Dual Holley snipers on a flathead?

@Mike Lawless
In my previous post is One ecu piggyback second TBI Housing.
Fuel Only .....

Then another way of running Two
TPI with ECU's each thinking it's
a 4 cylinder.


I deal with a tech / research and development that I can communicate with that we talk out side
Of how its designed for common use for a Bolt on consumer / user,

The second 1100 you would not use ECU @ all when I say piggyback ,
It would be gutted , the only thing used
Would be injector wiring piggyback to main Ecu in the one that is main , both TPI with internal regulator's
Removed , Using One external
Fuel regulator, one fuel line to
connect / bridge both TBI housing .
This is where laptop tunning is used
To adjust program fuel pressure requirement & changing duty value
The Ecu does not know 2 injectors
Thinking One . This is done because
Its 100pd injector if you would leave @
The 60ish psi with 2 injectors , one in each TPI , the duty cycle would be like 20-30% may be lower. Fuel puddling.
So lowering fuel pressure down 30ish psi in program adjust duty cycle to 65-75 % injector ,
Less fuel & speeding up duty makes it more steady efficient .

 

The Holley Dominator EFI will control two throttle bodies at the same time, but it isn't cheap and I don't know if it would work with single throttle bodies.........but if you want two TBs then its better to have one controller. Might call their tech line and ask.

FI Tech also has the means to control 2 throttle bodies but I don't know anything about them. Saw a Camaro at the Street Rod Nats that drove up from Tennessee and had one. Guy seemed happy with it.


Here is a slightly older book where a guy converted his to two throttle bodies and a supercharger and its a good read. Look for it on Amazon. He steps you thru his problems.

EFI Conversions by Tony Candella


Here are a couple pages








Anyway it will give you some food for thought hopefully............

This is for older Holley stuff and you may be able to use OEM throttle bodies of some kind on your flathead, like something from a later model Ranger with a 4 cyl engine driven by Holley software. Don't know if thats doable but again something to check in to.

 

yeah, they don't look very much like Strombergs but at a glance...Autotrend EFI - EFI 97

 

So, these EFI units are designed to work in tandem like the OP wishes. With a little detailing and creativity, I could make those look a bit more legit. 203 CFM per unit if I read that correctly.

 

No originally Op want's left and right to be independent
Twin 4 cyl , 2 Ecu witch wound be 2 of all ,etc.

 

Oh, well how the hell is that going to work? So, it could run as a 4 cylinder? I know Austin Martin has a 12 cylinder that they claim can shut down one bank of cylinders while the catalytic converters cool on that side, and then switch banks again. Obviously just a cruising, freeway thing to save gas. So, I guess it can be done. I missed that part of the project parameters.

 

The exotics from Italy tend to do that, separate controls for each bank. Fuel, timing and sensors.
The Viper used a 8 cylinder control and a piggyback 2 cylinder control.
This could be done, it's just is going to be a lot of effort for a pretty offbeat result.
You have single 2 bbl intakes, dual inline 2bbl intakes, all the way up to Hilborn based EFI.
https://myflatheadford.com/hilborn-fuel-injection-intake/

If the entire reasoning is to run each bank separately, that last one could be set up to 'shut off' each bank (fuel and ignition) on command, provided the controller also handles spark. Ford used to have a cylinder balance test built into the OBDI software. So long as the lower end can handle the uneven power pulses, it would require a higher RPM to keep running. A heavy flywheel would probably be a useful addition.

Again, I'm not trying to dump on OP's 'What If'. I am simply saying it's a lot of resources to achieve a rather esoteric result. Airplane engines have been designed to run upside down. I'd imagine that with enough work, a flathead could too, with a ton of effort concentrated on the oiling along with intake and cooling.
https://www.jalopyjournal.com/forum/threads/flying-flatheads.1008972/

 

Two single bbl throttle bodies and enough fuel for 250hp. Trying to do something as simple as this using a pair of Snipers is really pounding on that square peg. Especially the ideas of trying to divide the engine into a pair of four bangers.

Two 50mm throttle bodies, two 60lb injectors, TPS, a MAP sensor, and a coolant sensor will be enough to get a Microsquirt working well. Crank signal comes from the ignition. No crank or cam wheels needed. Add a pump, regulator, and a return line. It's not that hard.

Here's one guy's take on how to do it. He's going turbo, but the EFI system wouldn't be any different:

 

Operating any single V8 engine with separate and independent controls for each bank would seem to create unnecessary problems. Co-ordination needs to happen so that the results aren't continuously fighting one another.
If one bank is having a lean condition and is detonating while the other bank is running fine........what do the 2 independent computers do next? I don't see any benefit to be derived from a system like that.

 

This guy was at the All Ford Day this summer in Denver

 

Great pictures, love to see that kind of innovation !

Did you get to hear it run ?