I am trying to buy a set of "Brown Top" fuel injectors, which are supposed to have come from a 1985 SVO 2.3 L Turbo. They (obviously) have a brown colored top section and a pintle. I can't see any part number on them. The replacements I've seen like the Python 649319, don't look exactly the same.

Does any one know what the specs on the original injectors were? Low impedance, High Impedance, flow, PSI, connector type?

1 Answer 1


Here is an image with the different types of injectors. It looks as though the brown top injectors you are talking about are 36 lb injectors, meaning they can flow 36 lbs of fuel per hour at the stock fuel pressure. I don't know what the fuel pressure these were rated at for 36#'s, but if you have lower or higher fuel pressure in your vehicle, this will directly affect the amount of fuel which the injectors will allow for a given amount of time. (I am not sure, but believe Ford runs their fuel system at 30psi, someone correct me and I'll update if I'm wrong.) According the picture, these came stock in the 94-95 T-Bird Super Coupe. Note the red ones right next to them are good for 30#'s.

enter image description here

As far as low and high impedance, I found this blip here:

How do I know if my injector is low impedance or high impedance?

You can measure the resistance across the two electrical terminals of the injector. If the resistance is between 1.5 and 4.0 Ohm you have low impedance injectors. If the resistance is between 8 and 16 Ohm you have high impedance injectors.

  • That is helpful information. I'll try to post a picture of the ones I'm trying to replace. Based in part on this info, ordered UREMCO remanufactured injectors. Commented Jul 3, 2014 at 16:50

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .