Your opinions on reliability and frequency of breakdowns.

EFI will always be more efficient in the fuel delivery and power throughout the RPM range. Reliability of efi comes down to manufacturing and installation of the wiring and sensors used. Sooner or later it will all be EFI. at least for sales of commercial equipment.

I say carb but completely reapect the efi. Efi is just chasing the car manufacturers 30 years later. Its a simple speed density system

EFI is the future - still years from reliable in salt water marshes...

I voted carb - the stock carb - not an aftermarket addon

My first MM a GDSD 8 LT ran for 20 years - first with points then stator - Ike took it

My second MM a 27 GDSD ran flawless for 7 plus years - sold it to a happy new owner

My third MM a 35 GDSD ran flawlessly for 7 years - sold it to a happy new owner

My current fourth MM is a 35 GDSD and has the stock carb and is rock solid reliable

Just my opinion but I will take reliablity over slightly better performance

KISS is my opinion, but I'm sure those that grew up playing video games would disagree.

Hes still sour he didn't get his atari for christmas.

Lol, i drive an 81 4x4 as the DD. In 8 yrs havent had to work on it once except for fluids. Knock on wood. my tv is color though

I've had 2 carb engines and still have one on my jet boat. There's a reason newer technology is called "improvements." On my jet sled, I had the option of EFI and carb. I went with carb thinking more mechanics would know how to work on it. I regret that decision and will never own another carb engine. I suppose if you like to tinker on your own motor all the time, carb might allow you to do that unless you have all the fancy electronic computer diagnostic tools. But, the performance(especially when changing altitude), starting, and reliability is much better with my EFI motors.

I think it's as simple as this: if you plan to use this boat extemely far from civilization or plan to be isolated from modern human networks, then get as simple of a motor as possible (carb). Otherwise go efi.

Nothing is that far from civilization anymore, except maybe in AK. I'd rather have a more reliable motor (EFI) with a low probability of any problems than one which is more temperamental (carb). I'm not that adept at troubleshooting carbs and the number of mechanics who are is also getting fewer and fewer. Swapping jets for different altitudes, worse performance with EtOH, and harder cold starts are just a few reasons I'll never buy a carb motor again.

I've had both... I opted for a carb this time around. Mostly because I eventually want to play around with different carbs and tune and all that stuff. If none of that sounds appealing, then efi is the way to go


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I had a Kohler, several years ago, with the Bosch EFI. I never got it to run right from day one. I then had a Kohler with the Delphi EFI and it is one of the finest engines I've had. Next I built a Briggs with the ECOTRONS EFI and have run it for years with zero problems. It even survived mating it up to a turbo. In addition to the ECOTRONS I run a briggs with the Delphi EFI and much prefer it over the carbed engine. The new Briggs with the trouble shooting light gives a capability to diagnose potential problems I never dreamed of with a carb. I routinely make 500 to 1000 mile trips on the Yukon River and for many reasons prefer EFI. Pluses are fuel economy, cold weather starting, smoother idle, trouble shooting light and throttle response. The most severe drawback for me was I had to learn something new, but I'm 77 years old so if I can do it, I figure anyone can.

The biggest fear about change is "change itself"

And Briggs awesomeness.

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Is "tinkering with a carb" really that much of an issue? I never had to touch my stocker and it didn't give me any guff. As for a mikuni its user manual is pretty straight forward and detailed. Once I got mine installed and dialed in I dont have to do much but move a needle clip position when it gets balls cold. Its like a 10 min job no more difficult than changing the oil. Does anyone really have to make changes to the carb all the time for it to work properly?

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Brick, valid point, but I'll play devil's advocate. A carb does not adjust itself to changes in atmosphere and engine needs like efi does based on sensor readings. It dumps fuel and flows air based on current jetting. It's less efficient than efi for that reason. It's simpler and easier to fix on the water when there is a problem, but if done well, efi is less sensitive to not being run for extended periods of time.

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Side note. Ive got a fresh efi on the table and the fuel pump wire is a little bigger thanbefore and there are insulators on the relay box. So maybe most of the new ones got this upgrade

Ive never not fished or hunted because of my carb. Again....not trying to make a case against EFI it just seems like there's this idea that if you run a carb your always messing with it and that hasn't been the case for me.

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Think I will just get a 120 hp rotary engine and adapt it to a GTR frame.

I had zero issues with a 37 eri PD over 18 months and I currently have a 37 efi GTR. We shall see how that one holds. I know that on a GTR, there is a clear difference in speed between a carb and EFI. I'm a fan of the EFI system

EFI is ALWAYS in the better state of tune vs a carb. No one can argue that point. Atmospheric conditions, do not matter the EFI can compensate.

Yep going to repower the mud boat before next summer. Looks to me like EFI wins, and maybe a mod or 2. Most likely a GTRXD37HP.

Seems those new fangled mud manufacturers ain't really trying to push their products to the mud boat world.

Towed 3 boats at Caddo this weekend!
2 EFI's, 1 Carb.
Or 2 Briggs and 1 Kolher.
1 Harness, 1 relay, and 1 fuel line problem.
WTH? with that relay/harness thing?

upgrading my harness so hopefully no issues but will be having several relays for now on in the boat . again thxs for towing me brother !!

yea that's right on warranty lol

I've seen more boats towed in from carb boots falling off/ripping than I have from efi issues.

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