separate fuel pump?
Thread Starter
Racer
Joined: Feb 2004
Posts: 432
Likes: 0
From: topeka ks
separate fuel pump?
i am trying to install a direct port nitrous system in my 03 z06. i plan on trying to run a 200 (or close to it) shot on an otherwise mostly stock motor. in order to prevent fuel starvation from happening i was thinking about a separate "fuel system" that really consisted of no more than an auxillary fuel pump that was armed when the n2o system was armed and pumped straight to the fuel solonoids. i'm new to the game, but have decided that i wand to do everything to my car on my own, but that means that i am not often armed with the proper know how. would this proposed task be as simple as i am thinking?
would i just run another line into my gas tank, put an inline fuel pump between the tank and the fuel solonoid, and allow the solonoid to turn the flow on and off?
is there such a thing as an inline fuel pump?
would i need a fuel pressure regulator before the solonoid?
i guess maybe i dont even know how a fuel pump really works, so does the pump run till it builds up 60 psi (or whatever) and then stop until pressure is relieved, or what?
if someone sees that im going in completely the wrong direction, please be so kind as to give it to me straight
thanks
peace out
would i just run another line into my gas tank, put an inline fuel pump between the tank and the fuel solonoid, and allow the solonoid to turn the flow on and off?
is there such a thing as an inline fuel pump?
would i need a fuel pressure regulator before the solonoid?
i guess maybe i dont even know how a fuel pump really works, so does the pump run till it builds up 60 psi (or whatever) and then stop until pressure is relieved, or what?
if someone sees that im going in completely the wrong direction, please be so kind as to give it to me straight
thanks
peace out
Le Mans Master
Joined: Aug 2001
Posts: 7,064
Likes: 18
From: Arizona
Re: separate fuel pump? (cnationshb)
There is two thoughts here.
1. You can add a stand alone fuel system with a separate fuel tank, pump, and regulator. This was you can have 100+ octane race fuel in the fuel cell for when you are spraying.
2. The 03 fuel pumps is a jet style pump. It is difficult to upgrade since it is a jet style, not a traditional gear driven pump. I think you can add a boost a pump, but you may want to check with one of the tuners.
1. You can add a stand alone fuel system with a separate fuel tank, pump, and regulator. This was you can have 100+ octane race fuel in the fuel cell for when you are spraying.
2. The 03 fuel pumps is a jet style pump. It is difficult to upgrade since it is a jet style, not a traditional gear driven pump. I think you can add a boost a pump, but you may want to check with one of the tuners.
Burning Brakes
Joined: Apr 2003
Posts: 788
Likes: 15
From: Martinsville, Indiana
Re: separate fuel pump? (cnationshb)
It was my understanding that the 2003 Vettes built before Thanksgiving of 2002 still used the old style pump. Do you know when your Vette was built? If it was before November of 2002, buy a Racetronix and BAP. Alot of the people on here with FI and nitrous use that route. Good luck! 
Supporting Vendor
Joined: Dec 2001
Posts: 1,573
Likes: 31
From: A dealer near you.
Re: separate fuel pump? (Indiana Z06)
To take the guess work out of determining which style tank & fuel module your have take a look behind the driver's side rear wheel. If you see a yellow connector with some lines hiding behind the metal shield then you are in luck. If not well...
The 97-2002 pumps are gerotor jet pumps. The newer pumps are vane type with a venturi supply.
The 97-2002 pumps are gerotor jet pumps. The newer pumps are vane type with a venturi supply.
Thread Starter
Racer
Joined: Feb 2004
Posts: 432
Likes: 0
From: topeka ks
Re: separate fuel pump? (cnationshb)
the reason i was thinking 2nd pump was this: i would only activate the pump during nitrous activation. this pump would only run gas to the nitrous nozzles and would never mess with the stock fuel rails. everything would run like stock off of stock parts until i arm my n2o system and then the pump only pumps during nitrous injection.
Le Mans Master
Joined: Aug 2001
Posts: 7,064
Likes: 18
From: Arizona
Re: separate fuel pump? (cnationshb)
Even if you added a boost a pump it would still drive like stock since the 2000 and up have the regulator internally. Fuel pressure will remain at 58# or so even with a boost a pump. The only difference is your fuel pressure will not drop as much with a new pump under heavy load.
Pro
Joined: Sep 2002
Posts: 748
Likes: 0
From: NC
Re: separate fuel pump? (cnationshb)
I will be installing NOS's Nozzle system shortly (was supposed to be a winter project).
After alot of forum surfing I decided on a stand alone system. I will be mounting a small (1) gallon fuel cell behind the drivers side front quarter panel (where Vortech puts there SC water tank).
This will allow precise tuning of the AF ratio via a regulator and the ability to use high octane fuel and greatly reduce chance of detonation
LOL
brad
After alot of forum surfing I decided on a stand alone system. I will be mounting a small (1) gallon fuel cell behind the drivers side front quarter panel (where Vortech puts there SC water tank).
This will allow precise tuning of the AF ratio via a regulator and the ability to use high octane fuel and greatly reduce chance of detonation
LOL
brad
Melting Slicks
Joined: Mar 2002
Posts: 2,931
Likes: 2
From: Tx
Re: separate fuel pump? (bogielake)
I'm not a n20 guy, but I think I can answer some of your questions.
You will need a regulator if you run a seperate fuel system. Inline pumps only work on systems that are already regulated and have a sump/intank pump of some sort. Most pumps cannot regulate, the run all out the entire time they are on.
I've heard a seperate fuel system is a very good way to go. I've also heard that the n20 jets work much better at a lower fuel pressure (something like 43psi). An isolated system would allow you to have a completely different pressure than what is on the normal rail. The other advantage would be the ability to run race gas in an isolated cell. You should check with Chris at ECS (east coast supercharging). He has a setup where the fuel cell sits where the battery normally resides.
A 200 shot seems a little crazy for someone in your situation. Start out slow and work your way up. There is a lot of stuff that can go wrong and the stock motor is going to be on the edge with that much juice.
Good luck and take it slow.
[Modified by QuickSilver2002, 11:40 AM 5/1/2004]
You will need a regulator if you run a seperate fuel system. Inline pumps only work on systems that are already regulated and have a sump/intank pump of some sort. Most pumps cannot regulate, the run all out the entire time they are on.
I've heard a seperate fuel system is a very good way to go. I've also heard that the n20 jets work much better at a lower fuel pressure (something like 43psi). An isolated system would allow you to have a completely different pressure than what is on the normal rail. The other advantage would be the ability to run race gas in an isolated cell. You should check with Chris at ECS (east coast supercharging). He has a setup where the fuel cell sits where the battery normally resides.
A 200 shot seems a little crazy for someone in your situation. Start out slow and work your way up. There is a lot of stuff that can go wrong and the stock motor is going to be on the edge with that much juice.
Good luck and take it slow.
[Modified by QuickSilver2002, 11:40 AM 5/1/2004]
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