 25hp 4 stroke engine is heavier than a 25hp 2 stroke, so if you are going to put on the maximum hp that the boat requires, if you are going 4 stroke, you should downize the engine from 5-10 horspower for maximum performance..........hope this helps

 

[green4themoney]

Re: Outboard Selection

downize=downsize

 

[Forktail]

Re: Outboard Selection

I have a 90's year 16' Crestliner with a 2002 4-stroke 15 on it. It goes very well. I would guess a 15 hp 4-stroke is all you need on that 14'er.

 

[walleyehed]

Re: Outboard Selection

I agree with Forktail...15hp would (should) be plenty. Your old 18 most likely never got a true 18 anyway, even when new.<br />I bought an 8hp yammy last fall for a kicker on my 18ft'r and mounted it on a 12 ft alum. deep-v to move some fish feeders on a small lake and when we were done, I opened it up just to see what it would perform like and man, that 8 will make that boat fly with 2 guys in it, I was impressed.

 

[1994lundminnow]

Re: Outboard Selection

phatmanmikes formula:<br /><br />14ft*2 = 28<br /><br />28 * width of 5ft = 140 - 90 = 50HP... I know that is WAY too much motor.<br /><br />Thanks for everyones help. I kinda figured that 25HP would be a bit much. The 18HP seemed to be enough before.<br /><br />Thanks.