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 Boss H drive 3700 EFI on excel 1751 
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Post Boss H drive 3700 EFI on excel 1751
This is the new 37 HP EFI Briggs on a Boss Drive. Empty I'm getting 30 and with three people 26. There are videos now on youtube of it running and showing some of the features. More videos will come soon.


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Sat Jan 17, 2015 1:08 am
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Post Re: Boss H drive 3700 EFI on excel 1751


Sat Jan 17, 2015 3:54 am
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Post Re: Boss H drive 3700 EFI on excel 1751


Sat Jan 17, 2015 3:54 am
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Post Re: Boss H drive 3700 EFI on excel 1751
Thats a sweet looking boat. I never thought i would like that camo But dam it looks good.

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Sat Jan 17, 2015 4:12 am
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Post Re: Boss H drive 3700 EFI on excel 1751
Where did you buy that rig from?

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Sat Jan 17, 2015 11:43 am
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Post Re: Boss H drive 3700 EFI on excel 1751
Nice rig. Henderson implement in lake Charles has 2 boss H.


Sat Jan 17, 2015 11:45 am
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Post Re: Boss H drive 3700 EFI on excel 1751
Video link ?

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Sat Jan 17, 2015 12:37 pm
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Post Re: Boss H drive 3700 EFI on excel 1751
did it quiet down any - the vid on fb sounded awful

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Sat Jan 17, 2015 9:51 pm
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Post Re: Boss H drive 3700 EFI on excel 1751
Got a link to the video ???

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Sat Jan 17, 2015 11:22 pm
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Post Re: Boss H drive 3700 EFI on excel 1751
Link?


Sun Jan 18, 2015 9:53 pm
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Post Re: Boss H drive 3700 EFI on excel 1751
There is one on tos

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Sun Jan 18, 2015 10:45 pm
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Mon Jan 19, 2015 5:46 am
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Post Re: Boss H drive 3700 EFI on excel 1751
I would Be nice to see a Video of it on the water running.
Any Footage Of the GTR's with the new 37 EFI Anywhere ?

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Mon Jan 19, 2015 7:26 am
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Post Re: Boss H drive 3700 EFI on excel 1751
X2 ^^

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Mon Jan 19, 2015 11:32 am
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Post Re: Boss H drive 3700 EFI on excel 1751
https://www.youtube.com/watch?v=D_F0a5L ... e=youtu.be

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Mon Jan 19, 2015 11:44 am
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Post Re: Boss H drive 3700 EFI on excel 1751
He doesn't let the fuel system pressure up, turn key to "on" wait couple seconds for fuel pressure then crank. Here is a GTR with PD EFI air temp outside was -7 when I made this - primer bulb was froze to stiff to pump

http://youtu.be/Z9mQAME7wHo

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Mon Jan 19, 2015 12:04 pm
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Post Re: Boss H drive 3700 EFI on excel 1751
Nice looking rig you must have some special powers to be able to tame a unicorn :D :D good luck with the new boat.

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Mon Jan 19, 2015 9:06 pm
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Post Re: Boss H drive 3700 EFI on excel 1751
Von that motor started and ran great , for being so cold.

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Mon Jan 19, 2015 9:11 pm
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Post Re: Boss H drive 3700 EFI on excel 1751
I wish my other Vanguards started that nice in the cold :?

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Tue Jan 20, 2015 7:08 am
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Post Re: Boss H drive 3700 EFI on excel 1751
Not trying to start a EFI vs Mikuni war. If you put an Electric fuel pump on a properly tuned Mikuni and turn the key to on and wait a couple of seconds it will start just as easy in extremely cold conditions. J/S


Tue Jan 20, 2015 8:22 am
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Post Re: Boss H drive 3700 EFI on excel 1751
anything would work better than the stock carb - I hope.

I put the videos up to compare the "drive train" noises of each motor. I thought the H has some (a lot) weird gear noise,,,

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Tue Jan 20, 2015 10:32 am
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Post Re: Boss H drive 3700 EFI on excel 1751
I'm thinking I might give the sport h a try in the near future looks like a nice mudmotor


Tue Jan 20, 2015 10:39 am
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Post Re: Boss H drive 3700 EFI on excel 1751
Nice looking rig for sure.

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Tue Jan 20, 2015 12:39 pm
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Post Re: Boss H drive 3700 EFI on excel 1751
The H series must be 3-4 mph faster than the V series from what I have seen.


Tue Jan 20, 2015 1:27 pm
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Post Re: Boss H drive 3700 EFI on excel 1751
The lower HP V's are pooch's

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Tue Jan 20, 2015 1:48 pm
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Tue Jan 20, 2015 5:09 pm
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Wed Jan 21, 2015 3:53 am
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Post Re: Boss H drive 3700 EFI on excel 1751
Does it really matter if your engine takes 3 seconds or 30 seconds to start? I have been in this site for years now and have never heard of anyone say " I couldn't hunt this morning b/c it was too cold to start my motor."

I understand it doesn't get really cold where I'm at. I pull the choke out on days where I think I need it. After all isn't that what the SOB is for:lol:.

With that being said I will have an efi engine one day.

Note this mainly for the guys in the south that justify the efi bc of the cold starting abilities. You crazy northerners that hunt icebergs may need efi. He'll I don't know nuffing!!


Wed Jan 21, 2015 6:00 am
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Post Re: Boss H drive 3700 EFI on excel 1751
OK - so I was showing off on the cold start with EFI.

But nobody in the room has addresed the "white elephant" what the hell is that rapping noise the H is making? It sure isn't the engine.

Jez it sounds like MC White Bread on crack and does it get any bettter as the drive line works in?

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Wed Jan 21, 2015 7:17 am
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Post Re: Boss H drive 3700 EFI on excel 1751
Baron it wasn't meant towards you buddy. Obviously you need it more than us southern folk. It was for the southern boys that say efi is the bomb cause it starts better and you don't have to use the choke when cold out.


Wed Jan 21, 2015 7:58 am
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Wed Jan 21, 2015 8:29 am
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Wed Jan 21, 2015 8:33 am
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Post Re: Boss H drive 3700 EFI on excel 1751
if memory serves me correct, the mikuni choke is to be used after the motor has started

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Wed Jan 21, 2015 5:11 pm
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Thu Jan 22, 2015 7:27 am
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Thu Jan 22, 2015 9:54 am
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Post Re: Boss H drive 3700 EFI on excel 1751
looks like the "clutch dogs" like in the LU of an outboard only on the drive shaft along with main gear cluster, you can see shift fork and collar (yellow) and drive gears.

but clutch dogs are not really a clutch more of a synchronizer for the directional gears – forward or rewind

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Thu Jan 22, 2015 10:21 am
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Thu Jan 22, 2015 11:03 am
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