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DIY Adjustable FPR (AFPR)
#1

If you feel the need for an AFPR, there's a cheap ($5?) alternative to the more expensive aftermarket options. Namely, a J/Y-available (and seemingly-plentiful) Bosch adjustable FPR from the CFI throttle body of a mid-80's 5.0 Ford, Lincoln, Mercury, etc.. They look exactly the same as the Bosch regulator on "our" 2.3T and will directly interchange.....but they don't have the boost-referencing hose nipple on top.

HERE'S  what the TB looks like (ignore braided hoses). See that black-ish hole at the top? There's a small forcing screw in there that accepts a 5mm Allen wrench for pressure adjustment (some have a tiny sheetmetal cover that needs to be popped off for access). There's a hole at the bottom of the Allen-screw that's open to the upper diaphragm chamber for referencing ambient air pressure.

Sooooo.......how do you reference it for boost? Remove the adjustment screw, solder a short length of steel brake tubing into the Allen recess and either solder a small nut around the tube,  as shown below ~ OR, .easier yet.....just cut a screwdriver slot at the top of the tube.

BTW - see the two f/injectors in that TB? Depending on the application, they're either 46's or 52's and are direct-replacements for our smaller 30 or 35pph 2.3T injectors. Wanna "flat rate" the harvesting of those injectors? Take a BFH (big hammer) along and break off the hollow "bridge" that fuels the top of the inj's......you can then pull 'em straight out.

Also, the FPR retaining screws go in from the bottom and you don't wanna have to remove the whole TB for access, do you? A sharp downward "whack" on the back of that air horn using a drift punch or chunk of wood with your BFH will snap it right off.......yielding easy access to those screws.  [Image: happy0034.gif]

[Image: TGOb1k6.jpg?1]
Placerville, California
(former)  '78 2.3T Courier w/blow-thru Autolite 2bbl carb ~ (current)  '87 2.3T Ranger w/PiMP’d EFI
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#2

I guess my links don't work. But i figured you of all folks would of caught this ray. Wink

http://forum.turboford.org/cgi-bin/ultim...270#000000
Josh
1991 Ford Ranger 2.3 Turbo
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#3

Dang links need updated. lol

http://turbolx.150m.com/The-fuel-regulator.htm
Josh
1991 Ford Ranger 2.3 Turbo
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#4

Thanks for posting.

I have 2 of those cfi t-bodies lying around so I'll check them out.
Alan Mackin
4 Fox T-birds plus:'86 TC NHRA/IHRA Stocker/Super Stocker and 2009 Mustang GT NHRA Stocker
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#5

BUMP   Smile
Placerville, California
(former)  '78 2.3T Courier w/blow-thru Autolite 2bbl carb ~ (current)  '87 2.3T Ranger w/PiMP’d EFI
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