New Fuel System - Can It Be Done?
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From: Lewisville, TX
New Fuel System - Can It Be Done?
As I am sure a few people know, there is an identical hole into the fuel tank on the driver's side as the one where the stock pump and assembly sit on the passenger side. The part number from Nissan for the gasket, etc, are identical!
Why does this matter, and who cares, right.....?
If you purchased the stock assembly that holds the fuel pump and can be dropped into the tank, you could... theoretically run a pump on the driver's side, as well as a pump on the passenger's side of the car. A twin pump system capable of over 1,000 whp w/ 2 Walbro 255's.
Has anyone considered this, or thought about the consequences? It appears that monitoring the fuel level may be an issue, any others?
Why does this matter, and who cares, right.....?
If you purchased the stock assembly that holds the fuel pump and can be dropped into the tank, you could... theoretically run a pump on the driver's side, as well as a pump on the passenger's side of the car. A twin pump system capable of over 1,000 whp w/ 2 Walbro 255's.
Has anyone considered this, or thought about the consequences? It appears that monitoring the fuel level may be an issue, any others?
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From: MD
Funny you should mention this and interesting...The current issue of Sport Z mag has an interview with a 350Z Grand Am team. And the word was that the main problem due to raising our 350Zs above stock power is excessive rpms due to people raising the rev limiter and...an inconsistant fuel system with the stock setup.
Re: New Fuel System - Can It Be Done?
Originally posted by t32gzz
As I am sure a few people know, there is an identical hole into the fuel tank on the driver's side as the one where the stock pump and assembly sit on the passenger side. The part number from Nissan for the gasket, etc, are identical!
Why does this matter, and who cares, right.....?
If you purchased the stock assembly that holds the fuel pump and can be dropped into the tank, you could... theoretically run a pump on the driver's side, as well as a pump on the passenger's side of the car. A twin pump system capable of over 1,000 whp w/ 2 Walbro 255's.
Has anyone considered this, or thought about the consequences? It appears that monitoring the fuel level may be an issue, any others?
As I am sure a few people know, there is an identical hole into the fuel tank on the driver's side as the one where the stock pump and assembly sit on the passenger side. The part number from Nissan for the gasket, etc, are identical!
Why does this matter, and who cares, right.....?
If you purchased the stock assembly that holds the fuel pump and can be dropped into the tank, you could... theoretically run a pump on the driver's side, as well as a pump on the passenger's side of the car. A twin pump system capable of over 1,000 whp w/ 2 Walbro 255's.
Has anyone considered this, or thought about the consequences? It appears that monitoring the fuel level may be an issue, any others?
Originally posted by Z1 Performance
but then you have the added expense/complixity of running 2 sets of returns, plus an additional feed line into the engine bay as well
but then you have the added expense/complixity of running 2 sets of returns, plus an additional feed line into the engine bay as well
Couldn't you always run just run two lines from the tank then Y them into one large line and have that go to the fuel rail, then return with one that Y's back to two. Not sure if one large line would cause a problem with pressure or not, just thought I would give a few extra ideas.
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I already have the system working, fuel gauge sensoring worked out no problem. I even have a box full of the electrical connectors to build the plug and play wiring harness for this.
Doing it is not the problem, doing it right is. To just simply stick another pump on that side would get you twin pumps working... but you have lots of concern to work out with the tank remaining level so that neither pump runs dry in any situation. this is what i am still testing. most people do not understand the complexity of the divided fuel tank.
wish you didnt say anything about it yet... My plan was to finish my website and then sponsor this site starting with the release of this system after testing was complete.
-charles
Doing it is not the problem, doing it right is. To just simply stick another pump on that side would get you twin pumps working... but you have lots of concern to work out with the tank remaining level so that neither pump runs dry in any situation. this is what i am still testing. most people do not understand the complexity of the divided fuel tank.
wish you didnt say anything about it yet... My plan was to finish my website and then sponsor this site starting with the release of this system after testing was complete.
-charles
Last edited by phunk; Dec 30, 2004 at 10:13 PM.
Originally posted by phunk
I already have the system working, fuel gauge sensoring worked out no problem. I even have a box full of the electrical connectors to build the plug and play wiring harness for this.
Doing it is not the problem, doing it right is. To just simply stick another pump on that side would get you twin pumps working... but you have lots of concern to work out with the tank remaining level so that neither pump runs dry in any situation. this is what i am still testing. most people do not understand the complexity of the divided fuel tank.
wish you didnt say anything about it yet... My plan was to finish my website and then sponsor this site starting with the release of this system after testing was complete.
-charles
I already have the system working, fuel gauge sensoring worked out no problem. I even have a box full of the electrical connectors to build the plug and play wiring harness for this.
