Re: [AMC-List] Fuel Injecting the big dogs

["Swygert, Francis G MSgt 436 CES/CECM" <Francis.Swygert3@xxxxxxxxxxxx>]

Hmmm... just use a 1V (2.5L four) computer setup from a GM, substitute
the YF for the stock TB. The GM 2.5L TB flows more than a YF though. At
least the butterfly is a lot bigger. Just based on the butterfly size
the GM 2.5L TB flows more than a Carter WCD 2V carb. The GM TB is
something like 2.25" in diameter IIRC. It's been a long time since I
toyed with the idea of using one on an AMC engine. It would work well on
a bored out 1V intake and give a little more power than a BBD 2V -- but
the main gain would be driveability. A long six really needs injectors
at each port. 

Someone (Jim?) mentioned figuring out how to inject a 196. The 1V TBI
would work great, but the side of the intake "trough" could be directly
drilled and tapped for injectors. If the computer wouldn't object only
four would be needed since cylinders 2-3 and 4-5 have siamesed intake
ports. I wonder if one could just connect two sets of wires to one
injector (with diodes to prevent feedback)? Those two injectors would
get a lot more use than the other pair, but shouldn't be a problem. With
a batch fire system it should work, sequential would depend on how close
the siamesed injector cylinders are in the firing order. Of course two
injectors could be installed side by side. This would work for the
L-head too. Now that would be something -- a port injected flat-head
six!! 

There are Stromberg carb body based TBs out there now. One of the hot
rod supply companies made them for two and three deuce setups on
flat-head Ford V-8s. 


----------------------
Tom wrote:
I did calcs and drawings for a "FI Carter YF" (up to 250HP).
Can do it with a single injector, in a modified YF.  I think I
know how to measure air flow and engine demand w/two pressure
sensors (need to proof that) in a hacked up YF. No need for
recirculating fuel or even tightly regulated fuel pressure --
simply adjust pulse width with instantaneous pressure ("area
under the curve"). Idle air is in a YF already... simple
thermistor for carb temp (good enough for the carburetor, close
enough to coolant :-) Everything but the fuel boost pump could
fit inside the carburetor body -- electronics too!  With feedback
(wide-band O2) I could make it primitively learn.

To proof it I'd need a "flow bench" air pump and flow meter
to characterize my flow/demand measurement with two pressure
sensors. If that works I know I could make it go. Closed-loop
software servo systems I can do.

Too many possible projects in the world though.

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