I need advice on boat/engine size

[Kuujjuaqsealhunter]

Hi, I have an Angler 173F. It is 17`3?? by 7?5??.
http://www.misterboat.net/images/ANGLER_173F.jpg

The max gear + people weight is 1150 pounds.
The max people is 4 or 500 pounds
I presently have a very old Johnson 70hp that is 235lbs.

There is a good deal I can break on 2000 Yamaha 4stroke 115HP that is 412lbs
Problem is the recommended max is 90hp.
I am walling up the back cuz the transom height is too low for the specific conditions of the Ungava Bay. So I think the extra weight might not facilitate backwater on low or no speed.
Can the weight difference between a 90hp and 115hp truly affect safety and cargo capacity?
Are the manufacturers specs conservative? Is there leeway?
Will the extra speed affect the integrity of the boat?
Anything else I should know?

Most people in the Arctic have freighter canoes or aluminum boats so I have very little input on the subject.

Please help

 

[QC]

Re: I need advice on boat/engine size

You control power with your right hand, but it is the weight balance that might make this very unstable, unsafe and possibly unusable. Have a 250 pound friend stand on the transom with your original OB there and you'll see why this is a bad idea. Remember the extra weight is even further aft so that's why I said 250 at the transom.

 

[shrew]

Re: I need advice on boat/engine size

Does it give an engine weight limit recommendation? The weight and HP limits are an AND, not an OR value. I see a lot of people ignore the HP if the weight is within specs. This is not recommended. If the max. is 90HP, then I would stick to at or below the HP rating. That is a big jump in weight and exceeding HP on top of it is asking for trouble.

 

[Biged007]

Re: I need advice on boat/engine size

It's my bet that the stated HP rating was written to a 2 cycle outboard of the same age. as far as the HP difference not the problem you are facing example the Merc 90 and 115 are physically the same such as a 305 chevy vs a 350 it's the 2vs.4 cyl. and the physical weight the is the issue I''l bet you could go up to say a 140 Johnson before coming close to that 115 Yamaha. I'm in puter mood so lets see what can find out about the max transom weight.

 

[Kuujjuaqsealhunter]

Re: I need advice on boat/engine size

Thanx for the infos, I'm thinkin Evinrude E-tech 90 cuz, Low maintenance (essential far North), good on gas, small and lighter (320lbs).

Found a 2006 model with only 20hours with basic controls for 7000$ canadian, crated. Is that good?

 

[Bob_VT]

Re: I need advice on boat/engine size

Welcome to iboats. The e-tec 90 is a great motor and would fit your needs nicely.

Have you looked at the outboards available here on iboats? http://www.boatmotors.com/rebuilt_outboard_motors/

Did you know that a newer 75 hp such as the mercury optimax that is on iboats is equal to an old (pre 1984 90hp Johnson or evinrude)....... a newer 75 hp will be a substantial kick in the transom and a newer 90 hp will get you flying.

If your reason for an upgrade is to upgrade your fishing boat then a 75 will work nice...... if the majority of it's use was as a tow boat for water sports then I would go larger to the 90. The 75 will get better MPG vs the 90 too.

I realize you are not brand specific however, I would choose a brand that has a support network near you.

 

[Biged007]

Re: I need advice on boat/engine size

Is this a Test only kidding Seriously I just find it funny that when you Google your boat This site meaning iboats is the first dealer listed.

here's a couple of notes Yam 115 = 414 lbs. Yam 90= 369 lbs. the Evenrude E tech 90 = 320 lbs.
I will offer on a particular brand but HP vs. weight remains a constant