Underboost
Mr. Dull
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I had the Accufab/Kenne Bell "same thing" reg with a Red Armstrong Dbl Pump and the car ran 10.12 @ 134 on one of the pumps. I didn't have the second pump hooked up to the hob switch yet.
Magnafuel External fuel pumps
- Thread starter karolko
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I had the Accufab/Kenne Bell "same thing" reg with a Red Armstrong Dbl Pump and the car ran 10.12 @ 134 on one of the pumps. I didn't have the second pump hooked up to the hob switch yet.
Yes, you can use the Accufab/Kenne Bell so long as you upgrade the return. That's the relief restriction - not the regulator itself.
Brent,
Are you saying that 1 walbro 340 took you to 134mph? what type of boost, turbo, and injectors? thanks.
Brent,
Are you saying that 1 walbro 340 took you to 134mph? what type of boost, turbo, and injectors? thanks.
If you want a pump that flows like a fire hose and if mounted properly is as quiet as a mouse the 18207 SX. There are TSM guys ruinning high to mid 9s with them.
SX Performance Fuel Pumps
SX Performance Fuel Pumps
Chrisk
TurboTransAm.com
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- Apr 12, 2005
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Lonnie,
Does this pump require a controller for street driving??
Does this pump require a controller for street driving??
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.
Dusty Bradford
Well-Known Member
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- May 24, 2001
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The thing to watch with high out-put pumps on the street is how hot the fuel gets. The SX will be fine but something like the large magna fuel and weldons will really put the heat into the fuel. It can get into vapor lock in 30-45 minutes of driving.
The voltage controllers do help protect the pump motor but the fuel temp is something to be just as worried about. A large pump circulating a ton of fuel to the rails and back with get the fuel too hot.
The voltage controllers do help protect the pump motor but the fuel temp is something to be just as worried about. A large pump circulating a ton of fuel to the rails and back with get the fuel too hot.
dusty,
when speaking to the boys at magnafuel, they mentioned to me that since the fuel is used to cool the pump, the fuel will become heated. he also mentioned that if i run a fuel cooler or if i run with a full tank of gas i should be okay.
that does not sound too cool to me.
what type of fuel pumps exist that will not heat up the fuel???
when speaking to the boys at magnafuel, they mentioned to me that since the fuel is used to cool the pump, the fuel will become heated. he also mentioned that if i run a fuel cooler or if i run with a full tank of gas i should be okay.
that does not sound too cool to me.
what type of fuel pumps exist that will not heat up the fuel???
the factory in tank pump uses the fuel to cool the pump. The heat generated from cooling of the pump is minimal. Dusty is talking about pressure and volume that is regulated and returned to tank. Example if you have a pump that flows 120gph and you only use 5gph. The additional fuel will be pressurized and returned many times over. This will heat the fuel more so than cooling of the fuel pump.
Dusty Bradford
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Just like Lonnie said. The issue is that any pump that will support 1000+hp will heat the fuel up just because it pumps it at high volume and pressure. It's just running in circles from the pump to the regulator and back to the tank and it's doing this at a much higher flow rate than a factory pump. This alone puts alot of heat in the fuel.
You can start with a full tank of gas and help the situation. You can ride for 45 minutes but would have to park and let the fuel cool. This isn't fun and is what I had to do with my Weldon.
For a pump supporting big power I recommend a voltage controller for the street just to slow the pump down which will keep the fuel cool.
You can start with a full tank of gas and help the situation. You can ride for 45 minutes but would have to park and let the fuel cool. This isn't fun and is what I had to do with my Weldon.
For a pump supporting big power I recommend a voltage controller for the street just to slow the pump down which will keep the fuel cool.
I run a Weldon 2015 pulling fuel from a stock location tank. -08 to Champion rails, Aeromotive regulator remotely mounted on fender and -06 return to tank. I use an Aeromotive pump controller to keep the fuel cool as mentioned. Noisy - yes, but plenty of room to grow and no chance of fuel starvation. It is hard to get a street race with a Weldon out back though 
:biggrin:
:biggrin:
GNVYUS 1
Well-Known Member
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- Dec 15, 2002
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Agree with the fuel heating up comments which is why anything bigger than the Magna 525 is silly for us, around 800hp Forced Induction. Also a lot of guys who have fueling vapor lock issues have the pump near the cell in the trunk and run Aeromotives.
