'94 300 fuel pressure regulator

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'94 300 fuel pressure regulator

Postby Lupin398 » Wed Jul 21, 2010 11:32 pm

I heard ford changed Fuel pressure Regulator designs, would anyone know if the new ones would be the new design?
I got a BWD replacement since everything else is wearing out, and my truck is showing the same symptoms as a propane forklift and it's propane regulator was on it's last leg
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Re: '94 300 fuel pressure regulator

Postby StrangeRanger » Thu Jul 22, 2010 6:19 am

AFAIK the regulators for the 300 are all the same design. On late model engines Ford has indeed changed the design but it is not compatible with the older fuel systems.

Our regulators are a pilot operated backpressure valve, a type of pressure relief valve which is placed in the circuit after the injectors and maintains a constant pressure on the upstream side of the valve.

The newer systems use a pressure reducing valve which is placed in the circuit before the injectors and maintains a constant pressure downstream of the valve
1996 F-150 (tow missile)
1993 Mustang 5.0 (hot rod and auto-x monster)
1982 Tiga Formula Ford (SCCA racecar)
2013 Hyundai Elantra Coupe (daily driver)
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Re: '94 300 fuel pressure regulator

Postby Lupin398 » Thu Jul 22, 2010 12:25 pm

Ahwell, for $50 I have peace of mind that it's new and functioning. Also seems to have taken care of the occasional truck wanting to stall when revving sharply, here's to hoping it fixes the occasional stall and the 1 in 5 times stalling when going into reverse after warm-up.
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Re: '94 300 fuel pressure regulator

Postby Emerald 74 4X4 » Fri Jul 23, 2010 8:24 pm

There is a 2 volt and a 3 bolt regulator. I can't remember which year they changed from or to another. I think I got my EFI manifold setup off an 88 or 89 and my regulator is a 2 bolt.

If you look up a regulator for an 87 compared to a 96 and you can see a picture, you might be able to narrow down the year that it changed.
1974 Ford F-250, Turbocharged and Intercooled 300, Megasquirt Fuel Injection and Ignition control, EDIS, 7.8:1 compression, Harland Sharp roller rockers, Crane 284/272 cam, mild port/polish carb head - 194/1.60 valves, EFI manifolds into turbo - 3.5 inch to muffler - dual 3 inch out the back.
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Re: '94 300 fuel pressure regulator

Postby StrangeRanger » Fri Jul 23, 2010 8:30 pm

96 is a 2 bolt.
Regardless of whether it's a 2 or 3 bolt mounting flange, it's the same basic design for all of them. IIRC the design change from backpressure valve to reducing valve happened sometime around 97 or 98
1996 F-150 (tow missile)
1993 Mustang 5.0 (hot rod and auto-x monster)
1982 Tiga Formula Ford (SCCA racecar)
2013 Hyundai Elantra Coupe (daily driver)
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Re: '94 300 fuel pressure regulator

Postby Emerald 74 4X4 » Sat Jul 24, 2010 3:50 am

Yeah, with the introduction of the Triton engines.

96 huh? Maybe I got the manifolds from someone who didn't know what they came from. I. Any case, one nice thing about the 2 bolt design is that you can easily modify an aftermarket regulator for like a 3.8 to bolt on without any ugly or cumbersome adaptations.
1974 Ford F-250, Turbocharged and Intercooled 300, Megasquirt Fuel Injection and Ignition control, EDIS, 7.8:1 compression, Harland Sharp roller rockers, Crane 284/272 cam, mild port/polish carb head - 194/1.60 valves, EFI manifolds into turbo - 3.5 inch to muffler - dual 3 inch out the back.
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