Race Pumps Q&A, Moderated by Howard Stewart

How to, pump question

Reid — Sun, 08 Nov 2009 05:38:22 GMT

How are the small Teflon o-rings installed into the RacePumps from the factory?

I can't get the 1/8" NPT plug out

Reid — Sat, 07 Nov 2009 08:09:27 GMT

I can't get the 1/8" pipe plug out of the regulator. It's a new reg. that I got in today. I broke an Allen wrench trying to get the thing out to install the gauge. Should I try an impact? LOL! I made an adapter fitting to go on the idle bleed fitting so I could start it and set the fuel pressure with the gauge. Are the regulators pre-set @ 7 psi? Any thoughts on how to get it out? I don't want to round the inside of the pipe plug in fear I may never get it out.

Pump fitting?

Reid — Sun, 01 Nov 2009 03:13:57 GMT

I had my pump apart recently to replace the o-rings. While I had the pump apart I took both the inlet and outlet fittings out and discovered that they both had o-rings on the fittings. I had read in the FAQ that ( The Race Pump takes a special fitting...it is shorter than a standard AN Port fitting and doesn't use an O-ring.) Does this need to be addressed or not? Also, on a different subject, can I purchase all of the Teflon internals of the pump? (2 teflon o-rings, 1 big 1 small and the Teflon washer/spring locator ) and how much would it cost? Thanks.

fuel pump support

joseph cormier — Fri, 30 Oct 2009 15:41:14 GMT

I have a small block chevy 406 making about 750hp.I am thinking about purchasing a nitrous express alchohol nos 2 stage plate kit that goes up to 800hp.I was wondering how well would this pump support the motor and both stages of nos on alchohol.

SBM

Pete — Tue, 27 Oct 2009 08:16:40 GMT

Hello,
I'm planing to buy a race pump to my small block mopar stroker project. I would like to know if the pushrod is included with pump part #1900?

How this pushrod pump work with stock style cam eccentric drive? Typically the mechanical fuel pump diaphragm lever mates the cam eccentric drive from the side by spring pressure.

There is always some friction that forces the pushrod to side from it's parallel position toward camshaft rotation center. So does the pushrod stay in the position while engine is running? Or Am I missing something?

Best Regards

Pete
Finland

5052 Regular right for returnless fuel system?

Larry — Sat, 17 Oct 2009 08:21:52 GMT

Hi! I came across your pumps while looking for a regulator that can work with a returnless fuel system.

Long story short we have a turbocharged smart car that needs these huge fuel injectors to reach our desired wheel HP. However with the fuel injectors almost twice as large then the stock one, each "pulse width" applied to the fuel injectors gives the car a very rich mixture up until it goes into boost, so easy driving under vacuum would have drivability issues.

Trying to not convert the system into a return fuel system and getting a typical return style fuel pressure regulator... can I use the 5052 and fit it between the fuel pump and the fuel rail and attach the vacuum / boost line to the reference port on the 5052 pump?

I am hoping to be able to decrease pressure when it's at idle and under vacuum... and from my understanding I should adjust it so I'm getting 45 psi (the minimum of the 5052 regulator) at idle without the vacuum line attached.. and then when I do attach it it should decrease my fuel pressure on the fuel rail?

I basically need to lower the pressure i'm getting now from the OEM pump to the fuel rail... I can tune the air fuel mixture with the piggy back ecu I have.. Just need a regulator that I can lower the actual pressure and then have it remove the restriction or bring it back up to full pump capacity under boost.

Is there a real difference between the 5052 and the 5032?... I'm only aiming for 200 wheel horsepower when the stock engine was making 65 wheel horsepower out of a 1 liter 3 cylinder engine.

Thanks for your time!
Larry

fuel cell

John — Fri, 16 Oct 2009 19:30:02 GMT

I have a 77 corvette and will be putting in a 496 big block. I will use 2 turbos to get 1500 Hp with EFI. I want to know if I can use the stock fuel tank and fuel line with a electic fuel pump to run fuel to a one gallon fuel cell in front of the nose of the car with a return line from the top of the cell back to the tank. This will be a street/strip car.

pump leak

David — Sat, 03 Oct 2009 17:52:00 GMT

Ive got a small fuel leak, seems to be coming from the inlet and outlet fittings in the pump itself, only a small leak.

whats your thoughts?

david

regulator plumbing

Corky Bryant — Thur, 24 Sep 2009 19:12:11 GMT

Howard, is it OK to plumb #8 inlet and only one #8 outlet at the regulator. If so whice P/N fitting do i need for the outlet side. I originally was going to plumb #8 in and two #6 out but have changed my mind.

Tank pick up location

Corky Bryant — Mon, 21 Sep 2009 21:03:55 GMT

Howard, i am installing your pump and regulator on my 612 cu in BBC. The question i have is regarding the tank pick up location. The tank is custom built for a external elec. pump and the pick up tube comes out the top. I am wondering if the pump will have a hard time pulling the fuel up and out of this tank arrangement. The tank is rear mounted in a 55 Chevy Pro street.

598 BBC

Kyle — Wed, 16 Sep 2009 23:49:20 GMT

hey i have a 598 bbc using your fuel pump and 5010 regulator its carburated with a 1150 dominator it makes 1000hp i would like like to no what would be best -6 lines to the carb or -8 lines? I have -8 lines everywhere else so i was gonna go with -8 to the carb would that be ok? Thanks

Dead Head System

frank ziherle — Sun, 06 Sep 2009 01:10:28 GMT

hello howard,thanks for the recommendation of pn5011 reg to be used w/edelbrock victor mech. pump on my sbc 355.i thought i read where you said to run a deadhead system on mechanical systems like mine .the 5011 has a return- -do i use it and the idle bleed or am i hopelessly confused? thanks! frank z

Regulator For Edlebrock Pump

frank ziherle — Sat, 05 Sep 2009 13:50:58 GMT

hello,what fuel pressure reg.do you recommend for a sbc 355 / 500 horse running an edelbrock victor mechanical race pump?autocross competetion camaro

Regulator Leaking From Small Fitting

Mark Ross — Mon, 10 Aug 2009 04:30:04 GMT

Howard,
I've got a small issue/question. I've got a 5011 regulator and the little 1/8 barb fitting on the top is leaking fuel when running. I just noticed it and seems to be dumping fuel. Do I need to run a vaccum line off this to the intake manifold? Currently it is just sitting there with nothing attached. This is a return system with the idle bleed. I've circled in the image where the fuel is coming out.

Fuel system

Russ — Mon, 27 Jul 2009 20:54:23 GMT

I have a few questions on a fuel system, what i have is drag car 422 cid sb mopar, 2100 lbs, powerglide, tranny brake,and a two step. Been running mid 9s on gas. Converting to m5 alcohol. Fuel system now, 2 holley black pumps feed with 8 line up to a y block with #8 line, then #8 line to 5011 regulator and 2#6 lines feeding single carb. Do you think this is sufficient? Ant suggestions would be helpful. Thank You...