Carb/Nitrous guys come on in!
 

So my Holley blue fuel pump is failing on me (bad brushes worn commutator) and I need to replace it. The blue has always been sufficient up till now at keeping the carb fed with fuel. My question is will a Holley Black keep me fed with the new 331 I'm building? The plan is to ditch the super powershot NOS system I have now and get a big shot and shoot 200 through a progressive controller eventually. Will the black supply the fuel? I have -8 lines from the pickup to the regulator and -6 from the reg. to the carb. Thanks in advance.

I would run either a bigger pump or two pumps

You can always up the pressure on a blue pump with a spring kit if the pressure is what is falling off.I have Aeromotive A1000 just sitting on the shelf that has -10's in/out.It needs to be sent to Aeromotive to be freshened up.Other than that it is fine.

What are you running?

Yeah I never ever lose pressure at WOT. Its now just a matter of the pump not starting if I shut it off, and having to rap on it to get it started or take it apart and spin the shaft manually and itll go.

I currently run a 6.5 lbs of pressure.

New black for the regular fuel system and a small fuel cell and Blue for the nitrous supply. I never believe in pulling nitrous fuel supply off of the normal system. Just my opinion.

are you running a standalone cell for the nitrous? with a bigger shot it would probably be a good idea, always a good idea to flow it every time you go to the track

You may be right. What worries me is when guys run one grade of fuel for the carb and a higher grade for the nitrous sys. Seems sketchy to me, I'd be worried about the lower grade fuel detonating??

More money More money lol

I alway's ran a Holley Black with nitrous on my big block. Never had a problem running a 275 shot.

rebuild the blue for the motor. Its like $15 for a rebuild kit. You can get a jegs brand black pump"holley black" for $97. Jegs has a 1 gallon cell for $120.

One pump, fuel log with separate regs.

Just run 93 in the car tank and you'll be fine.

Why?

You ever had anything with nitrous?

here we go...

I think the separate pump, seperate tank deal is more for street cars with stock in tank pumps, stock everything else- mainly efi cars with multiple tunes. Even then, I don't care for it. All Shawn needs is a good pump and a couple $30 Holley regs.

If 900" motors with 5 systems can run off one pump and one log, I have a feeling Shawn would be fine.

^^^^^^See there. Skreet car. Running a plate kit on EFI fuel pressure is PITA. Been there done that.

Just dont like it. Rather keep them seperate. Like food on a plate, it should never touch. Im just picky like that.

What are you calling a "fuel log"? I have a log style filter is that what you mean? I currently have two of the holley regs on the car.....One runs the the carb and the first stage and the other is for the second stage. I wanna lose the second stage anyway so should I use one reg for the carb and the other reg for the single stage when I change to the big shot?

Oughta work for me then! :bigthumb:

http://www.streetlegaltv.com/forum/a...1&d=1269529748


http://www.dragzine.com/news/new-pro...om-aeromotive/

That looks like something off Zac's car. Outa my league lol.

read the article. I believe that is what wes is talking about

Ask him how fast he was going....Unless your gonna buy a high dollar single pump like Wes is talking about then just do what I recommended its cheaper. With a front mount cell you can run race gas in it and 93 in the tank. It makes it not quite so timing sensetive.

Not trying to be a pain I just dont like the front mounted fuel cell idea. When I saw that on Brandons car I cringed. I can just see him hitting the wall and that fuel cell rupturing......instant fireball. Scares me having a gallon of fuel 6 inches from the header.

Be prepared to spends some money then. Plenty of people run that setup.

id run a a2000. would be plenty for that built motor. my dad has one that is basically brand new that he may get rid of.

bg 400 for motor and a fogger and a plate and never had any problems.it run 490 with that .small block..

Why would you want to run two different grades of fuel? The engine has to burn whatever you stuff down it's throat anyways. Just does not make sense. Run one type of fuel or the other.

Shawn, One pump and multiple regulators will work just like Wes said. You can always get rid of your stock tank and replace it with a fuel cell (hence weight savings) say like an 8 or 12 gallon cell. They come with more than one fuel feed so you can run two fuel pumps. I run two pumps because I was getting some pressure creep on the fuel regulator feeding the nitrous sytem. I had a hard time keeping the pressure consistant. I've got a holley blue for the nitrous and a magnafuel quick star 300 for the carb. So far no pressure creep, and works like a charm.

Whatever you do, please do not mix fuels. That might work fine for some street style setups but would be highly unadvisable for your setup. You can never get a tune right if your fuel type/mixture is inconsistent. That is a bad idea for so many reasons but I'm not going to get into it all, just don't do it....

I would run one big, good pump. When in doubt, look at a pro mod, lol. They run one pump.

The holly regs are perfect. They have been proven (datalogged) to hold pressure steadier than other nitrous side regs. Again, look what comes on a $100k nitrous pro mod motors from Fulton- holley's.

Do not mix your fuels!!! That is retarded!!!

Mixing fuels may not be the best route, but it's working for me and fits my budget. Yes, before its said "itll be cheaper than rebuilding the motor", I know this, but knock on wood, it's working so far. And the way my cell is mounted would take a side impact to rupture it, much safer than these....

and theyre are THOUSANDS of guys running their cells this way...
http://www.yellowbullet.com/forum/sh...ount+fuel+cell

There are plenty of cars that run 93 in the stock tank and race gas in the nitrous cell. Most of them are street cars and some of them are in the mid 5's. I can think of about 5 cars that I personally know that run that setup and they haven't had an issue yet. Once you get the tune up right I dont see how the mixture would change. Your always running 93 through the carb and when the nitrous hits its 112 through the plate.

Thats what we run in brandon's car and we have the tune up spot on. We haven't had any nitrous back fires, burnt plugs, or anything. Hell marcus even hit the rev limiter when the driveshaft spit out and the nitrous was on.

How do you know the tune is spot on when y'all have never shut the car off and pulled it back to check plugs? Y'all have no idea what your tune really is.

And 93 changes from pump to pump and brand to brand by the way.

I have told Brandon 100 times what to do to make sure he's good. Ya'll may even be leaving something on the table and not know it.

just run e85 in the tank and be done with it

then you will need a pump big enough to bump a swimming pool

Yes we have pulled the car back a couple of times, and when the car broke, it was shut down and they looked good then too. The 93 is always from Hess lol, and the gas is the same brand. I want to get it to Tuten, but im poor.

Need to tune nitrous at the track. Shooting it on the dyno is not the same.