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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

stock injectors?

  • Thread starter Thread starter GeTCrAzYKiD
  • Start date Start date Dec 4, 2009
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GeTCrAzYKiD

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Jan 8, 2006
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Dec 4, 2009
#1
  • Dec 4, 2009
  • #1
I'm curious what impedence the factory injectors are on the fox 5.0's. And are they any different from the motors pre 89? I think thats when they started the MAF's. I'm pretty fresh to these and I'm debating on a turbo fox project. I hear I can use the injectors that are on the FC3S Rx-7's (86-91) they range from 460cc and 550cc (about 42lbs ish to 52lbs ish I think). Depending on what year, the rx-7's run low impedence and high impedence for both sizes.

I tried a search and I'm reading plenty on the injectors and what people are doing to use both but not really an answer on what I'm asking, whats factory?
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
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Dec 4, 2009
#2
  • Dec 4, 2009
  • #2
Factory is high impedance. As far as i know, only the 2.3L turbo Mustangs/thrunderbird used low impedance injectors

If you measure resistance of the injector, it's approx. 14.4 Ohms across the terminals
 
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GeTCrAzYKiD

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Jan 8, 2006
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Dec 6, 2009
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  • Dec 6, 2009
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Awsome thanks for the info..Thats for even the fox's pre MAF also?
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,184
17,887
224
Massachusetts
Dec 6, 2009
#4
  • Dec 6, 2009
  • #4
GeTCrAzYKiD said:
Awsome thanks for the info..Thats for even the fox's pre MAF also?
Click to expand...


Correct, the 86-88 Speed Density 5.0's used the same exact injectors as the 89+ MAF cars.
 
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