Anyone know where I could get the Injector plugs and clips for Ford Injectors??? Or how do I go about hooking them up . I am running my SAFC 2 and Walbro 255 and the LT1 Adjustable Regulator , Reflashed PCM and GM 2 Bar. I just need to know what would be the best way to hook these bad boys up??? Please help. I am retarded when it comes to wiring and such. Thankyou Very Much for any input thats possitive.
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copuld goto a junk yard and get some off a ford that uses 30lb ...i beleive there the same clip for yours...i think they put those in thunderbirds mustangs and maybe some others im not 100% sure tho...
i picked up a set of those for $159 from "cfmperf" on ebay. havn't got them on the car yet tho, i havn't got around to looking for clips yet, doh another thing to go on my need to do list lol
there's another guy on ebay who sells ford injectors and i've emailed him looking for clips. he says he sells them for $5 a piece. i dont know if that means with the purchase of injectors or $5 a piece on their own. his website is www.sprayitracing.com. send him an email i'm sure he could help you out.
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450WHP Turbo Ecotec swap in the works...
But they're not 42 lbs/hr injectors.
Ford rates their injectors at a higher fuel pressure... around 45 psi. So you need to calculate the "equivalent flow" to a GM injector rated at 35 psi.
So 42 lbs/ hr times the square root of (35 divided by 45) = 37 lbs/hr.
and Ford thirty pound injectors are really about 26.5 lbs /hr.
Also, I have a book here with "Standard Motor Products" electrical repair harnesses. They show a repair pigtail for Ford injectors, part number S-824, fits 1999-04 vehicles with oval injector connector. If you have an auto parts store nearby you might call them and see if they can get this part, or check something like Advance Auto's web site to see if you can get a picture of it.
Good luck.
-->Slow
43psi is the industry standard for injector measuring. They are 42lb/hr injectors, just GM measures them in a different way, so you don't have to convert it to see what it "actually is" because it really is what its rated at.
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Shifted wrote:43psi is the industry standard for injector measuring. They are 42lb/hr injectors, just GM measures them in a different way, so you don't have to convert it to see what it "actually is" because it really is what its rated at.
Yep.... just because Ford or Dodge run a higher fuel pressure, doesnt mean the injectors are "Rated" at that pressure......
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Quote:
43psi is the industry standard for injector measuring. They are 42lb/hr injectors, just GM measures them in a different way, so you don't have to convert it to see what it "actually is" because it really is what its rated at
I don't think I'm being too picky about this, but I said "equivalent flow," indicating a way to compare apples and apples. GM doesn't measure their injectors in a different way. GM uses a different fuel pressure, which changes the amount of fuel delivered for a given injector on time. The measurement is the same... open the injector for a fixed amount of time and measure the volume of fuel that is delivered.
You absolutely need to know the flow rating of the injector at the fuel pressure that you will be running before you can decide whether or not that particular injector is a good choice.
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Yep.... just because Ford or Dodge run a higher fuel pressure, doesnt mean the injectors are "Rated" at that pressure......
Ford injectors
are rated at a different pressure. I've double checked numbers, since I was trying to go from memory during my short lunch break. I was backward. The Ford injectors are rated at the lower pressure. GM injectors are flow rated at 43.5 psi fuel pressure while Ford injectors are rated at 39 psi.
So a 43 lb/hr injector @ 39 psi is equivalent to a 45 lb/hr injector @ 43.5 psi, and a 30 lb injector @ 39psi is equivalent to a 32 lb/hr injector @ 43.5 psi.
It becomes much more important to do these conversions when you start working inside efi calibrations. When changing injectors, you generally have the ability to tell the ecm what the flow rate of the injector is, so it can correctly calculate an injector on time to deliver the desired air/fuel ratio. If you use the wrong value, you can really increase the amount of time and effort used to tune the vehicle.
-->Slow
Point I'm making is this:
Most of us (if not all) who use bigger injectors use something to bring the fuel pressure down, aka, AFPR. The only time the "equivalent fuel pressure" would come into play would be trying to figure out what the new idle pressure would have to be to keep the same flow rate at idle. Since we have a factory FPR, you can only assume that the idle pressure is lower than WOT pressure, which is like 45ish PSI. So if you knew what the idle pressure was, what the rated pressure and rated flow of the stock injectors is, then you can figure out exactly what pressure you need for the new injectors to provide an equivalent amount of fuel at idle.
Since we can't change the stock PCM's pulsewidths (yet)
, then we are stuck using primarily fuel pressure as a tuning device, where the equivalent pressure becomes negated for pressure needed to support X amount of HP. Doesn't really matter what the stock injector flowed at 50 PSI if you are making twice the HP of the stock engine.
Just suffice it to say that green tops are in fact 42lb/hr thier rated flow, and dictated by actual fuel pressure.
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ok so from what i have taken from this. and what i have obviously not understood. 42lb/hr green tops are about 370 cc equivalent GM size injectors.
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Now the fact Since we can't change the stock PCM's pulsewidths (yet) then we are stuck using primarily fuel pressure as a tuning device
< this assumption I have come to . I am primarily relying on the reflahed pcm to compensate for timing. and my safc to tweek the larger injectors @ base pressure and throughout the rpm range. If they are in fact 370cc's they should fill in the gap I am looking for with STILL a stock bottom end. 11psi with good A/F on my super 60. On my auto trans I hope to hit mid 13's But We will see. All the bugs should be worked out in time for the bash guys. See you there and thankyou all for the very very informative posts you have made
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