Fuel Pump Question??
Thread Starter
Staging Lane
Joined: Feb 2014
Posts: 81
Likes: 0
From: Pocatello Idaho
Fuel Pump Question?? Iam trying to decide on what type of fuel pump to get, i will be getting a set of 60lb injectors and running a s475, not going to be running tons of boost, 8-12 ish. engine is a l33 returnless fuel system if any more questions about the setup just ask. iam curious as to what i need for a pump,also want to run an external.thanks.
Thread Starter
Staging Lane
Joined: Feb 2014
Posts: 81
Likes: 0
From: Pocatello Idaho
iam trying to keep the engine bay looking completely stock,besides the charger obviously,but stock rails,i have a cell and will be running that,was looking at an A1000,and rolling with the regulator that coinsides with the a1000, but still looking, so to answer your question even better, iam starting from scratch, except wanting to keep the stock rails.
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Joined: Nov 2003
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From: Norn Iron
Walbro 400 is in tank only.
Basically you'll need to use a fuel pressure regulator local to the rails. Ideally you would pump through the rails and then into the regulator and return. But if you wish to retain the OEM dead end rails without modification, mount the FPR local to the rails instead, and again add a return from the reg back to the tank.
A1000 should be fine and cover a fair bit of power.
Basically you'll need to use a fuel pressure regulator local to the rails. Ideally you would pump through the rails and then into the regulator and return. But if you wish to retain the OEM dead end rails without modification, mount the FPR local to the rails instead, and again add a return from the reg back to the tank.
A1000 should be fine and cover a fair bit of power.
Thread Starter
Staging Lane
Joined: Feb 2014
Posts: 81
Likes: 0
From: Pocatello Idaho
Walbro 400 is in tank only.
Basically you'll need to use a fuel pressure regulator local to the rails. Ideally you would pump through the rails and then into the regulator and return. But if you wish to retain the OEM dead end rails without modification, mount the FPR local to the rails instead, and again add a return from the reg back to the tank.
A1000 should be fine and cover a fair bit of power.
Basically you'll need to use a fuel pressure regulator local to the rails. Ideally you would pump through the rails and then into the regulator and return. But if you wish to retain the OEM dead end rails without modification, mount the FPR local to the rails instead, and again add a return from the reg back to the tank.
A1000 should be fine and cover a fair bit of power.
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Joined: Nov 2003
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From: Norn Iron
cool,since the fuel system is returnless do i still need to run a return out of the regulator? or just plug the return side of the regulator? and thats where i planned on putting the regulator as close to the rails as possible. thanks agian,any info is helping the issue.
OEM is returnless because the regulator is in-tank. So whilst the external part is returnless, strictly speaking there is still a return as far as the overall system is concerned.
Yes you must have a return from your new " external" regulator.
Run a 1/2" -8 feed from pump to reg and 3/8" -6 return and that should cover you for a fair bit of power.
Then -8 or -6 from regulator to rails.
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Staging Lane
Joined: Feb 2014
Posts: 81
Likes: 0
From: Pocatello Idaho
OEM is returnless because the regulator is in-tank. So whilst the external part is returnless, strictly speaking there is still a return as far as the overall system is concerned.
Yes you must have a return from your new " external" regulator.
Run a 1/2" -8 feed from pump to reg and 3/8" -6 return and that should cover you for a fair bit of power.
Then -8 or -6 from regulator to rails.
Yes you must have a return from your new " external" regulator.
Run a 1/2" -8 feed from pump to reg and 3/8" -6 return and that should cover you for a fair bit of power.
Then -8 or -6 from regulator to rails.
9 Second Club
Joined: Nov 2003
Posts: 13,616
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From: Norn Iron
044 is a great pump, and compact. Can be used internal or external.
But 750whp ? Only in the US does it support those sort of numbers. In UK, 700 crank would be the absolute limit.
On average they do flow around 250-280lph at normal working pressures you'd expect in a boost efi application, and maintain this sort of flow right up to around 100-110psi
I would choose the 044 over the A1000 too if it can meet your needs ( hence I run a pair of them )
But 750whp ? Only in the US does it support those sort of numbers. In UK, 700 crank would be the absolute limit.
On average they do flow around 250-280lph at normal working pressures you'd expect in a boost efi application, and maintain this sort of flow right up to around 100-110psi
I would choose the 044 over the A1000 too if it can meet your needs ( hence I run a pair of them )