Magnafuel External fuel pumps

[norbs]

Actually why don;t you use 2 pumps one for street and one for race. Controlled by boost and a pressure switch. This is what i am going to do. Use a check valve on the smaller pump so fuel cant return through it. There is no reason to have a pump drawing 15 amps all the time heating the fuel.

 

[norbs]

Here is the sound of the fuel pump installed in my car as Promised.

YouTube - magnafuel fuel pump sound

 

[Louie L.]

I do agree that the Weldons warm up the fuel, but that is not just a function of the pump alone. I drove my 2015 on the street with no issues and it does not require a controller. Years ago when I had the 200 4r, I drove my GN 1.5 hr round trip to the Club meeting with no issues at all. This same pump took me 9.20s. That was the best fuel pump ive ever had. Just purchased a second one for my buddies car. Weldons customer support is awesome.

 

[karolko]

Norbs, i am assuming that the car was NOT running when you recorded this.

can you hear the pump when the car is running while inside the car?

 

[norbs]

No it was not running, its not bad in the car but you hear it a bit. I also have the pump mounted in some rubber but i need a better mount for better isolation.

Ill up load another quick vid.

YouTube - magnafuel in car sound

 

[Bent6]

I do agree that the Weldons warm up the fuel, but that is not just a function of the pump alone. I drove my 2015 on the street with no issues and it does not require a controller. Years ago when I had the 200 4r, I drove my GN 1.5 hr round trip to the Club meeting with no issues at all. This same pump took me 9.20s. That was the best fuel pump ive ever had. Just purchased a second one for my buddies car. Weldons customer support is awesome.

I'll second that. I run a Weldon 2015 on the street with a controller only to keep the noise and heat down - it would be fine without it. It's a little overkill for my current setup but plenty of room to grow. The Weldons get a bad rap as far as being streetable due to the noise but it's not that bad especially with a controller. Nice to have the piece of mind of knowing you have one of the best pumps there is supplying your engine. Jim @ Weldon is top-notch for customer service and is really knowledgeable about fuel systems.

 

[karolko]

i would love to run a weldon, but the price of one is too much, then ontop of that i would need a controller, well you get the idea.

Norbs, thank you for the videos, and you are right, it isn't that bad inside of the car. maybe a little louder thank my 340 walbro intake.

I am sure if you isolate the pump correctly, and possibly build some sort of a box around it, it could quieten it down even more.

I am sure the tone of the exhaust will overpower that humm.

Norbs, magnafuel pump are you running again?

 

[norbs]

Its the protuner 525 or mp-4302 pump rated 1000 hp. Now i think the flow is down since your actually flowing through the lines and the filter. I do have a -10 into the pump but it leaves the filter as -8 and i use a 10 micron filter, not a 40 micron filter. I can get the pump upgraded for $50-60 by magnafuel i miight just to that and go with the 1500 hp or 2000 version.

 

[karolko]

Norbs, your number are a little confusing to me: is this the inline pump or transevrsely mounted (air-cooled) one?

Have you donw alot of prolonged street driving on your pump???

Thanks alot. you are helping big time.

Adrian

 

[norbs]

No i just got the car on the road with this setup. The the pump on the car is for the inline pump, fuel flows through the pump to cool it.

 

[karolko]

you say you are using a 10 micron filter after the pump norbs, what brand are you using just out of curiosity?

how far away from the tank did you mount the pump and also is your pump above or below the bottom of your tank???

 

[norbs]

Its mounted above the tank slightly I am using a barry grant filter thats compatible with alky and fuel. I will get a pic of the install for you when i have more time. I am either going to sell the pump or put a volt booster on it and reflow it at 16 volts, It should double the flow i would imagine.

 

[karolko]

Norbs, what type of flow are you trying to acheive for your setup? what type of hp numbers are you putting down??

From the numbers i got from the boys at magnafuel they stated that at 14.4volts the pump would flow around 114gph, which i think is pretty good, although i have no basis for comparison.

 

[lazaris]

This is incorrect. I run the ProTuner 625 MP-4301 (1500hp). You are thinking of the ProStar 625 MP-4701. 2 different pumps. The ProStar 625 uses the same motor as the carbureted Prostar 500 which is very loud. I have driven mine for just over an hour in 1 trip. Fuel does run through my pump.

So i spoke to the boys at Magnafuel and i got some more information that i wanted to bring up on this conversation.

chasmat and lazaris, you guys are running the 625 pump, which is a transverse mounted gear pump. this pump does not have fuel running through the pump to cool the motor, instead it use AIR to cool to pump. Air as we know will not cool as good as a liquid can, and thus is not recommended for prolonged use. The benifit is that is will not heat up the fuel nearly as much as the inline PROTUNER pump that Magnafuel offers (MP-4301, 02, 03) 1000, 1500, 2000hp Respectively.

Both styles of pumps must run on 12.5V or more, so a step down is a no no.

So the option is this, run a inline fuel pump, and have a fuel cooler setup inline to cool the fuel so you are not increasing the overall temperature of the fuel as it is being circulated through the system.

What does everyone feel about fuel coolers. the only ones i have found are the ones at summit, but they are only -6 and i was hoping to use -8 for a return.

Also where should a fuel cooler be mounted if you can have one with a large enought inside diameter, Pre injectors, or on the return line??

I do not want to comprimise anything with this car, thus my anal-like questions and problems.

Thanks Boys.

Adrian

 

[karolko]

opps my appologies. thanks for the clarification. i knew this but it must have slipped into the back of my mind.

Adrian

 

[norbs]

I can;t put down any good HP numbers since I am out of fuel by 500HP @97% duty cycle on 83 lb injectors, and thats with 2 cyl's misfiring so far. Once i get my boost a pump connected i will reflow the pump.

 

[chasmat2316]

I have the protuner 625 mp4301 no problems driving also

 

[V6UnderPressure]

Nope its self cooling and can driven on the street no problem. It can also be mounted intank. The flow of the pump @80psi 14.5 volts is 110 gph At the rated 12.5 volts its still 85 GPH.

Lonnie, this pump looks affordable. Which one would you recommend for a 500-600hp car? The 18203??? What else is needed if running a stock fuel rail? Tips would be greatly appreciated as I am going external. Is this the one I'd want? SX Performance EFI & Carburated In-line Electric Fuel Pump :: SX Fuel Pumps :: SX Fuel Systems :: Fluid Systems Engineering

 

[karolko]

Norbs, How are you out of injectors at 500hp on 83#ers? i also bought 83# injectors, but think that you can get way more than only 500hp out of them.

I know there is going to be a wild card in your combo that makes yours very unique, but what the hell is it.

I am now afrain that mu upgrade to from 60's just isn't going to cut it for me either.

Thanks

 

[norbs]

Its a fuel flow problem for sure, The bg5000 filter could be the culprit or the -8an line, voltage issue at the pump. I am waiting for BG to get back to me to get the flow rate through that filter. I just picked up a boost a pump and have to reflow everything. Chew on these calculations for a while:

Stealth 316 - Injector Duty Cycle Calculation