Fuel pump amperage draw?

art leong · 10-22-2011, 05:58 PM

How can I find out the amperage draw of racing fuel pumps.
I've got an Aeromotive A 1000 and it's grossly overkill for my application. I'm going to go smaller over the winter. Want to get one that draws the least current.

BlueOval Ralph · 10-23-2011, 08:23 AM

Art call Weldon when you get their pumps they have a flow chart amp draw vs pressure and voltage + you wont find a better part or warnnty

Quote:

Originally Posted by art leong

How can I find out the amperage draw of racing fuel pumps.
I've got an Aeromotive A 1000 and it's grossly overkill for my application. I'm going to go smaller over the winter. Want to get one that draws the least current.

Mark Lewis · 10-23-2011, 09:17 AM

Art, there is a tool called a fuse buddy. It is made for flat blade fuses, not sure about round ones. Get the right one for your application and plug it into the circuit and it will tell the amp draw you have on that circuit NAPA sells them, not sure about anywhere else. Hope this helps.
Mark

buzzinhalfdozen · 10-24-2011, 05:01 PM

Art, you can use your DVOM most have an amp setting. Just hook one wire to Batt pos. the other to your pumps pos. wire and read the display. If your meter doesn't do Amps please disregard, however I'm not sure I would purchase a fuel pump based on amp draw alone. Amp draw of an electric motor is not a true indicator of how good it is. Just my opinion. Joe

art leong · 10-24-2011, 05:37 PM

There is nothing wrong with the present setup. It's just overkill for the power I make.
And I'm looking the lower my amperage draw. I can slow my car down .08 to a tenth by putting the electric fans on. So I figure that there is something in a smaller fuel pump.

Adger Smith · 10-24-2011, 08:36 PM

Art,
The slower ET is probably because the Electric fans are blowing forward. It might be to your advantage to reverse the rotation & make them puller fans.
With a big enough battery your ride might be quicker. Keep it quiet.. I can see it now-- an ART fan rotation rule... ;~)

Jim Craig · 10-25-2011, 10:19 AM

Before you call any pump manufacturer, make sure you have all the engine and vehicle information -- size, horsepower, fuel being used, system pressure (very important), fuel cell or modified factory tank, exisitng fuel line configuration, bypass regulator (type & location).

The manufacturer should be able to provide either actual flow curves for the suitable fuel pump or the numbers for said pump. Biggest mistake in fuel system design is too much pump................it'll kill the engine's performance.

good luck

buzzinhalfdozen · 10-25-2011, 10:37 AM

Jim, I'd have to disagree about the biggest mistake being putting too much pump to the system. In this instance at least it's better to go bigger, bigger lines, bigger pumps, bigger regulators from my experience have no detrimental effects on engine performance. Of course the entire system has to be compatable, example don't put 5/8 line with marginal pump ect. Most companies have complete systems that are designed to work as a unit. Joe

Jim Craig · 10-25-2011, 10:46 AM

Quote:

Originally Posted by buzzinhalfdozen

Jim, I'd have to disagree about the biggest mistake being putting too much pump to the system. In this instance at least it's better to go bigger, bigger lines, bigger pumps, bigger regulators from my experience have no detrimental effects on engine performance. Of course the entire system has to be compatable, example don't put 5/8 line with marginal pump ect. Most companies have complete systems that are designed to work as a unit. Joe

Joe -- I guess we'll have to agree to disagree; it is best to design the system to match the engine's performance -- not design on a hypothetical performance. You'd be surprised how the properly sized fuel system will actually pick up a car's performance, especially in the first half of the track.

KRatcliff · 10-25-2011, 11:01 AM

Jim Craig helped us with the size of the Weldon fuel pump and overall design of our system on our Super Stocker. The pump is far smaller than you would imagine and the car runs fairly well.

