255lph pump to big??

Lethal5Oh · 03-06-2004, 09:29 PM

Would a 255lph fuel pump be to big for my current combo? Im in need of a new pump and i got a line on one for real cheap. In the near future i plan on hollowing out the cats, and putting on a bigger TB and 1.7 rrs. I do have an AFPR already.

stang_racer20 · 03-06-2004, 09:34 PM

I would have to say yeah, its overkill for your combo but that doesnt really matter. Just keep the pressure low enough and you should be fine. All that 255lph means is thats what it is capable of flowing should your engine demand it.

LX5liter · 03-07-2004, 09:56 AM

I agree with stang_racer. Put in the 255. It will be there to grow with your mods.

sedanman · 03-07-2004, 11:11 AM

I triple that resonse, no such thing as to much pump with a return style fuel system (like mustangs have up to 99). I had a 255lph in my car when I had your level of mods and it grew with me for years.

Lethal5Oh · 03-07-2004, 01:35 PM

Thanks for all the replies. I think ill have to go with the 255, cant pass it up for the price.

84LX89GT · 03-11-2004, 02:34 AM

Be careful with the 255 lph fuel pump. I had one in my '89 GT for about a week before i removed it. The return line back to the tank was a restriction and caused it to run at 85 psi, i checked - no kinks in lines, no obstructions and not plugged in tank, the fuel pressure regulator was fine, i put back in the 110 lph and it ran back at 40 psi (initially 30 psi because i tried to cut back on the 255 lph pump). It may for some reason just happened to me

but the car ran fine after removing the 255lph pump. The 1/4" return line is fairly small going back to the tank, you may be wasting your money.
You car may run fine, but mine didn't.

GhOsT6_9 · 03-11-2004, 05:46 PM

I just installed the BBK 255lph pump on my car. Everything works great, used all stock fuel lines. No probs with fuel pressure, holds right at 41psi (adjustable reg).

sedanman · 03-12-2004, 09:36 PM

84LX89GT, that is strange I have never heard of that before. I would guess something was wrong with the pump. There should be no way that the return line was your restriction.

84LX89GT · 03-15-2004, 06:57 PM

I disconnected the line at the fuel pump return for the return line, still 85 psi, i inspected the lines for kinks and couldn't see any, i disconnected the return line at the fuel pressure regulator and ran a hose to a tank of gas and fuel pressure dropped back down to 31 psi (after trying to lower pressure with it running at 85psi). I've heard of quite a few people running those pumps without problems, but as soon as i installed it the fuel pressure wouldn't come down and as soon as i put the old one in it ran fine. I didn't change anything else like the fuel pressure regulator, lines or pickup. Maybe there was a spot of rust in the line or a kink i didn't see, but that was just my experience with that pump. Who knows

sedanman · 03-16-2004, 05:56 PM

Yeah I would say you have some restriction in the line.

BigCountryGT · 03-16-2004, 11:05 PM

I put the 190 in my car, but the return line was screwed up in the process and it costs $87.00. I am planing on replacing it with fuel inj. quality rubber fuel line and hose clamps.

Is this a safety hazard?

sedanman · 03-17-2004, 07:06 PM

According to NHRA rules you can only have 12" of rubber hose.

Lethal5Oh · 04-04-2004, 02:38 PM

Just to update. I put in the 255 lph fuel pump and the pressure is great. with the AFPR i set it at 39 psi. Thanks again to everyone for the advice.

sedanman · 04-05-2004, 07:15 PM

Quote:

Originally posted by BigCountryGT
I put the 190 in my car, but the return line was screwed up in the process and it costs $87.00. I am planing on replacing it with fuel inj. quality rubber fuel line and hose clamps.

Is this a safety hazard?

I have the stock line and I have no use for it since I am putting a fuel system in the car for $10 bucks shipped you can have it.

BigCountryGT · 04-06-2004, 07:49 AM

Quote:

I have the stock line and I have no use for it since I am putting a fuel system in the car for $10 bucks shipped you can have it.

