LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Need some help with Ford #42 injectors.

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Old 02-01-2006, 10:25 PM
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Need some help with Ford #42 injectors.

I have the Ford #42 injectors, part # M-9593-F302 So the guy who will program my PCM, he wants to know what pressure the injectors rated at.? Because he says," the flow rating by
itself is not enough..." If anyone knows it, please let me know. Thanks.
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Old 02-01-2006, 10:35 PM
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Re: Need some help with Ford #42 injectors.

Originally Posted by desertfox
I have the Ford #42 injectors, part # M-9593-F302 So the guy who will program my PCM, he wants to know what pressure the injectors rated at.? Because he says," the flow rating by
itself is not enough..." If anyone knows it, please let me know. Thanks.
It is 40.0psi
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Old 02-01-2006, 10:46 PM
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Re: Need some help with Ford #42 injectors.

Thanks.
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Old 02-01-2006, 11:20 PM
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Re: Need some help with Ford #42 injectors.

From my experience, a lot of the Ford injectors are rated at 2.7bar (39.15psi). When running at 3bar (43.5psi), they will flow 5.4% more than they are rated to flow at 39.15psi.
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Old 02-02-2006, 09:55 AM
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Re: Need some help with Ford #42 injectors.

Uhh. now I have two informations. So what pressure rate should I give him, 40.0 psi, or 39.15 psi ?
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Old 02-02-2006, 04:25 PM
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Re: Need some help with Ford #42 injectors.

they are 39, but either 39 or 40 wont make much of a difference..
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