Honda Power

"HammerheadFistpunch" (hammerheadfistpunch) 11/07/2016 at 17:51 • Filed to: None

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Don’t mind me, I just think its fascinating that you can buy as many Accord/Crv motors you want and fix them to a boat

Same with the Fit

And the Odyssey/Ridgeline/Pilot/Accord V6

I know many of you know this or if you didn’t it isn’t really surprising, but I do think its fascinating to take an automotive engine, wrap it up in a cowl and plopping it on the back of a boat, especially if there are multiples.

Yes, the 7 marine engines are cool, but something about 3+ narrow angle Vtec V6's humming along as they dangle over the water is interesting to me.

Future next gen S2000 owner > HammerheadFistpunch 11/07/2016 at 17:58

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How much does these motors actually share with their automotive cousins?

HammerheadFistpunch > Future next gen S2000 owner 11/07/2016 at 18:01

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Enough that Honda spells that similarity out on the website.

http://marine.honda.com/outboards/motor-detail/BF250

Same configuration, same displacement, same heads, etc. I suspect there is a difference in ECU, maybe injectors and a modified oiling system but mostly similar...to the point that I bet you could move parts around as needed.

Nibby > HammerheadFistpunch 11/07/2016 at 18:08

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wow the pilot is literally a BOAT on wheels!

HammerheadFistpunch > Nibby 11/07/2016 at 18:09

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Batman the Horse > HammerheadFistpunch 11/07/2016 at 18:12

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The fact that these engines sit on-end I would think the way the injected fuel swirls into the combustion chamber is different enough that the heads would be modified versions of their car counterpart.

Daily Drives a Dragon - One Last Lap > HammerheadFistpunch 11/07/2016 at 18:17

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I assume they changed the oil pickup though.

HammerheadFistpunch > Batman the Horse 11/07/2016 at 18:18

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Why? I mean, i guess they could reposition the injectors to the top of the marine intake (on their sides in a car) to gravity assist, but a head redesign? Not sure, bu I can’t imagine they would need to.

HammerheadFistpunch > Daily Drives a Dragon - One Last Lap 11/07/2016 at 18:19

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yeah, thats a given.

Daily Drives a Dragon - One Last Lap > HammerheadFistpunch 11/07/2016 at 18:23

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Unless they didn’t and secretly the Pilot is the best car for driving on two wheels ever.

HammerheadFistpunch > Daily Drives a Dragon - One Last Lap 11/07/2016 at 18:26

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J_P_Cars10s > Batman the Horse 11/07/2016 at 19:24

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Gravity is negligible at that point.

nafsucof > Batman the Horse 11/07/2016 at 20:32

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Direct injection probably?

Batman the Horse > HammerheadFistpunch 11/07/2016 at 22:25

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You’re right. Some quick googling not only confirmed what you said but also pointed out:

1) Marine applications run at lower RPM but wide open much of the time. For this they use a different cam profile and different compression.

2) Marine engines requre marine-specific gaskets, seals and fittings to protect against a much more corrosive environment.

HammerheadFistpunch > Batman the Horse 11/07/2016 at 22:31

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cool stuff, thanks for finding it.