Fuel Pump MagneFuel Rebuild troubles...Need Help
#2909032
04/11/21 12:14 PM
04/11/21 12:14 PM
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Joined: May 2004
Posts: 12,476 Taxes & Virus's R-US, NY
Dragula
OP
I Live Here
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OP
I Live Here
Joined: May 2004
Posts: 12,476
Taxes & Virus's R-US, NY
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This fuel pump is killing me. Changed the seals twice, and it leaks out the weep hole and dumps the tank. Seal looked directional, so I flipped it, same issue......Last year it all started when the last day of racing, and it locked up in the stage lanes of round one....dumped the fuel tank in the lanes on hot pavement....Bearings were torched....Replaced everything and always the same issue..
Last edited by Dragula; 04/11/21 12:14 PM.
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Re: Fuel Pump MagneFuel Rebuild troubles...Need Help
[Re: AndyF]
#2909087
04/11/21 02:38 PM
04/11/21 02:38 PM
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Joined: Jan 2003
Posts: 19,537 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,537
Las Vegas
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Could always send it back to Magnfuel t be rebuilt. They have done a coupe for me and never an issue or much cost involved. One went through a fire in the Cuda the other came with the stratus when I bought it. Both were perfect after that
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Fuel Pump MagneFuel Rebuild troubles...Need Help
[Re: mopar dave]
#2909205
04/11/21 08:05 PM
04/11/21 08:05 PM
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Joined: Jan 2003
Posts: 11,786 Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,786
Portage,michigan
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I just bought and installed the Magnafuel 300 pump late last year. While driving a couple days ago, i noticed it seemed louder than i remembered last year. After the 30 minute drive and once back home, I felt the pump. It was very hot, hot to the point it was uncomfortable to keep my hand on it. I called Magnafuel and asked if that was normal for the pump to be that hot. They told me to check it with a temp gun and it should not be over 140* and 130*-140* is normal. Also, not to run for more than 1.5 hours at a time without shutting it off. I don't like that as i street drive alot and this is looking like a very unreliable pump. When it breaks, i will be replacing with something different. Never understood why people spend such huge dollars on those things specifically, and huge overkill on fuel systems in general. I got talked into( via peer pressure) taking a perfect working dead headed Holley black off a hard leaving legit 650 horse 9 sec street strip car, and put an expensive return style system/ much bigger pump on the car. It didn't run a thousandth of a second better than it ran for years with the black. I am sure the black would have supported even more power, as long as it gets good steady voltage
Last edited by B3422W5; 04/11/21 08:06 PM.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam, footbrake street/strip car Best so far, 10.32 1/4 1.41 best 60 foot 6.56 at 104.17
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Re: Fuel Pump MagneFuel Rebuild troubles...Need Help
[Re: B3422W5]
#2909227
04/11/21 08:52 PM
04/11/21 08:52 PM
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Joined: May 2004
Posts: 12,476 Taxes & Virus's R-US, NY
Dragula
OP
I Live Here
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OP
I Live Here
Joined: May 2004
Posts: 12,476
Taxes & Virus's R-US, NY
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Ok...So lets say I want to replace it, what else fits like it does? Had a feeling I needed a new pump. Was going to order a Magnafuel 300. An A1000 is my favorite, but I would have to replumb the whole car...
Last edited by Dragula; 04/11/21 08:54 PM.
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Re: Fuel Pump MagneFuel Rebuild troubles...Need Help
[Re: Dragula]
#2909271
04/11/21 09:54 PM
04/11/21 09:54 PM
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Joined: Feb 2005
Posts: 20,272 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,272
PA.
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If you guys know anyone getting rid of those junk BG400 pumps I know a guy that would be interested.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.38@138.67
Livin and lovin life one day at a time
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Re: Fuel Pump MagneFuel Rebuild troubles...Need Help
[Re: Dragula]
#2909356
04/12/21 06:48 AM
04/12/21 06:48 AM
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Joined: Dec 2016
Posts: 1,124 Usa
A39Coronet
super stock
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super stock
Joined: Dec 2016
Posts: 1,124
Usa
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One thing that confuses me.....Magnefuel 275gph rated for 750hp max, the 300 is rated at like 850hp and the Holley is 125gph and rated to 900hp... Those ratings are completely worthless. You need the volume graphs from the vendor if you really want to calculate anything. My Magnafuel gave me one hiccup in the six years I had it, performed flawlessly other than that. What filter do you have before the pump? Are the flange surfaces warped?
