I have been thinking about putting this on my 5.7 liter merc inboard. Seemed like it was a very simple upgrade. Can you do a update? Has this been a good choice? The only reason I want to upgrade is I live in Alaska and I have had alot of issues with warm ups with the old carb. I sit at the dock for 15 mins maybe even 20 mins warming up the carb and sometimes still have idle issues. Have you had any idle issues after this upgrade? Thanks

What is your idle rpm in water?

Where is this kit from?

Is there a part number for the kit?

Hi, can you tell me where I can buy EFI for mercruiser 4.3?

You were able to use the stock fuel pump?

How much less does the engine this way?

Although it will run you should never install auto parts on a marine engine. The results can be catastrophic.

All the people asking what brand and where. Does nobody click on more in the discription?

Very nice. One suggestion: you may want to install a fitting to transition between the metal fuel line and the fuel hose rather than ring clamping directly to the metal line. This way it would be USCG compliant and less prone to leaks.

Nice job!

Fuel line is safer with a hard line because of the heat of the engine. You don't want a hose with fuel melting on top of your engine 🫠

Where did you purchase this kit from? Or did you just source each component

Nice work. I wished they had this years ago, would have saved a few choice words. I will do this on my next boat.

we have a mercruiser 5.7 that upgraded to a rochestor tbi product... Im having trouble finding out what wire matches with the green/white wire comming from the module on the manifold riser? wiring MESSS! Any help?

I want to do this to mine.

What is the name of the conversion kit and where to buy it?

Hi I have a 30 maxum boat with twin 4.3 motors i would like to change like you did were can i buy the kits like yours?

I did the same conversion from affordable fuel injection. Works great. Curious, how did you end up wiring your shift interrupt switch? I had mine wired up to the negative side of my coil to interrupt the pulsing. My ignition module (inside the distributor) recently failed after about a year of use and I’m not sure if that was because I grounded the unit (at the negative post on the coil) via the shift interrupt switch or if it’s just a fluke… curious how you wired yours up. Thanks in advance

Yo great job question is that a searay ? Have a had trouble getting to the starter bolts in have an 21.5 express cruiser with a 5.7 merC i have been struggling to get to it and pulling this motor is a nightmare any ideas ? Ive even welded tools to get to it with no luck 😔

amazing video loved the small humor in it great job man hope she is alive and well.... that sound at 4,400 is such a beautiful sound the women won't understand... my wife is the same way lol

Where did you purchase the kit from

Thanks for sharing. Nice job! That engine sounds buttery smooth.

No O2 sensor?

where can I find this kit?

Where you purchase, kit EFI conversion My mercrusier mariner 4.3 its a boat tahoe 2008 excelent, thanks

which kit did you install?

Was it a noticable difference?

Runs sweet as.

Gday Brian. Did that kit come with an oxygen sensor?

Better fuel economy now?

I am looking forward to making the swap on my boat soon.. Thanks for your video...

Holley sold a TBI kit like this back in the late 80's. I had converted my 84 carbureted Camaro. After a year the ECU failed just short of warranty so I went back to the rochester carb. It was a costly kit back then and a costly repair. Since this is unlikely a potted ecu, I would highly recommend you mount the ecu on rubber vibration dampers and mount it as high as possible as it likely will be exposed to moisture

Wait, what's the power steering pump for?

Can we have a video of this out on the lake now? Are you pleased with the Lake performance?? Any concerns crop up since installing it? Any regrets?

So you running fuel injection with carb fuel pump?

Great job do you have to put a fogging oil on it when you winterize it like the carb?

I’m surprised to read that you lost some hp. I have a 5 litre carb and from what I have seen is the 5 litre fuel injection has like 40 or more horsepower.. I was considering doing the switch only for more horsepower.

Thanks for sharing

Great work! you can see the biggest advantage of efi over carbs is better cold starting and smoother running....too bad that you didn't have the best carb used on marine engines (Rochester Quadrajet) which has not been made since 1990, these when properly set up run almost as well as fuel injection, cold starts are not as good as efi but overall running and power is excellent. I have one on a 1988 4.3 same engine as yours but the older pre Vortec with no balance shaft. They are complex to rebuild for a beginner but once you do it, the next time it's easy. I think they are superior to both the Weber and Holley marine 4bbls. For carbs the cost factor is a big plus as rebuild kits are only about $50 and the older engines could use the simple and cheap to replace mechanical fuel pumps. Even the electric pumps for the lower pressure of a carb system are not expensive. Also, you might not be aware of this but I felt the need to point it out, those one piece exhaust manifolds are known as engine killers, they were cast poorly and have inconsistent wall thickness. When they fail (crack) they will put water right into a cylinder and rust the cyl walls and valves. Get rid of them before its too late. Barr Marine makes a nice conversion kit. Merc only made them for 3 years because of the casting problems. I had the OMC version of the same design on my 4.3 and never had a problem but I guess I just got lucky, I did convert it over to the later OMC/Volvo 2 piece exhaust style.

How is the coil connected? Do you have a white and a pink wire connected to it? If so which one is on the + and which one is on the negative?

Sounds like a lot of work !

Hello I am doing something similar. Where did you hook the crank singal wire to on the coil?

Hi where did u bought this system and how mutch it cost

How has the conversion been holding up so far? Have you had any reliability issues? I'm thinking about getting one of these kits for my Ski Centurion with a Ford 351W.

what kit is this

Wonder if they make one of these for the 4BBL version of this motor

Can you tell me where you put the O2 sensor?

1.4k views and only a few subscribers.....typical KZbin stuff. I subscribed to your channel. Great video.