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Thread: 12-1800 max fuel pressure at 13.8V? And flow at that max pressure?

  1. #1
    Join Date
    Nov 2013
    Chicago IL

    Default 12-1800 max fuel pressure at 13.8V? And flow at that max pressure?

    I know the Instructions say it flows 140 @ 60 psi...

    I would like to know the maximum pressure and the flow at that pressure. I will be around 13.8V

    Doing a supercharger, expecting to make 20 psi of boost, and would like to start at a base of 58 psi...meaning I would see 78 -80 psi when I hit 20 psi of boost.

  2. #2
    Join Date
    Dec 2009


    The advertisement now states,
    "For hardcore race vehicles, both pumps can be wired for full time duty to get maximum
    performance and are proven with 18.5 volt compatibility at pressures up to 80 psi." (Holley Dominator Billet Fuel Pump) (Interesting Forum Post - Pump Disassembled Pictures) (Interesting Product - Dual Port End Housing)

    However, the maximum recommended pressure for Holley's 160 lb/hr injectors is 75 psi: (Holley EFI Injector Flow & Off Time Data)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS T/W 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 12:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 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, -6AN fuel system plumbing, Walbro 255 LPH pump, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 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 M/T Street Comp tires.

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