Last edited by A39Coronet; 04/12/21 06:52 AM.
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Re: Fuel Pump MagneFuel Rebuild troubles...Need Help
[Re: justinp61]
#2909389
04/12/21 09:54 AM
04/12/21 09:54 AM
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Joined: May 2004
Posts: 12,476 Taxes & Virus's R-US, NY
Dragula
OP
I Live Here
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OP
I Live Here
Joined: May 2004
Posts: 12,476
Taxes & Virus's R-US, NY
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I don't think I am over thinking it. I think I do not want to buy another Magnefuel based on the feedback here and have exactly the same failure in a year or two. I didn't realize so many others were having the same issue. Plus, I rebuilt it, and I seem to be missing somthing because its still leaking. And I will tell you what, having the pump fail is one thing, having fuel all over a hot car and pavement is another. It dumps the tank every time this happens.
So finding a suitable alternative is kinda my thinking at this point in the game, but I am not totally sure. When you look at flow numbers and rated HP and nothing makes sense when comparing manufacturers. What flow do I need to make sure 850hp is just fine? I know an A1000 will cover that, and at 4amps less current draw.....Its the only other BIG pump I have experience with. And it was so good, I sold my spare I had for almost 10 years. That style pump, just does not lend it self well to installing it in my Duster and its not just the price of the pump anymore. So I will call Magnefuel today and see if they can save my butt....Or maybe we try an A2000 pump....Not sure at this point. This sucks and I am almost out of time.
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Re: Fuel Pump MagneFuel Rebuild troubles...Need Help
[Re: Dragula]
#2909394
04/12/21 10:04 AM
04/12/21 10:04 AM
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Joined: Jan 2003
Posts: 19,537 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,537
Las Vegas
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Send me all those junk Magnafuels Ill take them off your hands.. AS for the best pumps out there call Weldon, the best stuff out there. Lots of price points as well.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Fuel Pump MagneFuel Rebuild troubles...Need Help
[Re: mopar dave]
#2909416
04/12/21 10:42 AM
04/12/21 10:42 AM
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Joined: Jan 2003
Posts: 19,537 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,537
Las Vegas
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We have Weldon stuff on all the racecars now. Nice when you can run the fuel pressure low and not see a drop or bobble in the pressure anywhere. My car and my sons dragster are both over 3g's at the hit and pressure doesn't move at all.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Fuel Pump MagneFuel Rebuild troubles...Need Help
[Re: Dragula]
#2909435
04/12/21 11:28 AM
04/12/21 11:28 AM
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Joined: Jan 2003
Posts: 11,786 Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,786
Portage,michigan
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I don't think I am over thinking it. I think I do not want to buy another Magnefuel based on the feedback here and have exactly the same failure in a year or two. I didn't realize so many others were having the same issue. Plus, I rebuilt it, and I seem to be missing somthing because its still leaking. And I will tell you what, having the pump fail is one thing, having fuel all over a hot car and pavement is another. It dumps the tank every time this happens.
So finding a suitable alternative is kinda my thinking at this point in the game, but I am not totally sure. When you look at flow numbers and rated HP and nothing makes sense when comparing manufacturers. What flow do I need to make sure 850hp is just fine? I know an A1000 will cover that, and at 4amps less current draw.....Its the only other BIG pump I have experience with. And it was so good, I sold my spare I had for almost 10 years. That style pump, just does not lend it self well to installing it in my Duster and its not just the price of the pump anymore. So I will call Magnefuel today and see if they can save my butt....Or maybe we try an A2000 pump....Not sure at this point. This sucks and I am almost out of time. What is the weight/ET/ MPH of the car making 850 horsepower
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam, footbrake street/strip car Best so far, 10.32 1/4 1.41 best 60 foot 6.56 at 104.17
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