Doing it is not the problem, doing it right is. To just simply stick another pump on that side would get you twin pumps working... but you have lots of concern to work out with the tank remaining level so that neither pump runs dry in any situation. this is what i am still testing. most people do not understand the complexity of the divided fuel tank.
wish you didnt say anything about it yet... My plan was to finish my website and then sponsor this site starting with the release of this system after testing was complete.
-charles
unfortunatly its not that simple. we are looking at a few different methods.
you must understand that the fuel feed pipe is not centered. if you go and put 2 gallons of gas in your car acuse you only have 5 dollars on ya... then the passenger side will be much higher then the driver side... your guage averages the two, and then you run the drivers side pump dry and it fries.
I am doing what I can and testing different layouts and scenarios to figure out what the most successful method will be. I do beleive that it will be impossible to promise it to be perfect any any circumstances what so ever... so I am working out some electronics for this to make it as plug and play as possible and also include a warning light. I am gonna hve it so that if one side is getting dangerously low a warning will tell you so that you can top off the tank ASAP... and topping off the tank essentially will reset the levels by bringing them both up to the top. I am also considering some other more complicated methods to keep it equal but I need to try and make this inexpensive for you guys.
at CJ Motorsports we are currently doing R&D on the ultimate in fuel systems for the 350z. We know this part of this car better than anyone now and we are gonna make it the best. We are currently finishing up the single pump fuel system which will be good for very high HP already, and the twin pump kit will be available as an upgrade for those that surpass the single pump kit, without having to buy anything twice it will simply pick up where the single left off. We are also building components that will compliment the fuel systems by other manufacturers that you mgiht already have, and pick up where they left off... once again without having to buy anything twice.
you must understand that the fuel feed pipe is not centered. if you go and put 2 gallons of gas in your car acuse you only have 5 dollars on ya... then the passenger side will be much higher then the driver side... your guage averages the two, and then you run the drivers side pump dry and it fries.
I am doing what I can and testing different layouts and scenarios to figure out what the most successful method will be. I do beleive that it will be impossible to promise it to be perfect any any circumstances what so ever... so I am working out some electronics for this to make it as plug and play as possible and also include a warning light. I am gonna hve it so that if one side is getting dangerously low a warning will tell you so that you can top off the tank ASAP... and topping off the tank essentially will reset the levels by bringing them both up to the top. I am also considering some other more complicated methods to keep it equal but I need to try and make this inexpensive for you guys.
at CJ Motorsports we are currently doing R&D on the ultimate in fuel systems for the 350z. We know this part of this car better than anyone now and we are gonna make it the best. We are currently finishing up the single pump fuel system which will be good for very high HP already, and the twin pump kit will be available as an upgrade for those that surpass the single pump kit, without having to buy anything twice it will simply pick up where the single left off. We are also building components that will compliment the fuel systems by other manufacturers that you mgiht already have, and pick up where they left off... once again without having to buy anything twice.
Last edited by phunk; Dec 31, 2004 at 02:14 PM.
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From: Lewisville, TX
Charles, I honestly had no idea that you were working on a twin pump set up with the pumps on opposite sides of the car... oops!
Sorry to let the cat out of the bag.... but... thanks for always being one step ahead. The fuel system has always been my primary concern on this car, and thanks to you, I will soon be able to sleep well at night ; )
Sorry to let the cat out of the bag.... but... thanks for always being one step ahead. The fuel system has always been my primary concern on this car, and thanks to you, I will soon be able to sleep well at night ; )
Originally posted by phunk
unfortunatly its not that simple. we are looking at a few different methods.
you must understand that the fuel feed pipe is not centered. if you go and put 2 gallons of gas in your car acuse you only have 5 dollars on ya... then the passenger side will be much higher then the driver side... your guage averages the two, and then you run the drivers side pump dry and it fries.
I am doing what I can and testing different layouts and scenarios to figure out what the most successful method will be. I do beleive that it will be impossible to promise it to be perfect any any circumstances what so ever... so I am working out some electronics for this to make it as plug and play as possible and also include a warning light. I am gonna hve it so that if one side is getting dangerously low a warning will tell you so that you can top off the tank ASAP... and topping off the tank essentially will reset the levels by bringing them both up to the top. I am also considering some other more complicated methods to keep it equal but I need to try and make this inexpensive for you guys.
at CJ Motorsports we are currently doing R&D on the ultimate in fuel systems for the 350z. We know this part of this car better than anyone now and we are gonna make it the best. We are currently finishing up the single pump fuel system which will be good for very high HP already, and the twin pump kit will be available as an upgrade for those that surpass the single pump kit, without having to buy anything twice it will simply pick up where the single left off. We are also building components that will compliment the fuel systems by other manufacturers that you mgiht already have, and pick up where they left off... once again without having to buy anything twice.
unfortunatly its not that simple. we are looking at a few different methods.
you must understand that the fuel feed pipe is not centered. if you go and put 2 gallons of gas in your car acuse you only have 5 dollars on ya... then the passenger side will be much higher then the driver side... your guage averages the two, and then you run the drivers side pump dry and it fries.
