injectors

[morgan]

My 73 2.0L car has a 1.8L case (with god knows what inside, a 286 degree cam for sure) with dual weber 40 idf carbs. Its got some kick so i think it might have 2.0L crank and pistons (there is no easy way to tell is there?).
Now, what I am planning to do is to get stock 914 fuel injection stuff (intake runners,air distributor, throttle body and maybe a 914 fuel pump) from a wreckers and then buy a haltech E6S to do all the thinking and sencing.
What I'm wondering about is the fuel injectors. Does anyone know how much power the various 914 injectors are good for. I found the following table
http://www.wolfems.com.au/injector_flow_rates.htm

that claims the Bosch 0 280 150 009 (914 1.7) injectors are good for 53 hp each at 300 kpa. Can this be correct? if this is true it would save me some monkeying around trying to find higher power injectors to fit the intake manifolds for future upgrades.

Any advice on this that anyone could offer would be very greatly appreciated. thanks.
Morgan
brghtyellowmatrix@yahoo.com

[morgan]

Sorry
that email is brightyellowmatrix@yahoo.com

[Dave at Pelican Parts]

I had some 2.0 (green; 0 280 150 019) injectors cleaned and flow tested a couple of months ago. The static flow test came up with Lb/Hr numbers ranging from 42.24 to 45.66, with the majority being 44.52, at 40 PSI.

According to the calcluations used in that table, the 2.0 injectors should be good for over 90 HP each! I sincerely doubt that. The numbers they use look like they assume that the injector is fully open all the time. That won't happen in most FI systems. The injectors require time to open and close--and there is a maximum "duty cycle" (% of the time the injector is open).

I have heard stories of 1.7 injectors being used on 2.0 motors and people running into fuel starvation problems at high RPMs and loads. To me, that says that the 1.7 injectors are pretty marginal for a 1971cc motor putting out ~100 HP. I would probably go with the 2.0 injectors.

Note that the test of my injectors was at 40 PSI, and stockm D-jet pressure is ~29 PSI. I'm not certain what 300 Kpa is in terms of pressure, but it sounds like it might be 3 atmospheres--~43 PSI. I think I'd worry about leaks a lot more if I ran my fuel system at that kind of pressure.

--DD

[morgan]

Thanks Dave
That is exactly the kind of info I was looking for. 2.0L injectors it will be. So, those will fit the 1.7 or 1.8 intake manifolds right? That's another thing I have been meaning to ask someone. How do the intake manifolds, throttle bodies and air distributors from the various engines compare in size?
thanks again