Oversized motor on an aluminum boat

[dtsman]

Hey guys,

I am going to continue working on that vintage 54 seahorse I got all that direction on.
But I found a good deal on an outboard on the local craigslist. It is a 50hp Evinrude sizzler for $500. The motor seems kind of large for my boat and I know I will have to reinforce the transom. But this may be just to big.
Here are pictures of my 14' vhull jon boat and a picture of the motor on another boat. I did not post the craigslist picture, because I found a pic of it on another boat so the size could be understood. My boat is 14' long 48" wide at the water line and 56" wide acorss the top. I have a center/side console for it that mounts to the front bench seat.

Is this just to much motor, or for the price, is it worth having someone weld aluminum reinforcement to the transom and using?? All the new bass boats have motors that look like the are 4 times to big for them. Why not mine?

craigslist posting:
http://houston.craigslist.org/boa/3017767756.html

Thanks,
Bo

 

[Boss Hawg]

Re: Oversized motor on an aluminum boat

My 1st thought is just say NO to your question----
BUT I have a 110 Johnson on my 20' pontoon

Seriously IMHO thats just too much motor---

 

[oldcatamount]

Re: Oversized motor on an aluminum boat

I agree with Boss, it's way to big. Your boat is probably rated at 25hp or so. Even with reinforcement, it'll be very dangerous.

 

[sasada]

Re: Oversized motor on an aluminum boat

Yes....too much motor. My 16' lund with wider gunnels and a strong factory transom is only related for 50hp. I'm pretty sure the beam on my rig is 72". And with that being said most boats like mine without the wider gunnels are rated for 40hp. I'm pretty confident in saying that 25hp is about all that boat should handle. Best regards

 

[metriccrescentwrench]

Re: Oversized motor on an aluminum boat

If you decide to go for it, can you first take out a large life insurance policy and name me as beneficiary?

Hey, I like fast boats. But da&% dude :facepalm:, you're talking like double the power that boat's rated for.

 

[dtsman]

Re: Oversized motor on an aluminum boat

Thanks guys,

I figured as much, but thought I would check the feedback from those more knowledgable.

Shopping for something under $500 and this looked like a good deal. I want something larger than a 9.9. I would like to stay around 20 or 25 but not alot of options as of yet. I am scared my 1954 25hp will become a money pit if I decide to tear it apart and rebuild.

Boss, I am in Houston. Any good motors laying out there in east Texas. I have family all over from Lufkin to Toledo Bend and back down to Orange. This boat, once running, will be heading for Toledo Bend. We have a family camp right near the lake.

Bo

 

[jbjennings]

Re: Oversized motor on an aluminum boat

I just wanted to mention that you're going to find that 25 you have is probably going to be MORE than that boat can handle. It will get extremely difficult to handle at WOT, and in a cross wind, will really be squirrelly. NOt that I wouldn't put the 25 on it, but you'll probably need some transom reinforcement with just the 25. Those old 25's have a whole lot of low end torque.
Last of all, I own a 25 like yours and it is a lot of fun to pull start it. I find that choking it once, pulling it through, and pushing the choke back in and cranking it works best. Those old 25's seem to suck a LOT of fuel in with the choke on, and flood easily if you pull it more than once on full choke.
Later,
JBJ

 

[dtsman]

Re: Oversized motor on an aluminum boat

Thanks JBJ,

Yes it does flood easily. It floods when I prime the bulb. The gas just runs out of it. It just has to low of compression to keep it running. It is at 30psi exactly on both cylinders. See my other "no spark" thread from a few days ago.

Bo

 

[jbjennings]

Re: Oversized motor on an aluminum boat

If it floods when you prime it, it is because the float needle has some grit under it and it's not shutting the fuel off. I don't know why a lot of folks are getting 30psi on both cylinders lately, but it just doesn't happen very often. That motor should be hard to pull through with spark plugs in. If it's not that hard to pull, you probably have bad compression. However, your motor will never even attempt to start if it only has 30psi. of compression. If it does attempt to start and run only for a few seconds, it's not compression that is the problem, it's something else.
Good luck,
JBJ

 

[1946Zephyr]

Re: Oversized motor on an aluminum boat

That's a very nice old 25. I would definately fix it up and make it run right. It's a classic. I think the best motor for your Gamefisher, is around a 15hp Fastwin/FD model. A 10hp would work fine too.

That is a nice 50hp Sizzler. It looks to be early 70's and later. For that motor, a 15 - 16' fiberglass boat would be more appropriate.