I am doing what I can and testing different layouts and scenarios to figure out what the most successful method will be. I do beleive that it will be impossible to promise it to be perfect any any circumstances what so ever... so I am working out some electronics for this to make it as plug and play as possible and also include a warning light. I am gonna hve it so that if one side is getting dangerously low a warning will tell you so that you can top off the tank ASAP... and topping off the tank essentially will reset the levels by bringing them both up to the top. I am also considering some other more complicated methods to keep it equal but I need to try and make this inexpensive for you guys.
at CJ Motorsports we are currently doing R&D on the ultimate in fuel systems for the 350z. We know this part of this car better than anyone now and we are gonna make it the best. We are currently finishing up the single pump fuel system which will be good for very high HP already, and the twin pump kit will be available as an upgrade for those that surpass the single pump kit, without having to buy anything twice it will simply pick up where the single left off. We are also building components that will compliment the fuel systems by other manufacturers that you mgiht already have, and pick up where they left off... once again without having to buy anything twice.
Originally posted by phunk
unfortunatly its not that simple. we are looking at a few different methods.
you must understand that the fuel feed pipe is not centered. if you go and put 2 gallons of gas in your car acuse you only have 5 dollars on ya... then the passenger side will be much higher then the driver side... your guage averages the two, and then you run the drivers side pump dry and it fries.
I am doing what I can and testing different layouts and scenarios to figure out what the most successful method will be. I do beleive that it will be impossible to promise it to be perfect any any circumstances what so ever... so I am working out some electronics for this to make it as plug and play as possible and also include a warning light. I am gonna hve it so that if one side is getting dangerously low a warning will tell you so that you can top off the tank ASAP... and topping off the tank essentially will reset the levels by bringing them both up to the top. I am also considering some other more complicated methods to keep it equal but I need to try and make this inexpensive for you guys.
at CJ Motorsports we are currently doing R&D on the ultimate in fuel systems for the 350z. We know this part of this car better than anyone now and we are gonna make it the best. We are currently finishing up the single pump fuel system which will be good for very high HP already, and the twin pump kit will be available as an upgrade for those that surpass the single pump kit, without having to buy anything twice it will simply pick up where the single left off. We are also building components that will compliment the fuel systems by other manufacturers that you mgiht already have, and pick up where they left off... once again without having to buy anything twice.
unfortunatly its not that simple. we are looking at a few different methods.
you must understand that the fuel feed pipe is not centered. if you go and put 2 gallons of gas in your car acuse you only have 5 dollars on ya... then the passenger side will be much higher then the driver side... your guage averages the two, and then you run the drivers side pump dry and it fries.
I am doing what I can and testing different layouts and scenarios to figure out what the most successful method will be. I do beleive that it will be impossible to promise it to be perfect any any circumstances what so ever... so I am working out some electronics for this to make it as plug and play as possible and also include a warning light. I am gonna hve it so that if one side is getting dangerously low a warning will tell you so that you can top off the tank ASAP... and topping off the tank essentially will reset the levels by bringing them both up to the top. I am also considering some other more complicated methods to keep it equal but I need to try and make this inexpensive for you guys.
at CJ Motorsports we are currently doing R&D on the ultimate in fuel systems for the 350z. We know this part of this car better than anyone now and we are gonna make it the best. We are currently finishing up the single pump fuel system which will be good for very high HP already, and the twin pump kit will be available as an upgrade for those that surpass the single pump kit, without having to buy anything twice it will simply pick up where the single left off. We are also building components that will compliment the fuel systems by other manufacturers that you mgiht already have, and pick up where they left off... once again without having to buy anything twice.
keep up the good work
t32gzz: Its all good man... ill have it all done probably next week anyway. Actually all that is left is for me to buy the stock of supplies needed for assembly, and then brandon needs to finish writing the program for the fuel rails.
g356gear: the pricing will be competitive but a little higher than our competitor... this is due to a more complete system with significantly more parts... when we are ready to ship them and victor has setup my sponsorship i will go over the details on what makes it worth the extra $$ and what extra stuff you get.
I will need a G Sedan and Coupe to take some measurements off of before I can do those cars... but that will be easy I have access to both.
g356gear: the pricing will be competitive but a little higher than our competitor... this is due to a more complete system with significantly more parts... when we are ready to ship them and victor has setup my sponsorship i will go over the details on what makes it worth the extra $$ and what extra stuff you get.
I will need a G Sedan and Coupe to take some measurements off of before I can do those cars... but that will be easy I have access to both.
Last edited by phunk; Jan 1, 2005 at 03:25 PM.
phunk...I already have the AAM return system in place . Are you going to be selling just the in tank portion of your set up ? And will I be able to keep the walbro pump already in place ?
the pump will not be part of our kit, it will be something available seperate so that people that already have the pump wont have to buy it twice. yes our kit will be available in several pieces or available as an entire system.
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