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Discussion Starter #1
So I forgot which one drops into the first gen escort GT fuel rail. I think it is the 86-93 mustang 5.0. Is this correct?

Think this is on the list next week...
 

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Discussion Starter #4
1lowscort said:
This is correct. Are you going to replace it with a stock 5.0 unit or an aftermarket adjustable deal?
I think I'm gonna go with an aftermarket setup. I just bought 4 new 24# injectors so while I'm tooling around I thought might as well get the most out of the new injectors.

I think that 35-45 psi is correct for stock. If that is so I'll set it on 45, I guess. :)
 

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Discussion Starter #5
So I've been lookin' at the Haynes and Ford manuals, the haynes say the EFI stock fule pressure is 39 PSI. I for the life of me could not find the info in the Ford shop manual. Did find out that Aeromotive recommend setting the static pressure (no vacuum) at 5 psi over OEM.

So that would be 44 PSI. What you guys think?
 

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I found this in my 1988 Ford Specification Book

1.9 CFI & EFI
Delivery Pressure 35 - 45 psi
Working Pressure 39 psi
Pressure Immediately After De-Energization 30 psi
Overpressure 123 psi
Fuel Flow @ working pressure 21.1 gal/hr

I also have these numbers in kPa if your interested.
 

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Discussion Starter #7
Thanks old86EXP, That is helpful info.
 

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The CFI does not run at that high of pressure... the EFI-HO setup does. The CFI runs 14.7, or atmosphere, pressure. If it was run with 45 psi, the thing would pump waaay too much gas into the engine.
 

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UnexplodedCow said:
The CFI does not run at that high of pressure... the EFI-HO setup does. The CFI runs 14.7, or atmosphere, pressure. If it was run with 45 psi, the thing would pump waaay too much gas into the engine.
You might be right I noticed that my book covers all front wheel drive Ford cars for that year (88). I just looked under EFI/CFI and typed away. That shoud be only EFI.
 

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I know I'm right ;)...had this discussion before with multiple auto stores since they can't find my fuel regulator in the books. The carb models ran at 6-8 psi via mechanical fuel pump, :p. Escorts stayed more around the 30 psi area from what i've seen. If you want a little higher pressure pump, grab an EFI Tempo one, as it's good for running a solid 45, and goes up to 60 I believe. I know my fuel pressures :p
 

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Discussion Starter #11
So I bought the Aeromotive fuel regulator, and it would fit the fuel rail but will not fit in the gap/space in the intake manifold. the Holly and Manley looks like they may fit. The Holly looks more OEM.

Can anyone help me with this as to what adjustable regulator will fit in the gap in the EGT intake and work?
 

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Discussion Starter #13
UnexplodedCow said:
There's nothing to see here. :)
I went out with my camera and the batteries were dead.

Basically it is half an inch too long, to fit over cylinder three intake down pipe. If the fuel regulator was between cylinder two and three it would be perfect with no problem.
 

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I was in the parts store yesterday picking up some RP (Royal Purple) and notice the BBK regulator. It looks only a bit taller than the stock one. I wonder if BBK has drawings somewhere online.
 

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Discussion Starter #15
Good news, so the Mallory regulator fits perfect with none of the size issues of the Aeromotive. It drops right in between the pipes you can adjust it with not too much trouble.

 

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ok guys the holley part no.is 512-500-1 and it fits with no problem in stock location.
 

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so has anyone tried the holley fuel pressure guage that screws right onto the shraider valve of the fuel rail?
 
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