Race pumps fuel pump
Thread Starter
Melting Slicks
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
Race pumps fuel pump
What if any experience has anybody had with the Race Pumps style fuel pump. I have one and the correct regulator. Just worried that it might be a pain. Also, what horsepower will a mechanical pump support because I eventually will be upgrading. I'm dynoed at 508hp right now.
Rob
Rob
Burning Brakes
Joined: Dec 2008
Posts: 1,057
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From: 2011,2012 ECS CC 10.50 CHAMP Massapequa NY
What if any experience has anybody had with the Race Pumps style fuel pump. I have one and the correct regulator. Just worried that it might be a pain. Also, what horsepower will a mechanical pump support because I eventually will be upgrading. I'm dynoed at 508hp right now.
Rob
Rob
Race Director
Joined: Jan 2000
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From: Corsicana, Tx
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Only person I know with one spent more time on the side of the road when it quit pumping than he did driving it! He's got a basic Holley mechanical now.
JIM
JIM
Melting Slicks
Joined: Oct 2008
Posts: 2,154
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From: Regina Sk Canada
I had a holley 110 mech pump, i had gone through 3 till i got one that worked? Bad diaphrams in them at that time. I am going to buy an Edelbrock 110 this time for my new motor.
Rule of thumb for fuel pumps.if the motor makes 500 HP you will need a pump that cam deliver 250 lbs pr hour. convert to gallons = 41.6gal pr hour.remember the pump has to suck the fuel from the tank, if you launch the car hard with slicks, you need to take into account the G-force against the fuel in the line to get to the pump.
Alot of guys confuse fuel pressure for fuel volume. I have seen guys jet up and crank the fuel pressure up because the car bogs off the line. well they are not getting enough fuel up there. Get a pump for your application. volume over pressure all the time. feed the engine, the needle and seat will only hold so much PSI.
Rule of thumb for fuel pumps.if the motor makes 500 HP you will need a pump that cam deliver 250 lbs pr hour. convert to gallons = 41.6gal pr hour.remember the pump has to suck the fuel from the tank, if you launch the car hard with slicks, you need to take into account the G-force against the fuel in the line to get to the pump.
Alot of guys confuse fuel pressure for fuel volume. I have seen guys jet up and crank the fuel pressure up because the car bogs off the line. well they are not getting enough fuel up there. Get a pump for your application. volume over pressure all the time. feed the engine, the needle and seat will only hold so much PSI.
Burning Brakes
Joined: Dec 2008
Posts: 1,057
Likes: 4
From: 2011,2012 ECS CC 10.50 CHAMP Massapequa NY
My brother had the problem of loosing its prime and it was from using a paper filter element. You have to use a screen type filter. Its been trouble free now.
Race Director
Joined: Jan 2000
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From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
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Thanks.....but he's run it with no filter on inlet, same issues.
I know some folks have had great luck with them...and the concept looks fine....but way too many folks seem to have trouble with them. I think they did some redesign in later designs that may have helped, but I'm not going to mess with them. I'll stick with what works.
The Carter high volume ones work well too.
JIM
I know some folks have had great luck with them...and the concept looks fine....but way too many folks seem to have trouble with them. I think they did some redesign in later designs that may have helped, but I'm not going to mess with them. I'll stick with what works.
The Carter high volume ones work well too.
JIM
Le Mans Master
Joined: Oct 2006
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From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
Ol' Red has had a stock pump since new- the original L-89, a crate L-88 and the current crate LS-7. I replaced the original pump last year because of fuel stains around the vent hole- no liquid, just stains- with another original style pump. Never had any issue with running out of fuel. as long as there's gas in the tank, it gets to the carb.
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Melting Slicks
Joined: Jan 2006
Posts: 3,028
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From: North NJ
I bought a rebuilt Race Pump from the company via ebay a few years back for my Merlin 509. Think i bought it in 2006 and it was a 2005 pump that they never sold so they upgraded all the seals to the new stuff and sold it for half the price on ebay. Had to prime the pump before install in a bucket with gas. Used a comp cams fuel push rod (same as would be used on a diaphram pump) I got one with a brass tip for wear control.I'm running it with a Malory fuel regulator and have no problems.
Engine has to crank a few revolutions before the beast fires up but I've had no issues with my 600hp big block motor. I have a screen filter on the suction side and a mesh filter on the push side. My pump will support anywhere up to 1,500hp. Just make sure you have a capable fuel pressure regulator and plumbing.
Only issue is because it is a piston style pump I'm having a hard time getting a fuel pressure gauge to read constant pressure b/c of the piston pulsing. The reading is very erratic due to the pulses. I have a liquid filled gauge and everything on an extra port on the regulator.
Drifting
Joined: Jul 2000
Posts: 1,347
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From: Melbourne Australia
I bought a rebuilt Race Pump from the company via ebay a few years back for my Merlin 509. Think i bought it in 2006 and it was a 2005 pump that they never sold so they upgraded all the seals to the new stuff and sold it for half the price on ebay. Had to prime the pump before install in a bucket with gas. Used a comp cams fuel push rod (same as would be used on a diaphram pump) I got one with a brass tip for wear control.I'm running it with a Malory fuel regulator and have no problems.
Engine has to crank a few revolutions before the beast fires up but I've had no issues with my 600hp big block motor. I have a screen filter on the suction side and a mesh filter on the push side. My pump will support anywhere up to 1,500hp. Just make sure you have a capable fuel pressure regulator and plumbing.
Only issue is because it is a piston style pump I'm having a hard time getting a fuel pressure gauge to read constant pressure b/c of the piston pulsing. The reading is very erratic due to the pulses. I have a liquid filled gauge and everything on an extra port on the regulator.
Thread Starter
Melting Slicks
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
Thanks for the input guys, I'll give it a go. I also have one of their rebuilt ones with a race pump regulator with the vacuum hookup to reduce pressure at idle and a fitting on the regulator for the return back to the tank.
Melting Slicks
Joined: Jan 2006
Posts: 3,028
Likes: 2
From: North NJ
My Mallory regulator has a return also, and I can tell you it returns ALOT of fuel back to the tank at idle.
Thread Starter
Melting Slicks
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
