OEM Fuel Pump Limitations
Thread Starter
Instructor
Joined: Aug 2019
Posts: 133
Likes: 9
OEM Fuel Pump Limitations
@ what HP or boost level does the OEM fuel pump start to fall off? or cant keep up?
with a Centrifugal and E85.... since E85 requires more volume.
Even with a BAP...
Is it easier to throw an INLINE in it? I know its a PIA to replace the OEM pump.
what are your real world experiences?
thank you!
with a Centrifugal and E85.... since E85 requires more volume.
Even with a BAP...
Is it easier to throw an INLINE in it? I know its a PIA to replace the OEM pump.
what are your real world experiences?
thank you!
Burning Brakes
Joined: Oct 2005
Posts: 1,057
Likes: 202
From: Michigan
BAP on 93 Pump and I was running out of pressure at 550whp with a heartbeat blower.
now with the ECS stage 1 E85 kit, stock in tank pump and 1050x injectors I’m at 750whp on E and have zero issues.
now with the ECS stage 1 E85 kit, stock in tank pump and 1050x injectors I’m at 750whp on E and have zero issues.
Thread Starter
Instructor
Joined: Aug 2019
Posts: 133
Likes: 9
BAP for the pump? Now I mean with the ECS
Last edited by JSracing; Feb 3, 2021 at 12:25 PM.
Melting Slicks
Joined: Jul 2014
Posts: 2,124
Likes: 202
^What vehicle? From what I understand manual GS cars came with the Z06 pump. They have been known to eclipse 700rw with a BAP on pump gas. Corn all bets are off.
Last edited by JetstreamGS; Feb 4, 2021 at 11:57 AM.
Pro
Joined: Sep 2020
Posts: 537
Likes: 169
From: Ogden, Utah
Melting Slicks
Joined: Jul 2014
Posts: 2,124
Likes: 202
Pro
Joined: Sep 2020
Posts: 537
Likes: 169
From: Ogden, Utah
SBE LS3, ECS 1500 with standard size pulley, BTR LS3 Centri Blower Cam, DW90 injectors, BAP, single port meth injection, full exhaust with hi-flow cats, and well tuned on 91 octane.
I want to make a few changes with the fuel system though. I plan to upgrade my fuel system soon to allow for a future engine transplant, but for now it all works without problems.
I want to make a few changes with the fuel system though. I plan to upgrade my fuel system soon to allow for a future engine transplant, but for now it all works without problems.
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Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
Utah and correction factors, so ignore this really. Fuel pump doesn't care about corrected numbers, only actual.
Burning Brakes
Joined: Oct 2005
Posts: 1,057
Likes: 202
From: Michigan
Pro
Joined: Sep 2020
Posts: 537
Likes: 169
From: Ogden, Utah
With that said I do realize the fuel system is being pushed and will upgrade it soon.
And also I would like to know which states and elevations are excluded from "real world" experiences?
Last edited by D-Dub2013; Feb 4, 2021 at 10:18 PM.
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
The uncorrected numbers are not much different though. Also we tuned to go race 3500 feet lower than here and it made similar numbers on that dyno. So ignore if you want.
With that said I do realize the fuel system is being pushed and will upgrade it soon.
And also I would like to know which states and elevations are excluded from "real world" experiences?
With that said I do realize the fuel system is being pushed and will upgrade it soon.
And also I would like to know which states and elevations are excluded from "real world" experiences?
Doesn't matter what state, but anything 4000+ feet (Utah, Colorado, Wyoming, New Mexico, etc) typically have 15-30% correction factors, which make statements like "I made XXX power on stock rods, fuel, pistons, clutch" basically useless without stating actual power, because actual power is what those parts are seeing.
Simple, just post your actual numbers and you can say it supports that much.
Race Director
Joined: May 2004
Posts: 16,667
Likes: 1,209
From: Raleigh, NC
St. Jude Donor '15
I'd leave it installed but disable the hobbs switch or whatever is turning it on and see if it'll hold fuel pressure without it. Then you'll know if you actually need it or not. No reason to put the extra stress on the pump if you can avoid it, IMO anyways.
Racer
Joined: Jun 2017
Posts: 365
Likes: 18
ill have to double check how it’s currently running as I’ve never seen a Hobbs switch. Wonder if they’ve wired it permanently
Racer
Joined: Jun 2017
Posts: 365
Likes: 18