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Thread: engine question IO v OB

  1. #1
    Senior Member Finished Business's Avatar
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    engine question IO v OB

    was just curious, since I don't have lot of onwater experience with inboard motors...in a nutshell...

    If a boat had a dry weight of 3000lbs (for arguement sake) and it was powered by a 200hp outboard. Would that same boat with the same dry weight, powered with a 200hp inboard, perform the same? When considering speed, acceleration, and manuverability?? Sterndrive inboard of course...

    shine some light?

    -Tx, FB
    Quote Originally Posted by Sculpin View Post
    Apparently FB is not as hardcore as I thought

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    Senior Member Sculpin's Avatar
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    Outboards are more fuel efficient (we are not including diesels here ha ha), weigh less for hp, and you don't have a big azz hole in your boat below water line. Less weight the hull would perform better. You can adust your prop height with an out board as well to fine tune things.
    Last edited by Sculpin; 04-22-2012 at 10:11 PM.
    Originally Posted by Fishtofino

    "If you're trying to go for tuna on the cheap you are just asking for trouble. The ocean is a mean bitch that wants to kill you. My 2 cents worth."

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    Senior Member Finished Business's Avatar
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    I know you want me to pod it John haha but, although those are all great points to support the swap, performance wise does 200hp in an OB perform the same, if the boat was identical in wieght with each engine, as an IO? Not including gas mileage (althought thats a big one!!), but just top speed, acceleration, and turning?

    and considering diesels, is the same amount of diesel horsepower, in this example, 200hp, needed to perform the same as a 200hp gas engine?
    Last edited by Finished Business; 04-22-2012 at 10:26 PM.
    Quote Originally Posted by Sculpin View Post
    Apparently FB is not as hardcore as I thought

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    Senior Member wildthing's Avatar
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    cost of purchase new out board = 15+ k
    new V6 or V8 = 5k or less depending if your leg is still good ????

    but most boat mech's just like working on OB for some strange reason

    think it has to do with not getting there gut over the rail x amount a times a day

    it may keep them fit......lol
    forced to work live to fish
    flying a union jack high and mighty .....lol
    88A----- john boy

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    There is no comparison. Outboards are lighter, quieter, more fuel efficient, require less maintenance and replacement of add on parts, give you more room in the deck area of the boat, are easier for mechanics to work on and much safer when it comes to gas and explosive fumes. Hole shot and top end speed will be better with outboards. Operating in shallow waters is better with outboards. I/O's are better at lugging around more weight with less engine wear as they swing a bigger prop and the rotating assembly is much beefier. I/O's are better at slow speed maneuverability and have better response to throttle in reverse. So they are easier to dock. A 200 hp I/O diesel will get better fuel economy but will not have the same top end speed as the gas. You will cruise at a slower speed as well.

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    Senior Member TelStar26's Avatar
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    I could be way out to lunch here, But I was under the impression that outboards out perform Inboards for all the above listed reasons, But! When the outboard does go, its usually a big BANG! and your *^cked! kinda like a 2 stroke dirtbike or jetski. Very low maintance and good power for the weight, but its not if they go, its when they go, and they go boom!
    Again, I may be in correct. This probly applies to the older 2 stroke outboards.

    Edit: sorry, just realized this has nothing to to with the OP's question about speed and such....

  7. #7
    Senior Member Finished Business's Avatar
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    Quote Originally Posted by profisher View Post
    There is no comparison. Outboards are lighter, quieter, more fuel efficient, require less maintenance and replacement of add on parts, give you more room in the deck area of the boat, are easier for mechanics to work on and much safer when it comes to gas and explosive fumes. Hole shot and top end speed will be better with outboards. Operating in shallow waters is better with outboards. I/O's are better at lugging around more weight with less engine wear as they swing a bigger prop and the rotating assembly is much beefier. I/O's are better at slow speed maneuverability and have better response to throttle in reverse. So they are easier to dock. A 200 hp I/O diesel will get better fuel economy but will not have the same top end speed as the gas. You will cruise at a slower speed as well.
    Nailed it Pro, thanks very much!

    So how much is a pod typically worth? I know Armstrong is the big name, but other builders locally do them as well. All of these points add up to a bottom line somewhere, just want to know all of my options and the end result of each

    FB
    Last edited by Finished Business; 04-23-2012 at 09:42 AM.
    Quote Originally Posted by Sculpin View Post
    Apparently FB is not as hardcore as I thought

  8. #8
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    Prices on a pod will depend on factors like...buying it off a shelf or having one made. Style of pod..ie, with a swim grid or without. I had mine built years ago by Bohn sheet metal in Sooke. I took measurements of s "Gill" bracket at a Seattle boat show and had them build me a copy. Much cheaper..I think at the time it was half the price. Then I took it to Victoria Powdercoating and when it was ready I had Bohn's install it on the transom. I know a few guys who more recently have used Liquid Metal in Sidney to have pods built. I would start there and compare what they can do compared to pods off the shelf. My preference is to have a pod custom built to fit your boat if the price is the same or better.

  9. #9
    Senior Member Finished Business's Avatar
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    sooo in the ballpark of 1k? 5K? My guess is around $2000ish? I don't want to call a shop as this is all preliminary research and I hate calling a place just to satisfy my curiosity, until I am ready to actually start the build, I would feel like I am wasting someones time...

    on the other hand, I'm happy to 'waste' your guys time on here lol.

    just trying to feel podding out, as everyone pushes for it pretty hard! I could use all that space for a few hundred pounds of tuna forrrr sure!
    Quote Originally Posted by Sculpin View Post
    Apparently FB is not as hardcore as I thought

  10. #10
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    I would guess between $1,500 and $2,000 would be a good place to start. Back in 1992 mine came in under $1,000.

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