Thanks; A week ago I would have jumped on it, but I have it fixed and working fine.

Thanks again.

sedanman · 04-06-2004, 11:32 PM

Cool just thought I would offer it.

03-06-2004, 09:29 PM	#1
Lethal5Oh Registered Member Join Date: Jun 2002 Location: Portage Posts: 239	255lph pump to big?? Would a 255lph fuel pump be to big for my current combo? Im in need of a new pump and i got a line on one for real cheap. In the near future i plan on hollowing out the cats, and putting on a bigger TB and 1.7 rrs. I do have an AFPR already. __________________ '95 GT convert. K&N, C&L mass air meter, Performance distributors sreamin demon coil, dyna mod, live wires, king cobra clutch, flowmaster american thunder exhaust, UPR billet adjustable shift handle, Crane Cams Fireball HI-6 box,underdrive pullies, 255lph fuel pump, UPr short throw shifter, caster camber plates, 03 cobra lower A arms, bullit suspension, cobra front brakes

03-06-2004, 09:34 PM	#2
stang_racer20 Registered Member Join Date: Jun 2003 Location: Wisconsin Posts: 348	I would have to say yeah, its overkill for your combo but that doesnt really matter. Just keep the pressure low enough and you should be fine. All that 255lph means is thats what it is capable of flowing should your engine demand it. __________________ 92 Mustang GT, 347 Stroker(Forged Steel Crank/Rods-Balanced, Forged Aluminum Dished Pistons), Trick Flow Track Heat Intake, Trick Flow Twisted Wedge Heads w/ Stage 3 port/polish, 80mm C&L MAF, FMS 30# Inj., BBK AFPR, Trick Flow Stage 2 Cam, Trick Flow 1.6R Rockers, BBK E.L. Headers, Flowmaster Cat-Back, MAC CAI, FMS Pulleys, Griffin Alum. Radiator, MSD Pro-Billet Distributor; AOD, Dynamic 3300 Lockup Converter, B & M Super Cooler, B&M Ratchet Shifter; 3:73 gears.

03-07-2004, 09:56 AM	#3
LX5liter dude5l Join Date: May 2001 Location: Grande Prairie, Alberta, Canada Posts: 603	I agree with stang_racer. Put in the 255. It will be there to grow with your mods. __________________ Good luck! Brad R. 1992 L.X. 5.0 coupe MODS: A few little bolt ons New Best time ...11.60 @ 128 mph @ 2000+ ft altitude. Rice Haters Club member #39 Users rides #2542

03-07-2004, 11:11 AM	#4
sedanman Registered Member Join Date: Feb 1999 Location: Indianapolis, IN Posts: 963	I triple that resonse, no such thing as to much pump with a return style fuel system (like mustangs have up to 99). I had a 255lph in my car when I had your level of mods and it grew with me for years. __________________ 04 Screamin Yellow Cobra KB 2.4 (585/556 pump 626/666 race) 00R brakes, DFX clutch, Level 5's, return fuel system, Lts with 3" exhuast, FR500 wheels and all the other fun stuff. GONE 1991 Lx sedan 5.0, 5spd (Liberty proshifted TKO) S-trim, Ported TF heads everything parted out.

03-07-2004, 01:35 PM	#5
Lethal5Oh Registered Member Join Date: Jun 2002 Location: Portage Posts: 239	Thanks for all the replies. I think ill have to go with the 255, cant pass it up for the price. __________________ '95 GT convert. K&N, C&L mass air meter, Performance distributors sreamin demon coil, dyna mod, live wires, king cobra clutch, flowmaster american thunder exhaust, UPR billet adjustable shift handle, Crane Cams Fireball HI-6 box,underdrive pullies, 255lph fuel pump, UPr short throw shifter, caster camber plates, 03 cobra lower A arms, bullit suspension, cobra front brakes