10-22-2011, 05:58 PM	#1
art leong VIP Member Join Date: Dec 2001 Location: Richmond Hill, Georgia Posts: 2,003 Likes: 0 Liked 1 Time in 1 Post	Fuel pump amperage draw? How can I find out the amperage draw of racing fuel pumps. I've got an Aeromotive A 1000 and it's grossly overkill for my application. I'm going to go smaller over the winter. Want to get one that draws the least current. __________________ Art Leong 2095 SS

10-23-2011, 09:17 AM	#3
Mark Lewis Member Join Date: Apr 2006 Posts: 349 Likes: 64 Liked 207 Times in 44 Posts	Re: Fuel pump amperage draw? Art, there is a tool called a fuse buddy. It is made for flat blade fuses, not sure about round ones. Get the right one for your application and plug it into the circuit and it will tell the amp draw you have on that circuit NAPA sells them, not sure about anywhere else. Hope this helps. Mark

10-24-2011, 05:01 PM	#4
buzzinhalfdozen Senior Member Join Date: Sep 2006 Location: Bellevue Ohio Posts: 984 Likes: 0 Liked 11 Times in 8 Posts	Re: Fuel pump amperage draw? Art, you can use your DVOM most have an amp setting. Just hook one wire to Batt pos. the other to your pumps pos. wire and read the display. If your meter doesn't do Amps please disregard, however I'm not sure I would purchase a fuel pump based on amp draw alone. Amp draw of an electric motor is not a true indicator of how good it is. Just my opinion. Joe __________________ Joe Buchanan SS/BX 3117

10-24-2011, 05:37 PM	#5
art leong VIP Member Join Date: Dec 2001 Location: Richmond Hill, Georgia Posts: 2,003 Likes: 0 Liked 1 Time in 1 Post	Re: Fuel pump amperage draw? There is nothing wrong with the present setup. It's just overkill for the power I make. And I'm looking the lower my amperage draw. I can slow my car down .08 to a tenth by putting the electric fans on. So I figure that there is something in a smaller fuel pump. __________________ Art Leong 2095 SS

10-24-2011, 08:36 PM	#6
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Fuel pump amperage draw? Art, The slower ET is probably because the Electric fans are blowing forward. It might be to your advantage to reverse the rotation & make them puller fans. With a big enough battery your ride might be quicker. Keep it quiet.. I can see it now-- an ART fan rotation rule... ;~) __________________ Adger Smith (Former SS) Last edited by Adger Smith; 10-24-2011 at 08:37 PM. Reason: sp

10-25-2011, 10:19 AM	#7
Jim Craig Member Join Date: Dec 2009 Location: Clinton, OH Posts: 106 Likes: 0 Liked 5 Times in 3 Posts	Re: Fuel pump amperage draw? Before you call any pump manufacturer, make sure you have all the engine and vehicle information -- size, horsepower, fuel being used, system pressure (very important), fuel cell or modified factory tank, exisitng fuel line configuration, bypass regulator (type & location). The manufacturer should be able to provide either actual flow curves for the suitable fuel pump or the numbers for said pump. Biggest mistake in fuel system design is too much pump................it'll kill the engine's performance. good luck

10-25-2011, 10:37 AM	#8
buzzinhalfdozen Senior Member Join Date: Sep 2006 Location: Bellevue Ohio Posts: 984 Likes: 0 Liked 11 Times in 8 Posts	Re: Fuel pump amperage draw? Jim, I'd have to disagree about the biggest mistake being putting too much pump to the system. In this instance at least it's better to go bigger, bigger lines, bigger pumps, bigger regulators from my experience have no detrimental effects on engine performance. Of course the entire system has to be compatable, example don't put 5/8 line with marginal pump ect. Most companies have complete systems that are designed to work as a unit. Joe __________________ Joe Buchanan SS/BX 3117

10-25-2011, 11:01 AM	#10
KRatcliff Senior Member Join Date: Sep 2011 Posts: 769 Likes: 75 Liked 534 Times in 143 Posts	Re: Fuel pump amperage draw? Jim Craig helped us with the size of the Weldon fuel pump and overall design of our system on our Super Stocker. The pump is far smaller than you would imagine and the car runs fairly well.