If you plan on using the stock reg, the -6 is plenty as the real problem is the regulators inside diameter, it's not very big, check it out when you take it off the rail. I'd personally run the stock reg with a -6 first, if it doesn't get the base pressure down to say 43psi then Turbofabricators fitting with an external will and the -6 will be fine. If you're not on a tight budget then just go external right away.
If you plan on using the stock reg, the -6 is plenty as the real problem is the regulators inside diameter, it's not very big, check it out when you take it off the rail. I'd personally run the stock reg with a -6 first, if it doesn't get the base pressure down to say 43psi then Turbofabricators fitting with an external will and the -6 will be fine. If you're not on a tight budget then just go external right away.
Underboost
Mr. Dull
- Joined
- Oct 4, 2005
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- 4,277
Yes! Running one pump of the two! XP not walbro 72lb inj GTQ70 85.housing non BB 28psi Stock Iron ported heads race gas TT chip no alky stock stroke 20 over JE's.
the problem with running a magnafuel fule pump and a voltage controller is that the magnafuel pumps are made to run at a minimum volate of 12.5v, which does not leave alot of room for the pump to be stepped down.
GNVYUS, the 525 pump you mentioned is that the smallest pro tuner model tht handles 1000hp naturally apsirated?
if you guys say that the in tank fule pumps heat the fuel as well, and there is a direct correlation between about of fuel pumped and heat created, then what does a double pumper flow, and how much does that heat up the fuel and how much does it flow?
i am on a budget, but i do not want to buy crap parts, that is why i am considering the magnafuel, (mainly becasue i do not need a stepdown for the street), but i do not want to buy something that just won't work.
GNVYUS, the 525 pump you mentioned is that the smallest pro tuner model tht handles 1000hp naturally apsirated?
if you guys say that the in tank fule pumps heat the fuel as well, and there is a direct correlation between about of fuel pumped and heat created, then what does a double pumper flow, and how much does that heat up the fuel and how much does it flow?
i am on a budget, but i do not want to buy crap parts, that is why i am considering the magnafuel, (mainly becasue i do not need a stepdown for the street), but i do not want to buy something that just won't work.
chasmat2316
Well-Known Member
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- Nov 7, 2006
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Protuner 625 here no problems with street driving so far
Ditto to Lonnie and Dusty on the vapor locking.
Karolko,
If you stick to the magnafuel 4301 like Laz is using. And you mount it properly, it will be quiet enough and move plenty of fuel. I can't see using anything beyond the 4303.. unless you want to just "say" how big your pump is.
I talked to magnafuel and went with the 4301 (or 4303..I can't remember). Didn't have a problem at all driving across Dallas in 100+ deg heat. 1 hour round trips. The pump is designed to cool with fuel moving through it (unlike the larger magnafuels), and it has supported Laz's times as well as 115mph in the 1/8th on my old stage motor.
AND it's a cheap pump compared to the others.. I didn't price the SX pump though. I'm not a rep.
Karolko,
If you stick to the magnafuel 4301 like Laz is using. And you mount it properly, it will be quiet enough and move plenty of fuel. I can't see using anything beyond the 4303.. unless you want to just "say" how big your pump is.
I talked to magnafuel and went with the 4301 (or 4303..I can't remember). Didn't have a problem at all driving across Dallas in 100+ deg heat. 1 hour round trips. The pump is designed to cool with fuel moving through it (unlike the larger magnafuels), and it has supported Laz's times as well as 115mph in the 1/8th on my old stage motor.
AND it's a cheap pump compared to the others.. I didn't price the SX pump though. I'm not a rep.
chasmat and lazaris, do you boys run you cars on the street for prolonged times? 1-2 hours? or for long road trips?
my fear is spending all this work to cool my charged air and alky only to have this heated fuel counter all the other stuff.
my fear is spending all this work to cool my charged air and alky only to have this heated fuel counter all the other stuff.
I will try and record the sound of my pump for you. I maybe pulling it out of the car also if it does Also not flow enough fuel and see whats up with it, something is causing my injectors to max out with 500 hp, which is impossible. The magnafuel pumps are e85 compatible but the aeromotive pumps are not.
GNVYUS 1
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Ya 525 is good to 1000hp Naturally Aspirated and these pumps will take E85.
I think it's $440 through Summit but I'd also consider having Turbofabricator mod the stock hanger for the Bosch 044 pump, that pumps a beast and $190.
I think it's $440 through Summit but I'd also consider having Turbofabricator mod the stock hanger for the Bosch 044 pump, that pumps a beast and $190.
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
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
