Race Pumps Q&A, Moderated by Howard Stewart

Nitrous Regulators

sean — Fri, 29 Aug 2008 03:55:57 GMT

Do your regulators work with nitrous? to get down below 5 psi? for 3-4 systems? how do they compare to the traditional holley regulator?

Thanks,,

sean

EFI Conversion For Pump?

josh whitcomb — Sat, 23 Aug 2008 13:46:45 GMT

i just received the 150 psi spring formy 1500 sbc pump. there is no way that spring is going to fit in that pump. it coil binds a half inch before i can get the plate in all the way and the c clip on. now what???

Regulators

Chad — Mon, 11 Aug 2008 13:08:59 GMT

I have a SBC 383. With your 1500 pump can I use a Holley 12-803 deadhead regulator? Or do I need a return/bleed line? Is a vapor line required?

Thanks,
Chad

Aeromotive A2000 bypass regulator

Dale — Sun, 10 Aug 2008 17:09:44 GMT

As I am going to a Turbo set up, will this regulator ( Aeromotive A2000 bypass regulator) work with your pump??

And if so, do I need to run a return line as well??

Fuel System for 540 BBC

Dave J — Sat, 02 Aug 2008 05:41:39 GMT

I'm considering one of your race pump systems, even though popular opinion seems to be a 140 GPH electric, a regulator with a return line using -8 lines to/from regulator and -6 to carb bowls. With relays, pressure switches, twin -8 lines, etc., obviously your race pump system seems the way to go for my 700HP 540/1969 Camaro, which is really a street car, with a few trips to the track every year. What exactly do I need to make your Race Pump system work on this car? I have sumped the original tank with two 3/8 NPT bungs, but have not run any lines yet up to the engine. Can I use the original 5/16 fuel line coming from the sending unit as the return line from one of your regulators? Also, can you recommend a fuel filter w/ micron size and best location for this project.

I look forward to your recommendations.

High Idle pressure

John Baker — Mon, 28 Jul 2008 16:31:16 GMT

Hi Howard,
You have been a tremendous help and have gone well beyond most part suppliers that I have dealt with- with that in mind and I hope your head still fits your cap- You rebuilt my pump to handle a blown 540" Chevy running 18psi for a boat about 1 month ago. The cruise and WOT function perfectly now. However, at idle my pressure starts to build. As the engine surges between 600rpm and 1200rpm (Blower/cam lope) the pump will bleed some pressure than rise above the initial value- and keep rising right through 16psi. At around 14psi my seats won't handle the pressure anymore.
What do I need to do??

Should the idle bleed reduce the fuel pressure?

Colin Spallin — Sun, 27 Jul 2008 18:06:57 GMT

Hi Howard, I've got a 1500 pump with a 5010 regulator on a mild SBC. I was having problems with heatsoakduring the hot weather and didn't have a return line installed. After installing a return line, with the #70 jet installed, I only have 2psi fuel pressure at idle. When the engine is revved up then the pressure rises to 9psi. Any ideas on why it won't maintain 9psi all the time?

Inline electric to feed race pump?

Derrick — Tue, 22 Jul 2008 21:29:36 GMT

Is there any advantage to useing a inline electirc pump to feed the race pump?

Holley Regulator With Methanol?

Andrew — Sat, 19 Jul 2008 04:44:51 GMT

Hi Howard, I currently use a Holley 12-707 4 port deadhead reg. It is vacuum referenced and I wish to retain this setup with the racepump. Will this reg work OK with your pump and a carburetted alcohol SBC of about 480-500 HP ? I will be adding a 6/71 in the future and wish to leave the fuel system in this configuration. Will this still work with 2 alcohol carbs and about 600 HP ?

Thanks for your help...... Andrew

Regulator mouting brackets?

Marc — Thur, 26 Jun 2008 17:05:20 GMT

Do you sell any brackets for your regulators? If so where?

Thanks

1/2" fuel line with return?

Marc — Thur, 26 Jun 2008 16:48:55 GMT

I currently have a Chevy 350 that in the future I'm going to supercharge around 600hp. This winter I replaced my fuel line with (2) 1/2" stainless fuel lines while doing an underside resto. One for foward and one future return. The tank will have the correct sump in it also, because the stock pickup is only 3/8". Could I use a return line? Also what pump should I use with what regulator?

Thanks
Marc , N,Y

fuel pump backup

Larry Kahn — Sun, 08 Jun 2008 23:51:17 GMT

Hello. I would like to use your fuel pump as my primary source of fuel. I'm running a small block chevy with EFI at about 500 hp max 350 hp continuous. This setup is in a boat and I would like to have a backup pump just in case. I was wondering if I could use a manually switched on returnless in tank fuel pump? Or a second option would be an external electric pump with a return line. Please tell me what the best backup setup would be and how it would be integrated into your system. Thanks

Pushrod Length & Fuel Line Routing

Jon Boxer — Wed, 04 Jun 2008 23:49:22 GMT

I plan on using your pump and regulator on my EFI small block chevy. I have a roller cam so I want to use one of your bronze tip pushrods. You offer a standard length and one that is +.200. Which one do I need? Also I looked at your fuel line diagram for EFI and you show two lines coming off the regulator and going into the back of each fuel rail. With my old setup I only had one line running into the back of one fuel rail and my return line came off the back of the other fuel rail where the regulator is. I removed the original regulator and plugged the hole. So can I still just run the one line into the back of the fuel rail or do I need to run one into each rail. There is a piece of fuel line that joins the two rails in the front. Also when I first looked into your pump I read that a return line isn't neccesary unless you have high underhood temps, but now I see that you seem to reccomend it more and I see it in your diagram. I would rather not have to use one to keep the fuel system more simple. My motor is going into a 71 chevelle with a cowl induction hood, so with a big engine compartment and cowl hood my underhood temps shouldn't get too high. But it will be a street car, so I want to make sure I won't have a vapor lock problem if I get stuck in traffic or something like that. What do you reccomend? Thanks for the help, sorry for such a long post.

turbo ford

kidd — Mon, 02 Jun 2008 21:25:53 GMT

need to know will your pump support 1400 hp twin turbo small block ford fuel injected.if so whats the max hp your pump will support force induction injected

Supply Line

Harry Anderson — Sun, 01 Jun 2008 17:20:17 GMT

Howard
Nice site. I'm planning on on switching to your fuel pump. I currently have a -12 supply line on my twin Gentry turbo water ski race boat. Is there room for -12 supply fitting on the pump? Also I have a very large paper water separator/filter and Holley regulators,will those still work? The current system uses a Holley mechanical and electrical pump, check valves and pressure switch, not very dependable. High altitude (6200') seems to affect this set up too.
thanks, Harry