converting to fuel injection

I suppose the first question is why?

If you were going to spend the money....there are a lot of better choices such as the Holley Sniper that aren't put together with used parts.

I have looked at this a couple of times and the fuel delivery is the big hassle with anything EFI. You have to run a return line back to the tank to make it work and find a way to keep the high pressure fuel pump cool. Some people have access to the to the top of their tanks most don't which means putting a tee fitting on to each filler hose or piping it into the water separator for each engine. It really has to be worth your while to do it and the payback is dubious.

Additionally the kit you reference is for a small block.

There are better ways to make your big blocks start easier and run better. To solve the starting problem....switch to low pressure electric fuel pumps. If you are concerned about the Weber's efficiency....you can always fit an air/fuel ratio meter to each engine to monitor how the engine is running.
 
John,

I did add an electric fuel pump this year and start up are awesome now. I was just always curious about this, seen it advertised for a while. just wanted to see if anyone had good results with swapping this in
 
Don’t know about the conversion in a boat but I’ve spoken to a few guys who have done a conversion to FI in their classic cars and they were all very happy with it.
They claim much better performance.
That’s a hefty price tag though to cover two motors.
I’d probably consider it if both carbs needed rebuild or replacement.
 
I've done the programmable DFI system thing in the hot rod world. Def pretty cool stuff.

Converting a carb to a EFI carb (keeping the same manifold).....it might give you some convenience with cold start, and needing to rebuild carbs over the years. You will be introducing more electrical connections in salty air, so you have that.......

Big question is what are you trying to solve?
 
Saverio said:
John,

I did add an electric fuel pump this year and start up are awesome now. I was just always curious about this, seen it advertised for a while. just wanted to see if anyone had good results with swapping this in
Click to expand...

I have done a few EFI changes in cars and I do like the automation and information display. On a boat .....it is just a different game. The engine is always under load so I doubt you would see any performance difference between a well-tuned carb motor and EFI. The other issue is the O2 sensor. EFI is dependent on the o2 sensor for closed loop operation. Any degradation of the O2 sensor.....and the ECM gets the wrong data.

As a side note this year I did install an air/fuel O2 sensor and gauge on each of my engines in an effort to do better with fuel management. When I changed to Holley carbs 10 years ago it was hit or miss reading the plugs to get the jets right. The O2 sensors and AF gauge give you an exact reading. Not surprising ......both carbs were running rich which means that the O2 sensors and AF gauges will probably pay for themselves in one season.
 
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