Ok so i just discovered the megasquirt EFI controllers. for those of you who havnt heard of them they sell kits where you can basically build your own EFI computer and they are totally tunable. So that got me to thinking about a Multi-port fuel injected 292. Noramally im against electronic crap but for everyday driver efficiency(or super high performance) it could see merit. So i thought i would start this thread and throw out an ideal about how to build such a system and see what if there is any interest.



So first of all you would need the electronics.

1. mega-squirt controller

2. mega-squirt relay board

3. wiring/sensors/etc.

then the other parts

1.throttle body (5.0 ford?)

2.injectors

3.intake(possible take a mummert alum and drill and bung for injectors and adapt throttle body?)

4fuel system





There many more aspect of a system like this but this is a jumping off point for a discussion at least. i realize the modified intake might not be as good as a custom one but for an everyday driver i think it would work just fine by taking and drilling and welding in bungs in each of the runners to allow to put in 8 injectors. this would make for a pretty reasonably priced injected system as apposed to 2-6 grand for one. So what do you guys think

It would be quite a feat to figure out how to fit 8 injectors in a stock manifold. The top runners are easy. There is limited room available for the lower runners. Throttle bodies with the high pressure multi-port injectors seem to be a good "modern" way to go. This has had me thinking of fitting 4 injectors very near to where the carb mounts.

A 5.0 throttle body should be fairly easy to adapt. I know Edelbrock makes an adapter that mounts to a square bore carb flange. I've seen a few others but I don't know if they are production or custom pieces.


Lawrenceville, GA

oh yea i forgot about the stacked ports, might still be able to fit them in tho. Its been a long time since i did anything with my 292 so i was just thinking. keep the input coming tho

This thread will become dribble like other forums have, if it were that simple it would have been done and not practicle for everyone to rush in and do, check the Hollowhead guys who have plenty of megasquirt expierence and modified y block induction systems. Lets not get carried away with pie in the sky.

  AussieBill            YYYY    Forever Y Block     YYYY

 Down Under, Australia

Jep, been there, done that or how they say . LordMrFord is the man to ask about Megasquirt things. I just fab hard pieces...

 

http://www.youtube.com/watch?v=LqSuzbN7TLM

 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

TBI-style fuel-only is pretty simple and is good as 8 point.

I have Megasquirt 2 assembled by myself, but MS 1 is easier and got almost same stuff than MS 2.
Assembling is quite easy if you know anything about electronic circuits.
If you not then you can get a assembled from diyautotune.com like cheapest version, http://www.diyautotune.com/catalog/megasquirti-programmable-efi-system-pcb22-assembled-unit-p-34.html

I got quite new WinXP laptop with USB adapter in my own project, but I had older laptop with Win98 and serial port, which worked just fine. I recommented machine, what can run Tunerstudio, http://www.efianalytics.com/TunerStudio/ , cause that is awesome program to MS tuning. MegaTune is lighter, but not easier. Works still fine.
Mating the MS box to tuning program is hardest thng if you are not computer person, but I hink, TunerStudio is made is easy.

MegaManual is Megasquirter's bible, but it starts to be hard reading for beginner
http://www.megamanual.com/mtabcon.htm




In simplest of versions, MS EFI needs some TBI-style throttle body like 350 Chevy TBI unit.
It has injctors, pressure regulator, Throttle position sensor(TPS) and all the fittings.
Then you have to have atleast 18 PSI fuel pump (if using not TBI injectors, you need 60 PSI) and return line to tank or surge tank.

Then you need Intake air temperature sensor(IAT), Coolant temp sensor(CLT) and Lambda sensor.
Simplest way is get them from Chevy, narrow band(normal) Lambda is better to be 3 or 4-wire version.

RPM is easy to get from some pointless module in distributor.
And if you want to upgrade to Ignition control too, just lock the dizzy and wire the coil from some coil driver like Bosch, MSD or Crane.

Some wiring example from my project album...

Edit: I found a wiring pic for TBI and simple ignition control, RPM pick up is like four bolts on damper and HALL-sensor but it can take from dizzy too.



Hyvinkää, FI

Eaasyyy!!! Jeah?

 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

Can Megasquirt do sequential firing of multi-port injectors? The diagram looks to be a batch fire system.


Lawrenceville, GA

MS3 can.


Hyvinkää, FI

wow you guys have just turned this thread into a wealth of information for me. Ive been reading a lot about the megasquirt systems and am seriously considering coming up with something for my 59 4x4. That intake looks really sweet and really doesn't look that hard to build so i might be pirating your ideals if you don't mind. I would really like to eventually control both ignition and fuel with the megasquirt, probably set it up for just fuel and when thats all dialed in hook up the ignition so im only dealing with one variable at a time. What would be the best way to control the ignition as obviously the dizzy isnt set up for it. could you replace the pionts dizzy with an electronic one like msd makes and wire it that way? just curious as i think it would make for a neat truck to have an electrically controlled 292 even tho normally im a points and 4 barrel kind of guy. So do you have any of the systems you guys are building up and running with any feedback on power, ease of starting, fuel efficiency, and so on. Thanks for the replys guys.