03-11-2004, 02:34 AM	#6
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	Be careful with the 255 lph fuel pump. I had one in my '89 GT for about a week before i removed it. The return line back to the tank was a restriction and caused it to run at 85 psi, i checked - no kinks in lines, no obstructions and not plugged in tank, the fuel pressure regulator was fine, i put back in the 110 lph and it ran back at 40 psi (initially 30 psi because i tried to cut back on the 255 lph pump). It may for some reason just happened to me but the car ran fine after removing the 255lph pump. The 1/4" return line is fairly small going back to the tank, you may be wasting your money. You car may run fine, but mine didn't. __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)

03-11-2004, 05:46 PM	#7
GhOsT6_9 Registered Member Join Date: May 2000 Location: Ontario,Canada Posts: 233	I just installed the BBK 255lph pump on my car. Everything works great, used all stock fuel lines. No probs with fuel pressure, holds right at 41psi (adjustable reg). __________________ 1989 Mustang LX Notch 5.0L, T-5, 1969 351W heads, cut & welded stock plenum, F-303 cam, Mac 1 5/8 full length headers, Cat'd H-pipe, 3.73 gears, Underdrives, SSM lift bars, E-Fan, 3G Alt, Custom Chip, Autometer gauges, Weld Draglite wheels , M/T ET Street Radials Best 1/4: 13.33@101.53MPH

03-12-2004, 09:36 PM	#8
sedanman Registered Member Join Date: Feb 1999 Location: Indianapolis, IN Posts: 963	84LX89GT, that is strange I have never heard of that before. I would guess something was wrong with the pump. There should be no way that the return line was your restriction.

03-15-2004, 06:57 PM	#9
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	I disconnected the line at the fuel pump return for the return line, still 85 psi, i inspected the lines for kinks and couldn't see any, i disconnected the return line at the fuel pressure regulator and ran a hose to a tank of gas and fuel pressure dropped back down to 31 psi (after trying to lower pressure with it running at 85psi). I've heard of quite a few people running those pumps without problems, but as soon as i installed it the fuel pressure wouldn't come down and as soon as i put the old one in it ran fine. I didn't change anything else like the fuel pressure regulator, lines or pickup. Maybe there was a spot of rust in the line or a kink i didn't see, but that was just my experience with that pump. Who knows __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)

03-16-2004, 05:56 PM	#10
sedanman Registered Member Join Date: Feb 1999 Location: Indianapolis, IN Posts: 963	Yeah I would say you have some restriction in the line.

03-16-2004, 11:05 PM	#11
BigCountryGT Registered Member Join Date: Jul 2003 Location: meridian, ms Posts: 96	I put the 190 in my car, but the return line was screwed up in the process and it costs $87.00. I am planing on replacing it with fuel inj. quality rubber fuel line and hose clamps. Is this a safety hazard? __________________ No, I was serious. Your import sucks

03-17-2004, 07:06 PM	#12
sedanman Registered Member Join Date: Feb 1999 Location: Indianapolis, IN Posts: 963	According to NHRA rules you can only have 12" of rubber hose.

04-04-2004, 02:38 PM	#13
Lethal5Oh Registered Member Join Date: Jun 2002 Location: Portage Posts: 239	Just to update. I put in the 255 lph fuel pump and the pressure is great. with the AFPR i set it at 39 psi. Thanks again to everyone for the advice. __________________ '95 GT convert. K&N, C&L mass air meter, Performance distributors sreamin demon coil, dyna mod, live wires, king cobra clutch, flowmaster american thunder exhaust, UPR billet adjustable shift handle, Crane Cams Fireball HI-6 box,underdrive pullies, 255lph fuel pump, UPr short throw shifter, caster camber plates, 03 cobra lower A arms, bullit suspension, cobra front brakes

04-06-2004, 11:32 PM	#16
sedanman Registered Member Join Date: Feb 1999 Location: Indianapolis, IN Posts: 963	Cool just thought I would offer it.

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