Fuel system
 

After changing 2 fuel regualtors I discovered my fuel pump decided to go out of town while I was racing at Lebanon Valley this weekend. I had too much fuel pressure from the pump.

I plan on buying new pump, regulator and what ever is trick. I am looking for insights on what is best system for a Chevy II, 350/200 stock eliminator car.

Open to all suggestion before I make my decsion.

Thanks for the insights.

Re: Fuel system
 

I don't think you can go wrong with the Aeromotive for both cost and reliability. I bought two so I would have a spare but so far, after fours years I haven't needed it. I have a Magnaflow in the box waiting but see no need to use it at this time. Jim


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Re: Fuel system
 

I also have used the Aeromotive pumps and they worked well.

Installed an A1000 in my EFI Firebird after the pump that was in the car failed up at Lebanon Vally.....It was a similar pump made by Paxton.

Used an A-2000 in my dragster and it worked fine on gas or alcohol

Probably overkill for a Stocker but it never hurts to have a fuel system that is better than you need.

An A-2000 pump uses a return line at the pump back to the cell and pressure can be set at the pump before the regulator. I used 25 lbs at the pump.

I used a MagnaFuel regulator....pressure was rock solid....

Re: Fuel system
 

pick your posion. Holley, Mallory, Magnafuel, Product Engineering or Aeromotive, they all have a model that will get the job done. Nothing trick needed and I never subscribed to the thinking that you need a pump that can fill a pool and lines as big as fire hoses.

Ran a Mallory Comp 140 pump and dead headed regulator for many years feeding my 700+HP 468 from the stock/unsumped gas tank without issue.

Re: Fuel system
 

Joe I run Aeromotive......never had a problem...used the same pump when I ran the Qjet but with different regulator and a return line...my old 624 motor ran the best numbers with that setup

Re: Fuel system
 

x2 i run the A2000 in all my cars

Re: Fuel system
 

We just went to a whole Aeromotive A-1000 system (regulator, filter, etc) with return line. We deadheaded our old system and it seems the fuel pressure is more stable with the return line system. Everything seems OK so far.

Re: Fuel system
 

Aeromotive owners are racers and stand by their products. Plus made in Kansas City, no foreign junk.

Sean

Re: Fuel system
 

One big issue I had with the Aeromotive A-2000.....and I am sure it would apply to any other real high volumn pump....

Don't use a filter on the inlet side with a smaller than 100 micron rating....or do as I did and use no filter at all......

My pump would cavitate after 10-20 seconds with an Earl's screw together cannister filter on the inlet side.......and the pump was about 1 foot from the fuel cell......with a -10 line and one 90 degree turn into the pump.

Vibrated bad and pressure was totally unstable......
Not enough fuel getting into the pump......

Re: Fuel system
 

X3 on the A2000 pump. Never had one problem with any of their products.

Re: Fuel system
 

Well Joe there you have it whats it going to be?

Re: Fuel system
 

whichever way you go make sure that you do not overfuel the system.......too much fuel can be worse for your engine's performance than being on the "short" side. You'd be very surprised at how little an amount of fuel your engine (in particular) requires to operate at its potential and how many guys are "killing" their system and ultimately performance with too much fuel..............

Re: Fuel system
 

Lots of great information in addition to what systems work well. Thank you, any more insights will be accepted. I had a Performance Engineering system that worked great.
It had 10yrs of trouble free existance so I have no complaints.

Just wish I found it before the race but at least I know the problem. Lots of racers texted or private emailed me with their experience and some are still chasing a problem.

Thanks to everyone, see you at the races......

Jim great point, I agree totally. At one point I ran with 3 lbs of pressure (-84 under) and it ran better than when I had 18lbs. (could not get down the track)

Dennis going with the Barry Grant system, NOT...hahahaha

Re: Fuel system
 

^^^^^Like button.

Re: Fuel system
 

^^^Like Button.

Re: Fuel system
 

FYI, You could almost run a stock mechanical fuel pump with a Holley and get away with it. Dual inlet, and plenty of bowl volume.
Running a single inlet carb, with very limited bowl volume has unique needs that are different than a Holley.
If you never raced with a Qjet,AVS,THERMO Quad, ect, and or used a Data recorder, or a wide band O2, you may have a hard time believing this. Engine size, HP, car type will dictate what an engine likes. My brother has a 20 year old Comp 140 pump that came out of my car, in his 10.50 bracket car all day long without a problem. I have not experenced the same results.
Race on while we still have classes to race in.

Re: Fuel system
 

Joe,
D/SA 396/350 68 Camaro.
Took off an old Mallory pump, regulator and lines, replaced entire system with Aeromotive.
A-2000 pump, along with their regulator and new lines, picked up a tenth.
Granted the other stuff was old, but still, a TENTH?
Best part was the assistance from Aeromotive when I did have a question. great customer service!
Very easy to work with at the track.
and the best part....... (drum roll please.....)
Their contingency check is usually one of the FIRST to arrive. And in this day and age, that accounts for a lot in itself (IMO)!

Unk

Re: Fuel system
 

Todd, FYI, long before I ran a Holley carb, I ran a Q-Jet on my 468 well in to the 10's! Same pump, same dead headed regulator and same stock unsumped gas tank.

Re: Fuel system
 

Hi Ed, Did it run faster with the Holley or the Qjet? How fast did you end up running with that engine?

