Used Carb or EFI

[kinetoscope]

I'm looking at 90's boats and so I'm wondering if it is worth finding a boat that has efi over a carbed boat? Major change in efficiency/power? Maintenance?

I know elevation change is a good advantage to EFI but that is not really an issue for me.

 

[RiverDave]

I would go EFI all day long and twice on sunday.. but that's me.

If you plan on adding a blower or something I might rethink that.

RD

 

[kinetoscope]

I say I won't add a blower......but that's just what I say now.

Also, can carbed marine motors be retrofitted for fuel injection like cars? I'm not familiar with the differences on marine motors but it seems like there would be a problem with the oxygen sensor.

 

[BDMar]

All engines can be converted to EFI. Very seldom do we leave the O2 sensor past tuning.

 

[Dan Lorenze]

I would go EFI all day long and twice on sunday.. but that's me.

If you plan on adding a blower or something I might rethink that.

RD

X2

 

[BadBlown572]

I have zero problems with a properly tuned Carb. If done right, you should not be able to tell if it is carb or EFI when the hatch is closed.

 

[RitcheyRch]

Ditto that. Better mileage and more efficient.

I would go EFI all day long and twice on sunday.. but that's me.

If you plan on adding a blower or something I might rethink that.

RD

 

[paradise]

Had carbed engines until my current motor and to be honest as much as I think EFI is better I would have no problem with a well tuned carbed boat.

Now, in the desert, EFI for sure...

 

[kinetoscope]

I have zero problems with a properly tuned Carb. If done right, you should not be able to tell if it is carb or EFI when the hatch is closed.

How hard is it to tune right...or how much would it cost? My only experience with carbs is a two stroke motorcycle and it's a major pain. It seems to be very sensitive to temperature and humidity.

Had carbed engines until my current motor and to be honest as much as I think EFI is better I would have no problem with a well tuned carbed boat.

Now, in the desert, EFI for sure...

Why is desert difficult for carbs? Or do you mean buggies/atv's?

 

[kgt]

injection for sure, injection is so much easier and much better for daily use. I removed a 950hp on my 454 and installed a fast injection kit and its so nice to reach in and hit the key and it starts like a new car. The carb was well tuned, but with a big cam etc you could not start and go, with injection it can

 

[The key board warrior]

I have zero problems with a properly tuned Carb. If done right, you should not be able to tell if it is carb or EFI when the hatch is closed.

Take it to coast motor group. He can do it in 23 hrs.

 

[guest hs]

I prefer Carbureted engines on a marine engine. I know pretty much what ever happens to it I can usually fix on the water. Efi if you have an ecm failure you’re shit out luck and money. Just my 2 cents I’m old skool though

 

[82daytona]

View attachment 898167
Take it to coast motor group. He can do it in 23 hrs.

That what nine years ago

 

[rivermobster]

That what nine years ago

You might want to check the date on that invoice...

 

[82daytona]

You might want to check the date on that invoice...

Check the date on the thread...

 

[rivermobster]

Check the date on the thread...

Good call. First post too...

Is this a call out thread now??

 

[82daytona]

Good call. First post too...

Is this a call out thread now??

His other posts have already been deleted

 

[Wheeler]

His other posts have already been deleted

Why are his posts being deleted?

 

[DLow]

His other posts have already been deleted

Yeah. I wonder how long this one takes.

 

[82daytona]

Why are his posts being deleted?

Cause he’s a keyboard warrior

 

[Rbcconst]

I would go EFI all day. If i was able to tune a carb personally and enjoyed doing it then I would. A well tuned carb motor is a great motor.


Sent from my iPhone using Tapatalk Pro

 

[gqchris]

I see that he replied to Dannys post. RIP, sure do miss his knowledge and friendship

 

[racetrash]

In all my time wiring off-road cars, multiple championships, not 1 ecm/ecu failure. But that's only in then last 20 years.

 

[DRYHEAT]

I see that he replied to Dannys post. RIP, sure do miss his knowledge and friendship

It did seem a bit haunting.

