Outboard capacity on boat help?!?

[Tinlizzy]

I have a 14' fiberglass boat, there is no capacity plate on it. It seems to be a runabout boat. There was a 75hp on there from the recent owner that needs a bit of work to get it up and running.

I was wondering if I could fit a 100hp on the boat without over powering it? Thanks for the help!

 

[tashasdaddy]

Re: Outboard capacity on boat help?!?

Welcome to iboat. post a picture of the boat. use the go advance, then manage attachments. you can upload from computer or hosting site like photobucket.

 

[Tinlizzy]

Re: Outboard capacity on boat help?!?

Thanks for the welcome, here is the boat, it has been sitting for 10 years or so.

 

[tashasdaddy]

Re: Outboard capacity on boat help?!?

that boat was probably rated for a 50hp new, looks like it is pre 1972 design, when the tags were not required. the 75 is tops i would put on it, and you don't have to use all the hp. can tell what engine is on it. outline looks johnson/evinrude. it can run again.

 

[MWBROWN]

Re: Outboard capacity on boat help?!?

Opps, wrong post

 

[Tinlizzy]

Re: Outboard capacity on boat help?!?

The boat is a crownline, and the motor is a 1960 Evinrude 75 hp V-4. I pulled the heads off due to mice making nests in the jugs. The only problem I see is having access to the parts....

Any suggestions on where to get parts? I want to rebuild the carbs, hone the cylinders out and new rings, which means new gaskets etc. And a few other parts depending on there condition.

 

[WillyBWright]

Re: Outboard capacity on boat help?!?

An old 14 is already overpowered with a 75. A 100 would be insane!

I wouldn't overhaul that old V-4. They are gas hogs of an incredible magnitude. You'd do much better investing in a newer 50 twin with thru-prop exhaust. It'd be just as fast and use a lot less gas. They started building those in the 70s.

 

[arcadiainc]

Re: Outboard capacity on boat help?!?

Go to the USCG (US Coastguard) website. There is a section available that describes the process to determine the outboard capacity for various hull types. As posted above I would be suprised if your boat is rated for more than 50 hp. For example I have a 12 foot boat of similar design. The rated capacity for my boat is 10 hp. Hope this helps.

 

[kenmyfam]

Re: Outboard capacity on boat help?!?

100hp on that boat is insane in my opinion.

 

[CATransplant]

Re: Outboard capacity on boat help?!?

There is no way that older 14' runabout is rated at 100 hp. I suspect, from it's look that it was rated for 50 hp. With a good-running 50, it'll do around 35 mph on plane.

I grew up around boats like that one. They're tons of fun and cheap to operate, since they go fast with a smaller outboard.

Find a nice 50 hp from the 80's and have at it.

 

[deejaycee_2000]

Re: Outboard capacity on boat help?!?

I think a 100hp would be awesome on there ...... but that's just me ...