Honda V6 engine in a boat?

[nukejr]

I have grown up on boats, and repaired boats in every way. I am also intimately familiar with the various propulsions systems on boats. With all that said, I pose the questions:

1. Is it feasible to use (for example) a VTEC V6 as part of an inboard/outboard setup?

2. Would there be any conflicts with the ECU, which would prevent or make it not worth while to attempt using the engine?

3. How would the engine handle running at 5-6k rpm for sustained periods of time under the load of pushing a boat through water vice a car on the road (this question might have an obvious answer, or maybe not)?

4. Are there any other conflicts that I might not have thought to ask about that would make this idea not plausible?

Note: I would plan to use a heat exchanger for engine cooling, so no saltwater would circulate inside the engine.

Any insight on the matter would be greatly appreciated.

[mondojackal]

I have grown up on boats, and repaired boats in every way. I am also intimately familiar with the various propulsions systems on boats. With all that said, I pose the questions:

1. Is it feasible to use (for example) a VTEC V6 as part of an inboard/outboard setup?

2. Would there be any conflicts with the ECU, which would prevent or make it not worth while to attempt using the engine?

3. How would the engine handle running at 5-6k rpm for sustained periods of time under the load of pushing a boat through water vice a car on the road (this question might have an obvious answer, or maybe not)?

4. Are there any other conflicts that I might not have thought to ask about that would make this idea not plausible?

Note: I would plan to use a heat exchanger for engine cooling, so no saltwater would circulate inside the engine.

Any insight on the matter would be greatly appreciated.

why would you want to? im just curious. the 3.0 liter v6 (6G) has 200hp and 195 tq (7G) has 244hp and 212tq, the 3.2 has 260hp and 230?tq, and i dont know the stats for the 3.5.

that's really not a lot, although, a v-tec boat would sound pretty sweet.

[npor]

welp. we'd also have to take into consideration the size of the boat, and what style hull.

[NAiL05]

There you go. I had a pictuer of the lineup of Honda Boat motors but that was the biggest one. I think that one is a v6 if I remember. If I find the lineup of the motors I took I will post em but that was at the Honda Museum in Japan.

[tommi]

mmmm VTEC powa of dreams, put a VAFC on that bish

[Haccord21]

Just go for it. cover the bottom of a V6 accord so no water gets under neath and it floats. then take the front or rear tires. which ever drive it is. and slap some propeoller things or something. Basicly put a car in a boat. have fun.

[texasvtak]

wtf? Vtec in a boat?

[91h22cb7lx]

i dunno why but ive always wanted to see a cb7 hitting vtec across a lake

[cp[mike]]

Just go for it. cover the bottom of a V6 accord so no water gets under neath and it floats. then take the front or rear tires. which ever drive it is. and slap some propeoller things or something. Basicly put a car in a boat. have fun.

was this a joke or a real suggestion? people use "car" motors for airplanes and boats all the time... and it doesnt require mounting the whole car on the boat

[owequitit]

LOL!

Anything can be done, and yes I am fairly confident that the engine could handle the duration and revs just fine.

I speak from experience... LOL!

Most small boats come with an inline four banger of ancient OHV design, so I am sure the J30 would be plenty powerful.

However, the ECU to run it is dependent on emmissions hardware for a car, and would be finnicky to go get working in a boat, especially if there are no emmissions.

Also, the J30 is aluminum block, and typically iron block engines are preferred because they are less susceptible to corrosion.

With potentially nasty lake water, or salt water, this would certainly be a problem over time.

[According2Aaron]

One thing I've always wanted to do is take an old Ford or Chevy truck with a big block V8, weld pontoons under it, rig up rudders or some sort of steering system to it, drop the drive shaft from the rearend into the water, and weld a big propeller on the end of the driveshaft.

[nukejr]

Here the premise for the idea. First, a newer used Honda 225HP outboard is going to cost me around $12,000. I have been pricing engines online for around $3000. Along with the initial cost, I would be extremely surprised to find that the car engine gets worse fuel economy than an outboard.

Second, I am in love with the simplicity of maintenance of a car engine. My last boat had a 3.0L 4cyl GM engine. Change the oil every 15-20 hours and you’re done. Outboards have so many parts like power packs and coils, etc., that are almost expected to fail eventually. I would like to skip the whole "eventually" part, especially if I am offshore.

Lastly, my 91 Accord runs quieter than almost any outboard I have ever heard. A much newer model runs at least at the same, or more likely, a lower decibel level. Plus I could easily enclose the engine in a sound insulated compartment.

The engine would easily fits inside my boat: it's 24' long. As far as the corrosion concern, I would use a heat exchanger between the ocean and the engine.

Thanks for the feedback so far!!

[93accordexcoupe]

24' boat? v6 honda motor. your not going anywhere dude. dont think just because it has vtec it will get up and go. what transmission are u going to use? u know its only going to be one foreward gear right? ive never seen a car motor mated to a 1 gear tranny. a regular car transmission isnt gunna cut it either. although it would be sweet if it worked, it wont. the second u put the clutch in u would drop atleast 10 mph and doing that every gear would be rediculous. there is only one boat out there now with a transmission more than one gear. i think tige makes it. but its clutchless and works right away. thats a whole different story tho.

[The G-Man]

You would not use a transmission. The output shaft on the motor would be attached to the driveshaft/propeller. Then you would have to route the throttle cable to the throttle in the cockpit.

[93accordexcoupe]

You would not use a transmission. The output shaft on the motor would be attached to the driveshaft/propeller. Then you would have to route the throttle cable to the throttle in the cockpit.

hows he gunna stop the boat? nothing but D? doesnt work well in the water. unless its a seadoo, but people still have problems with that.