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Full Power with Seats Next to Engine

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  • Full Power with Seats Next to Engine

    What are the thoughts on how dangerous that is? I know the gas fumes thing is a big deal, but what about stressing an engine with people sitting effectively right next to an assembly of metal parts turning at 4,000RPMs+?

    I do it for short stretches, but I'm not too happy about that arrangement. Do they even still make boats with seats either side of the power plant, or is that a thing of the past? Mine's got ashtrays on top of the engine cover too, lol; which I've also seen in older light aircraft, btw (and smelled raw fuel in flight before - not a comfortable place to be).

    Just wondering if anyone else thinks this situation is less than ideal, and actively avoids it.
    1988 Renken 2000 Classic/1986 drive; 4.3L, OMC Cobra - 1st boat
    Pulled with: 1997 1/2-ton Suburban, 2WD; 5.7L Vortec, 3.73:1 limited slip rear axle
    Located: Central U.S.

  • #2
    Click image for larger version  Name:	 Views:	1 Size:	448.9 KB ID:	10893850




    I've thought the same, I prefer the way my boat is set up with the storage areas on each side of the engine and the big sun pad and the bench seat in front of that, it works better in a boat 20' or longer, perhaps you could redo the engine hatch with steel panels inside, sounds like overkill but a bigger risk is not the engine blowing and scattering parts but fuel vapors. I think any inboard gas engine should have a gas vapor fume detector, I put one in about 7 years ago, its an easy install and simple to wire up.
    Attached Files
    1988 Four Winns 200 Horizon
    4.3 OMC Cobra

    98 Jeep Grand Cherokee 4.0 Selectrac
    07 Jeep Grand Cherokee Limited 5.7 Quadradrive II

    "While air doesn't freeze....rust never sleeps"

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    • #3
      How often do the parts leave the block ?


      a few hundred thousand boats built that way, or with seat on top of, or in front of, or behind the engine
      Medford, WI


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      • #4
        The term blow up meaning terminal engine failure isn't an explosion. Not deadly unless it's funny car.
        BOAT SPECS | FORUM HELP | STARCRAFT FORUM | SHOP iBoats
        Please, no PM's (Private Messages) regarding boat/engine problems.
        That is what the forums are for.
        Only forum/moderator issues will be answered in PM's.

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        • #5
          I would be more worried about a lightening strike.
          ....

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          • #6
            Yeah probably more applicable to a racing motor that's really being pushed for horsepower, not a <200hp stock setup.

            I've got room to do a bench like that. That'd add at least one extra seat too...
            1988 Renken 2000 Classic/1986 drive; 4.3L, OMC Cobra - 1st boat
            Pulled with: 1997 1/2-ton Suburban, 2WD; 5.7L Vortec, 3.73:1 limited slip rear axle
            Located: Central U.S.

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            • #7
              People will walk / climb into an airliner with 2 engines and go up to 33,000 feet and across an ocean.------That used to demand 4 engines.------No I do not do that and If I did it would be a 747 I think.------Sitting beside an engine at 4000 revs is not a risk in my opinion.

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              • #8
                4000 RPM is kind of low for WOT

                I have sat on top of 750hp diesels screaming at 3000 RPM as well as sat in a bilge working on twin BBCs screaming at 5300 RPMs, and been in the engine room on a 9000 hp yacht doing 65 knots.

                You are worried about nothing

                Sitting next to a stock boat motor in a jump seat has only been done by about 40 million boats.....and still continues today
                Cheesehead boating the Gulf Coast of FLA 27.51° N, 82.53° W

                1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - https://forums.iboats.com/forum/owner...988-rogue-2420

                Past Boats
                1970 Wooster Hellion - Merc 9.8
                2002 SeaRay 190BR - 5.0 - A1G2 - "Cheeseheads in Paradise"
                1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

                What’s behind you doesn’t matter.Enzo Ferrari

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                • #9
                  Yeah, come to think of it, I rode bikes for 20 years before I got the boat, and you're fairly straddling the motor and as close to the gas tank as you can get. And flogging them for all they're worth sometimes, just not at a continuous high rpm. You get used to it and never think about it.

                  I guess it's different when it's your kids back there, and not you.

                  Yeah, my 4k-ish is low; I've never seen above 4,300 or so. The prop is a bit flawed, and I doubt it's tuned 100% correctly.
                  1988 Renken 2000 Classic/1986 drive; 4.3L, OMC Cobra - 1st boat
                  Pulled with: 1997 1/2-ton Suburban, 2WD; 5.7L Vortec, 3.73:1 limited slip rear axle
                  Located: Central U.S.

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                  • #10
                    zero concern...

                    Next time you fly and you are sitting right in front of the wing, take a look out the window. That jet engine is equipped with a bunch of titanium knives spinning up to 25,000 rpm. (and yes, they can and have departed engines before) Kind of makes a little v8 small block insignificant by comparison.

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                    • #11
                      Originally posted by H20Rat View Post
                      zero concern...

                      Next time you fly and you are sitting right in front of the wing, take a look out the window. That jet engine is equipped with a bunch of titanium knives spinning up to 25,000 rpm. (and yes, they can and have departed engines before) Kind of makes a little v8 small block insignificant by comparison.
                      That may be one of the things that got me thinking about it. Yeah, that's happened a number of times. The SWA flight is the most recent I can think of, where lady got partially sucked out of the window after the fuselage was breached. The DC-10 at Sioux City, IA in 1989(?) where lines from all 3 hydraulic systems got severed in the back is probably the most well known one.

                      That and the old "throwing a rod" phrase, and cars blowing up and leaving parts on the dragstrip and so forth.
                      1988 Renken 2000 Classic/1986 drive; 4.3L, OMC Cobra - 1st boat
                      Pulled with: 1997 1/2-ton Suburban, 2WD; 5.7L Vortec, 3.73:1 limited slip rear axle
                      Located: Central U.S.

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                      • #12
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                        Originally posted by PITBoat View Post
                        That and the old "throwing a rod" phrase, and cars blowing up and leaving parts on the dragstrip and so forth.
                        those cars are not stock, stock vehicles dont make enough power to blow up.

                        that is also why if you run certain classes, scatter shields and trans blankets are required. nothing would ruin your day more than a flywheel coming loose at 9000 RPM during a missed shift.
                        Cheesehead boating the Gulf Coast of FLA 27.51° N, 82.53° W

                        1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - https://forums.iboats.com/forum/owner...988-rogue-2420

                        Past Boats
                        1970 Wooster Hellion - Merc 9.8
                        2002 SeaRay 190BR - 5.0 - A1G2 - "Cheeseheads in Paradise"
                        1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

                        What’s behind you doesn’t matter.Enzo Ferrari

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