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Thread: Fuel Pressure Regulator

  1. #1
    Join Date
    Jun 2013
    Location
    Calgary, Alberta
    Posts
    112

    Unhappy Fuel Pressure Regulator

    After waiting a month for my Terminator fuel kit to arrive (it still has not) I'm tired of the back order routine and I'm going to the local speed shop to buy the regulator & hoses, etc. I was reading the instructions which show the EFI requiring 21 PSI. The Holley 12-846 advertises as between 40-70 psi on the website and several vendors. This is confusing. Is it 15-65 psi as the instructions state or 40-70 psi as posted elsewhere? I would really like to get this thing up and running before summer disappears. And if the 12-846 is not available, which others will work? There don't appear to be many that adjust as low as 15 PSI.

  2. #2
    Join Date
    Dec 2009
    Location
    Connecticut
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    Quote Originally Posted by 442SCOTTY View Post
    I was reading the instructions which show the EFI requiring 21 PSI.
    The Terminator EFI runs at 43 psi fuel pressure. Where did you read "21 psi"?
    http://www.holley.com/data/Products/...R10653rev1.pdf (Terminator EFI manual - Read page 29.)
    Fuel system plumbing diagram - figure 4, page 8 in the manual. Any MPFI type regulator can be used.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  3. #3
    Join Date
    Jun 2013
    Location
    Calgary, Alberta
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    In the Holley fuel pressure regulator instructions: "If you plan to install a fuel pressure gauge, do so at this time. TBI systems are designed for an operating pressure of 21 PSI. Although this is factory pre-set, it is ideal that it be checked."

    And good morning by the way

  4. #4
    Join Date
    Jun 2013
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    Calgary, Alberta
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    Thanks for the info...I should read a little more. My bad.

  5. #5
    Join Date
    Dec 2009
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    Quote Originally Posted by 442SCOTTY View Post
    In the Holley fuel pressure regulator instructions: "If you plan to install a fuel pressure gauge, do so at this time. TBI systems are designed for an operating pressure of 21PSI. Although this is factory pre-set, it is ideal that it be checked."
    That's not the fuel pressure for the Terminator EFI!
    Terminator is 43 psi; all other TBI systems run at 21 psi.

    Also, those aren't the fuel system instructions for the Terminator EFI.
    http://www.holley.com/data/Products/...R10655rev1.pdf (Terminator EFI Fuel System Kit)
    http://www.holley.com/data/Products/...9R10657rev.pdf (Terminator EFI Fuel System Kit)

    Thanks for the info...I should read a little more. My bad.
    EDIT: You & I were typing/posting at the same time.
    Since you're still waiting for parts, please take the time to read the entire Terminator EFI manual.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

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