Re: Fuel system
 

it did run quicker IIRC .08 when I made the swap to a 950HP. Don't remember if or how much faster. Best ET/MPH with this cast iron oval port headed 468 in my 3880 lb. Chevelle was 10.07 @ 131

Re: Fuel system
 

A-B tested the same day, same track, same DA? Unless your old system was really, really bad, it's hard to imagine a tenth pickup. None the less, that's some serious HP you found in the fuel system to pick up that kind of ET.

Re: Fuel system
 

glad somebody said it. I'm not buying a tenth either.

Re: Fuel system
 

Why are you so inclined to argue with someone's first hand results. Obviously, he had a subpar fuel system.

Re: Fuel system
 

who's arguing?

Besides my own swap/testing, racers that I personally know, racers whose program is spot on, have not seen anything on the time slip other than a lighter wallet after swapping to a big pump and fuel lines.

That said, I believe half of what I see with my own eyes and none of what I read on internet forums,

Re: Fuel system
 

Unk is telling the truth. It was my car he was driving and the fuel system was very bad.

Re: Fuel system
 

The only time anybody has to believe or disbelieve the results is when a guy is in your class and he is a .10 + faster than you with the same car. If not if your taking time shots or bracket racing it doesn't much matter. As long as the car is not popping and is hitting on 8 you are good to go. Race and enjoy.

Everybody should run out and buy Holley Blue pumps. You can all save tons of money and run with anybody. Life is good!

Re: Fuel system
 

countless racers wish they had their $ and time back they spent swapping out their fuel pump/lines for a bigger pump and lines based on what they read and what in BG's full page ads back in the day because their current fuel system couldn't fill a gas can in x seconds that the snake oil salesman stated they needed for max performance. Great marketing ploy but a baseless, self serving claim.

Re: Fuel system
 

LOL @ Kyle,

Yep, it was his car & yes it was a SERIOUSLY handicapped & old fuel system that I removed.
Did I back to back it same day same DA, nope, hell, it took a weekend to remove the old & completely re-plum the car...... BUT we all live & die by the statistical numbers that we log for every lap down the track and I can honestly tell you that the new system outperformed the old by a tenth, maybe even a smidge more. And it was easily adjustable to allow running @ Bandimere and then Dallas 2 weeks later.... just a bit of DA change between those two.....
Does that mean the an Aeromotive system is a God send for every racer out ther.... NOPE,
but their stuff IS good, the company is GREAT to work with to diagnose any issues and they are among the first to get their contingency check in your hand.
AND, it is a made in USA company, owned by racers & staffed with the same.
Be skeptic if you wish, it really doesn't matter to me, was just sharing what I experienced with Joe.

Unk

Re: Fuel system
 

1320racer, Last year at Earlville points meet I change the relay to the fuel pump and picked up 2 tens, so what bob says mite have something to do with old fuel system.Tom

Re: Fuel system
 

tom, nothing wrong with an "old system" that is working, getting from point A to B without issue. Your system whether old or new had an issue which surely you felt during a pass, heard during a pass and/or seen on the time slip which is why you changed the relay and probably after chasing an issue for a while.

Re: Fuel system
 

Interesting comments. For years I ran just the cheap Holly 110 pump on a low 11 second Qjet stocker. I recently decided to throw a Magnafuel 300 pump in it. I left in the Aeromotive regulator and started to have a problem the odd time with the carb overflowing when turning the pump on. Good thing about having a data recorder is it allows you to sometime easily figure out what’s going on. Recording what was happening when I turned on the fuel pump showed that the carb was seeing a huge hydraulic impact that the regulator could not deal with as it was downstream from it. Solution was to pulse the pump at start up.
Bigger isn’t always better

Re: Fuel system
 

Chances are, a Mallory Comp 140 and The Volumax Holley Reg, #8 lines, front to back, with low restriction filter(after the pump), and #8 line from 8gallon fuel cell, would feed my E/SA 400 Pontiac? Im trying to decide what to do, for a pump , to get started...Or just spend 60.00 more and get a Magna Fuel Quickstar 275, and be done with it? Thoughts are appreciated...

Re: Fuel system
 

Brent: I would check the system that you currently have first. The system you have is very similar to what I had years ago and it wasn't bad. I think it's a good idea to do a fuel volume test to see how good your system is. If you can pump a gallon in 30 seconds or so, that's pretty good. Just unhook the fuel line from the carb (so the fuel does go thru the regulator). Scrutinize every single fitting, line and filter that the fuel passes thru by measuring the I.D. of each. Different types and brands of regulators, in particular, can be very restrictive. Like previously stated, Q-Jets require a very good fuel system due to the fact a single needle and seat and single fuel bowl.

Re: Fuel system
 

Jim, since ive been running brackets all these years, i have 2 pumps into a Y, from the cell , with #8 line goin up front to a Holley Vmax reg, no sharp 90* angles , all fittings are smooth bends... i just need to install 1 pump to be Stock legal... as far as fuel system goes. Engine is almost done...

Re: Fuel system
 

I run a upright fuel cell, mounted high, # 12 exits the rear of my cell to Magnafuel pump behind and below the cell, # 10 line forward 28 PSI, to my cool can then to my Magnafuel regulator mounted in front of my engine, 4 PSI to the carb. My return from the pump inters the cell from the top and has a hose thats brings the fuel to to bottom of the cell. # 10 vent on the top of the cell. My car at 3720 on a 9 inch tire, two step moves extremely hard in the first 330 feet given the conditions, I feel this fuel system has something to do with this, my A/F ratio is maintained easier. My pump is run off a relay.