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Hello. I'm looking to possibly run a Holley 12-1800 E85 compatible fuel pump on the street, but I'm concerned about the written warning about running past 20 minutes or over 90°F. If I could get a running time of 45 minutes then the pump would be perfect. So my question is would this pump stand up to longer running periods, if I ran a digital relay and duty cycled the primary pump down to say 40% duty? The idea would be to duty cycle the primary up to about 40% throttle and past 60% throttle, activate the secondary pump. I'm currently running a 12-1200 pump, so a direct drop-in would be ideal. This is all controlled by Dominator EFI.
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The Holley 12-1800 fuel pump is not capable of circulating "hot fuel" in street driven applications. Read more about it here:
http://documents.holley.com/flyer_ho...el_systems.pdf (Holley EFI Fuel Pump & Filter Catalog - Page 2 & 3)
http://documents.holley.com/holleyfu...ems_chart1.pdf (Holley Fuel System Selection Chart)
The newer Holley "hot fuel" capable (pump gasoline/street driven) fuel pumps are Walbro (internally).
The race gas, diesel & E85 only fuel pumps are Delphi (internally). Their newest brushless fuel pumps are made by TI Automotive.May God's grace bless you in the Lord Jesus Christ.
'92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, Eagle 3.470" forged steel crankshaft & H-beam rods, Wiseco 4.200" forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232°-244° duration/.623" lift/114° LSA H/R camshaft, Trick Flow R-Series FTI Comp Ported intake, BBK 80mm throttle body, Holley Dominator MPFI & DIS, Holley 36-1 crank trigger, MSD 1x cam sync, PA PMGR starter, PA 200A 3G alternator, Optima 34/78 Red battery, 100HP progressive dry direct-port NOS, R134a A/C, Spal Dual 12" HP 3168 CFM fans, Frostbite 3-core aluminum radiator, Pypes SS dual 2.5" exhaust, SS off-road X-pipe, SS shorty headers, OEM smog pump converted vacuum pump, Earl's -6AN fuel system plumbing, Walbro 255 LPH in-tank pump & Pro-M -6AN hanger, S&W subframe connectors, BMR upper & lower torque box reinforcements, highly modified Ford 4R70W transmission, FTI 9.5"/3000 stall/triple disc TCC, B&M Hammer shifter, Stifflers trans crossmember & driveshaft safety loop, FPP aluminum driveshaft, FPP 3.73 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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