SVO42
Active member
No, I don't mean a fuel system for open topped-vehicles, either.
I'm thinking of swapping a 300 into my '94 Explorer within a year or two. I want it to be EFI for off-roading and general drivability. I have seen pics of 300s installed into 2 Rangers, so it is do-able. One problem with fitment is the stock EFI intake interfering with the heater box.
I'm considering using an EFI 300 with a carb intake. I'm hoping that the carb intake won't interfere with the heater box as much. The intake would just have to have fuel injector bungs installed.
I'd like to use Megasquirt and also set it up as a flex-fuel vehicle (which MS II allows). Now, since I'm using a carbureted intake, could I just use a carburetor for a throttle body? I don't see why not. Just don't connect any fuel lines to it.
This leads to an idea: if the engine has a carburetor on it anyway, I could easily switch between using EFI OR a carb for fuel delivery.
Other considerations: MS allows for any distributor/ignition type, so why not just use an old points distributor and lock everything out and let MS handle spark duty? Cool. Spark is done, how about fuel? Port EFI needs a high-pressure pump which my Explorer already has. Would there be any problem with leaving a mechanical fuel pump hanging off the block as long as no fuel lines were connected? I can't think of anything.
So, what I would have is a fuel-delivery setup that could be easily switched between EFI and carburetion. If I ever had any sensor or electrical gremlins with the EFI, I would just have to make a few quick changes and let and old carburetor and set of points make the engine run.
Note that all of this would also be beneficial in the unfortunate event of an EMP.
What do you guys think?

I'm thinking of swapping a 300 into my '94 Explorer within a year or two. I want it to be EFI for off-roading and general drivability. I have seen pics of 300s installed into 2 Rangers, so it is do-able. One problem with fitment is the stock EFI intake interfering with the heater box.
I'm considering using an EFI 300 with a carb intake. I'm hoping that the carb intake won't interfere with the heater box as much. The intake would just have to have fuel injector bungs installed.
I'd like to use Megasquirt and also set it up as a flex-fuel vehicle (which MS II allows). Now, since I'm using a carbureted intake, could I just use a carburetor for a throttle body? I don't see why not. Just don't connect any fuel lines to it.
This leads to an idea: if the engine has a carburetor on it anyway, I could easily switch between using EFI OR a carb for fuel delivery.
Other considerations: MS allows for any distributor/ignition type, so why not just use an old points distributor and lock everything out and let MS handle spark duty? Cool. Spark is done, how about fuel? Port EFI needs a high-pressure pump which my Explorer already has. Would there be any problem with leaving a mechanical fuel pump hanging off the block as long as no fuel lines were connected? I can't think of anything.
So, what I would have is a fuel-delivery setup that could be easily switched between EFI and carburetion. If I ever had any sensor or electrical gremlins with the EFI, I would just have to make a few quick changes and let and old carburetor and set of points make the engine run.
Note that all of this would also be beneficial in the unfortunate event of an EMP.