 

[Husqy510]

It sounds like your looking at stock merc style power. EFI would be better, but i wouldn't hesitate to buy a carburetor deal if the price is right

 

[28Eliminator]

Good call. First post too...

Is this a call out thread now??

He was all over FB yesterday posting this. It was my evening entertainment

 

[82daytona]

He was all over FB yesterday posting this. It was my evening entertainment

But the carbs work now?

 

[Wheeler]

But the carbs work now?

After he spent another grand with Menace Marine to get 'em properly tuned.

 

[82daytona]

After he spent another grand with Menace Marine to get 'em properly tuned.

So you’re saying next time he’s going EFI

 

[Wheeler]

So you’re saying next time he’s going EFI

Next time he should go see Alexi @BoostPower !

 

[ramos45]

There's a certain type of pleasure gained from tuning in your carb and knowing it's good to go every week after that or even the following season when you recheck and it's still good. It isn't without it's pain for sure though.

When I tuned mine, the O2 display could only reach to the top back of my bolster seat. So there I am ripping back and forth across Lake Mead jotting down vacuum/boost, AFR and speed readings in 500 rpm intervals on a dry erase board I stuck on my dash. It got a little sketchy over 50mph but got it done in just a few hours and that's with switching out powervalves and jets a few times.

 

[lbhsbz]

In my experience...an outta the box new carb, with its factory setup will work very well if the thing it’s bolted too is in good shape. Remember...a carb is simply a metering device...it will mix a certain amount of fuel with air at a given ratio based on jet sizing. Power valves/accelerator pumps/air bleeds can be played with to adjust for conditions requiring something different, but they’re usually pretty close.

If something runs runs like shit...I typically make sure the carb is clean, make sure ignition timing is correct, and bring the carb back to factory settings to establish a baseline. Then make small changes from there if necessary. Starting with something that’s already all fucked up will never end well.

The only reason I hate carbs in boats is that most often they have mechanical fuel pumps...and most often boats sit for a while...which requires cranking to get fuel up the carb. Otherwise...if an idiot hasn’t screwed it up...it’s fine.

Any crazy tuning problems are usually the result of another problem with the engine that is screwing with vacuum...which is what makes a carb work work at all.

 

[LargeOrangeFont]

View attachment 898167
Take it to coast motor group. He can do it in 23 hrs.

Well Robert gave you a VIP discount at least..

 

[sintax]

Well Robert gave you a VIP discount at least..

haha was just coming to drop that one....

Robert there to save the day with his VIP discounts. Sounds like the crew was just out enjoying the boat for 24 hrs racking up some run time with some evening cruises

 

[Wheeler]

Cause he’s a keyboard warrior

I figured it was because he's an HTM owner.

 

[BDMar]

All engines can be converted to EFI. Very seldom do we leave the O2 sensor past tuning.

This post was 9 years ago using different EFI technology then available now. Now we always leave the O2 in and run in closed loop. Tail pipes must be correct length for this to work

 

[wagonicfolding]

There is a great reason why 80% of the hot rod market is still carb'ed. For $400 you can remove a carb from the box, bolt it on, and run down the road. Sure the best FI is better than the best carb but for most of us money is always an object. Carbs provide great value for the money.

 

[BoostPower]

This post was 9 years ago using different EFI technology then available now. Now we always leave the O2 in and run in closed loop. Tail pipes must be correct length for this to work

We make a o2 shroud bung in the case you run a short pipe. Also as you know the good systems allow you to set o2 feedback limits but the biggest mistake we see in general is that the base maps are never tuned properly and a lot of consumers leave the learn or closed loop on and when the sensor takes a crap the day is done. Better to have a great map and use the sensor for less then 10% adjustments. Hope your well[emoji1303]


Sent from my Efi Beacon!

 

[Shlbyntro]

In all my time wiring off-road cars, multiple championships, not 1 ecm/ecu failure. But that's only in then last 20 years.

I've seen much more in boats. At least 12 in the last year. Most but not all of them in joystick boats. But that's only in my 12 years