Fuel injection on a 250 I6?

[ACS081783]

I've been doing some thinking and digging around on the internet for some information to put fuel injection into my I6. My goal is better gas mileage and more power/torque. I found that Clifford Research had an intake manifold that would allow a triple weber DCOE throttle body injection setup. Also found the "crazy torque" head but that's off topic and another project. My question is... if I were to do this triple weber sidedraft setup, what size injectors would I want to use? Has anyone tried this setup with any success? Any information would be appreciated.

[edman87]

I figure the easiest way would be a 4 brl intake adapted to a single tbi. The only reason I say to go with the 4brl intake is because I don't imagine the factory log would flow very well and if you have to adapt, it would be easier to adapt to the 4brl than a single? barrel intake.

[72C203503ONTHETREE]

Mopar offers a fuel injection set up for the Jeep six, I bet you could fab up some stuff to make it work ok, it uses a TBI type set up. Holley makes a TBI set up also but dont know if you can set it up for a six cylinder.

[Russell]

I'd personally go with the Cliff 4 barrel intake, then use a 4 barrel to TBI adapter. Shouldn't take much to make it run using a 4.3 TBI setup, but expect to spend a fair bit of time doing tuning to get it perfect, don't expect to drop it on and have a perfectly running engine right off the bat.

[Captkaos]

I agree, the TBI would be the simplest route and a config from a 4.3L as Russel suggeste would be the perfect donor since the 250 is relatively close to the displacement.

If you are wanting port injection you may look at this, keeping in mind it will be expensive. (anything other than TBI will cost you about $2000).
http://www.sissellsautomotive.com/fuelinjection.html

[ElGracho]

Figure out the intake hardware first. Two or four barrel with a TBI adapter would be easiest and least expensive. Intake modified for port injection would be next (using a similar size engine throttle body adapted to the carb flange, GM 3800 is really common and might work). Most expensive would be the clifford/weber stuff.

I'd use a fuel tank from an 87 with an in-tank pump. Either a 87 truck pump and sender for TBI or the 87 truck sender with an 89 Camaro TPI pump for port injection.

For electronics, I'd use Megasquirt. It's specifically made to add fuel injection where it didn't originally exist or even improving on factory stuff. Look here:
www.msefi.com