Engine too big?

[bunnykins]

Does anyone know if a 2001 130HP 4 stroke engine is too big/heavy for a 20 foot capri?

 

[whywhyzed]

Re: Engine too big?

2001HP ?? - that's WAY too big for a 20 foot boat

 

[peacekeeper6]

Re: Engine too big?

i know the bayliners that are 19' used to come with 125s so you should be fine.

 

[j442w30]

Re: Engine too big?

What is the boat rated for? Check the capacity plate just to be sure. Many of those boats did come with 125 Forces so the 130 four stroke will be a little bit heavier so make sure your transom is in good shape.

 

[SandMan*]

Re: Engine too big?

I dont mean to hi-jack the thread but I'd hate to make a new one for the same topic.

I bought a 12.5 Hourston Glascraft F/G boat with a 45hp Classic Fifty Merc, am I over powered?

I've had it out on the lake once, and because I was an idiot and failed to research some things before I went out I had the engine on max tilt which pushed the back down and the bow up!

SO I was not riding properly unless I crammed all 4 people to the front of the boat and moved the tank forward

But I think it should be fine now that I've lowered the motor...

 

[peacekeeper6]

Re: Engine too big?

does your boat have a max HP plate? 45 is kinda big for a 12 footer...IMHO

 

[SandMan*]

Re: Engine too big?

No, unfortunately it does not have the HP rating plate, but I know there is a formula to figure out what my HP should be... I dont know that formula though.


I guess if I just keep the speed and revs down I should be alright, I dont take it out in the ocean or scary water either.

 

[dajohnson53]

Re: Engine too big?

The formula is available on the US Coast Guard web site. It has to do with length, beam, transom height, maybe something else.

For what it's worth, the formula came out exact for my boat. I don't know if it's because the builder used the formula or not. Some say the formula returns a higher or lower max than what their boat is actually rated for. The actual rating, on the plate, on the boat, is the one you should go by if it exists.

I used to have a 9.8 merc on my old 12 foot lund aluminum boat in the 60s. It was rated for 7.5 and we thought we had a hotrod!

 

[SandMan*]

Re: Engine too big?

I'll look for the formula, but I dont think I'll downsize in power... That will just lead to disappointment!

I would never use this much power on an open boat such as an aluminum, but because my boat is quite stable I think I should be fine.

On my old 12.5 Glascraft (the exact same as the one I have now) we had a 20hp evinrude and took that thing into some seriousely ugly ocean weather and nothing could sink it.

With the 45 it definately has some get-up and go! Over winter I'm going to re-do a lot of things on the boat, mainly electrical and seating and relocating the fuel tank if necessary...

Time to research some things about replacing the deck!