Inboard/outboard change to outboard

[ralph]

Has anybody replaced an inboard/outboard with a large (150hp & up) outboard using a bolt on bracket? Any advice needed.

 

[Capn Mike]

Re: Inboard/outboard change to outboard

See the discussion & pictures below. As long as the transom is in good condition (check for any rot), you should have a boat that performs better than ever!http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic&f=1&t=001148

 

[495v]

Re: Inboard/outboard change to outboard

Hey, what are you saying that i/o's suck? My Ranger's equipped with an i/o in it and will eat up almost anything on the water, ALMOST anything.

 

[letsbarbq]

Re: Inboard/outboard change to outboard

hey 495v -- more power to you <br /><br />he is talking about a significant change in performance from a boat with an I/O swapping over to a equal hp rating outboard. He isnt talkng about I/O vs. outboard.<br /><br />and he isnt saying it, but i am. I/O sucks!

 

[495v]

Re: Inboard/outboard change to outboard

And that's your opinoin there Mr. B-b-q. Forget about the pissing contest between which is better,.....what kind of significant changes in performance would one reap from an outboard over an I/O?

 

[letsbarbq]

Re: Inboard/outboard change to outboard

Yes, and that is your opinion mr. 495v.<br /><br />True that, forget about the pissing contest between which is better. <br /><br />Why don't you tell me why you think that there isn't any kind of significant changes in performance one would reap from an outboard over an I/O?

 

[G DANE]

Re: Inboard/outboard change to outboard

Gents calm down.<br /><br />I had both I/O and Outboard. Both have their advantages. For one or other reason same HP gives less with I/O installation - raw power from the outboard. However I/O gives smooth quiet operation and better fuel economy. Some likes the mother and some likes the daughter - thats the way it is !!

 

[495v]

Re: Inboard/outboard change to outboard

I don't know, that's why I'm asking. By performance, do you mean more speed or better handling, or what? As far as speed, I think the new Merc Scorpion will push a boat just as fast as any outboard hangin on it. From what I hear, it is much easier and cheaper to supe-up and outboard than an i/o in terms of horsepower, but I'm by no means an expert, just an avid fisherman.

 

[G DANE]

Re: Inboard/outboard change to outboard

My opinion and experience is:<br /><br />If you compare same boat with i exa. 125 HP outboard, any brand, to 125HP I/O, the outboard will give you:<br /><br />Higher topspeed, better holeshot, more noise, vibrations and fuel consumption. <br /><br />I know outboards are more quiet and economic now, but the difference is still there.<br /><br />It all depends on what you want and use your boat for.

 

[Capn Mike]

Re: Inboard/outboard change to outboard

Didn't mean to start an argument, but I just assume that everyone fishes. Yes, the I/O is quieter, but it's much heavier/HP. And annual maintenance is generally more costly. OB? change plugs & lower unit grease: done. OB? Big motors generally require a 2nd trolling motor, while I/O can usually get away with a prop baffle (I/Os can idle away all day, while my OB clogs up in an hour). Carb OBs seem to go on forever with little maintenance, while I/Os, seem to have more "issues." <br />But the main reason I prefer OB is that all things being equal, an OB has lots more room in the cockpit....which we then fill up with icechests, chairs, tackle boxes, bait boxes, anchor lines, etc.....!!<br />Hey, if you're fishing it doesn't matter what you're driving...

 

[DJ]

Re: Inboard/outboard change to outboard

HP for HP, I/O's have a weight disadvantage. The extra weight also effects shallow water (draft)operation in some boats. <br /><br />Also, the OB is happier running at a higher tilt angle in shallow water than an I/O. The I/O has u-joints to contend with.<br /><br />Let's all remember that I/O's were invented when OB horsepower was topped out at about 80.<br /><br />No arguments from me either way. They're just different animals.<br /><br />Swapping I/O HP for OB HP on a bracket. I would expect a significant performance boost from the OB.

 

[letsbarbq]

Re: Inboard/outboard change to outboard

Gents very good postings. Including 495v. I didnt want to sound like I was screaming or starting a argument. I just repeated what 495v had typed down. In order to see if he got the same impression as I got from his first postng.<br /><br />My advice. This forum is a opinionated web site. Please just let things roll. Dont use suck in a descriptive way. Leave it to your significant other. (not directed to anyone.) If it runs than great keep it. <br /><br />"dont worry, be happy" i'm going fishin now offshore on a buddy's WA with a new 4-stroke yammie 200. I'll tell ya how it went <br /><br /> later alligators!

 

[495v]

Re: Inboard/outboard change to outboard

I agree with b-b-q, good postings. I apoligize about the sarcastic remark I made at the beginning, no point intended. Really just trying to stir up a little friendly debate, and I guess I did come on a bit rude. <br />This is my first i/o and was wondering the pros and cons compared to OB. Thanks for the input from everybody.

 

[letsbarbq]

Re: Inboard/outboard change to outboard

495v - dont worry, be happy. no need to apologize.<br /><br /> I have a OB on my boat and a buddy has a v6 I/O with same horse power rating. - I go faster. just a little.-- but who really cares. I know the fish doesn't. And but he gets better distance than me. Since my outboard is a 2 cycle and about 15 yrs old and needs decarbing - She drinks gas like a thirsty Taliban sitting in the mountains waiting for the Americans to leave.<br /><br />Oh yeah, boy...... those 4 strokes are fine. reading articles is nothing compared to actually spending a fishin day with one all alone 40 miles offshore and not worrying about the gas gauge.<br /><br />4 stroke is the wave of the future.! u gotta have them.

 

[Dhadley]

Re: Inboard/outboard change to outboard

Neat subject. I've been involved with the same model boat with both for power. As stated, there are advantages to both. One of the advantages of the outboard is obviously the ability to quickly change the X dimension. <br /><br />We did a conversion on a 32 Excalibur a few years back that turned out pretty neat. It had a pair of 330's in it and ran 53 mph. We installed bracket and 3 275 hp V8's. (I know it isn't comparing equal horsepower.) With a lot of tweaking and fine tuning we got ot to run 70. And it burned less fuel, especially at cruise (40 to 50 mph). It was a neat project and a lot of fun.<br /><br />Good luck!

 

[letsbarbq]

Re: Inboard/outboard change to outboard

that must be a rush doing 70 on the sea - I must admit when i was in Ft. Lauderdale last year - you guys sure had fine boats n yachts.

 

[Hawkeye1]

Re: Inboard/outboard change to outboard

One big advantage to a OB over the 4 stroke is you can run a OB at 90% throttle for a hour if you need to. I wouldn't have the guts to run a 4 stroke that hard that long. I have run 50 miles at 4800 rpms for 1.5 hrs b4 and the OB never missed a lick.