Having trouble choosing a fuel system...
Thread Starter
!Dial-up Director
Joined: Nov 2001
Posts: 3,100
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From: Louisiana
Having trouble choosing a fuel system... What would be a good setup, fuel delivery, for my car ( Heads/Cam/Intake + 150 shot)?
1. How big (size) of a pump, injectors?
2. Intank or inline?
3. GAS? Is 104 Octane enough?
Thanks,
Justin
1. How big (size) of a pump, injectors?
2. Intank or inline?
3. GAS? Is 104 Octane enough?
Thanks,
Justin
I can shift faster than you.
iTrader: (21)
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From: Baton Rouge, LA
Re: Having trouble choosing a fuel system... Now we are talking... time to spray!! <img src="graemlins/fluffy.gif" border="0" alt="[Fluffy]" />
I assume you are going with the TNT wet kit. So, there will be no need to upgrade the injectors as the fuel will be sprayed in after the MAF. Your stock '98 injectors will be fine.
I would do the Walboro 340lph intank pump. This one is good for around ~580rwhp. I think ARE sells the pump and all the wiring harness needed for the install for around $180.
104 octane should be good enough. You will have to autotap to be sure. I would always run 104 octane when spraying that much of shot to be on the safe side.
You might want to save up for some 28" ET Drags/Hoosiers. <img src="gr_images/icons/wink.gif" border="0"> Can you say 130+ trap speeds. LOL
BTW, I want a ride. <img src="gr_tounge.gif" border="0">
[ February 25, 2002: Message edited by: Jason99T/A ]</p>
I assume you are going with the TNT wet kit. So, there will be no need to upgrade the injectors as the fuel will be sprayed in after the MAF. Your stock '98 injectors will be fine.
I would do the Walboro 340lph intank pump. This one is good for around ~580rwhp. I think ARE sells the pump and all the wiring harness needed for the install for around $180.
104 octane should be good enough. You will have to autotap to be sure. I would always run 104 octane when spraying that much of shot to be on the safe side.
You might want to save up for some 28" ET Drags/Hoosiers. <img src="gr_images/icons/wink.gif" border="0"> Can you say 130+ trap speeds. LOL
BTW, I want a ride. <img src="gr_tounge.gif" border="0">
[ February 25, 2002: Message edited by: Jason99T/A ]</p>
TECH Apprentice
Joined: Dec 2001
Posts: 351
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From: CA
Re: Having trouble choosing a fuel system... [quote]Originally posted by Jason99T/A:
<strong>I would do the Walboro 340lph intank pump. This one is good for around ~580rwhp. I think ARE sells the pump and all the wiring harness needed for the install for around $180.
[ February 25, 2002: Message edited by: Jason99T/A ]</strong><hr></blockquote>
Actually, it is just a 255lph high pressure pump, the model is GSS 34x. Maybe GSS 342? Someone else may be able to tell you.
So ARE sells the pump and wiring harness for $180? I didn't know you needed some kind of wiring harness. I bought mine for $130 or $140, forgot.
<strong>I would do the Walboro 340lph intank pump. This one is good for around ~580rwhp. I think ARE sells the pump and all the wiring harness needed for the install for around $180.
[ February 25, 2002: Message edited by: Jason99T/A ]</strong><hr></blockquote>
Actually, it is just a 255lph high pressure pump, the model is GSS 34x. Maybe GSS 342? Someone else may be able to tell you.
So ARE sells the pump and wiring harness for $180? I didn't know you needed some kind of wiring harness. I bought mine for $130 or $140, forgot.
I can shift faster than you.
iTrader: (21)
Joined: Nov 2001
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From: Baton Rouge, LA
Re: Having trouble choosing a fuel system... akw408: I had heard the same thing about the pumps being the same, but had never heard a definite answer. Thanks for letting me know.
Thread Starter
!Dial-up Director
Joined: Nov 2001
Posts: 3,100
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From: Louisiana
Re: Having trouble choosing a fuel system... Thanks for the info Jason. I've got a long list of all the stuff I need to do this right er safely. <img src="gr_stretch.gif" border="0"> This is going to be fun. <img src="gr_grin.gif" border="0">
Fuel Pump: I have heard that you need to run more voltage to the pump to get the flow out of it? How is this done? Harlan, Just Me?
Fuel Pump: I have heard that you need to run more voltage to the pump to get the flow out of it? How is this done? Harlan, Just Me?
TECH Apprentice
Joined: Dec 2001
Posts: 351
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From: CA
Re: Having trouble choosing a fuel system... [quote]Originally posted by Jason99T/A:
<strong>akw408: I had heard the same thing about the pumps being the same, but had never heard a definite answer. Thanks for letting me know.</strong><hr></blockquote>
Here is a page I saw about fuel pumps, it's written for 3SIs. But it tests a bunch of fuel pumps and has some nice graphs. You can see that for 60psi or below, the 255lph and 255lph high pressure don't make much difference.
http://www.geocities.com/lutransys/j...lpumpguide.htm
I cut and paste some info from that page here :
There are basically three models of Walbro pumps. For each of these three models there are three "sub-models" that differ only in the fuel line connection. The Walbro GSS242, GSS250, and GSS278 are 190 lph models. The Walbro GSS307, GSS315, and GSS317 are 255 lph models. The Walbro GSS340, GSS341, and GSS342 are 255 lph high-pressure models.
<strong>akw408: I had heard the same thing about the pumps being the same, but had never heard a definite answer. Thanks for letting me know.</strong><hr></blockquote>
Here is a page I saw about fuel pumps, it's written for 3SIs. But it tests a bunch of fuel pumps and has some nice graphs. You can see that for 60psi or below, the 255lph and 255lph high pressure don't make much difference.
http://www.geocities.com/lutransys/j...lpumpguide.htm
I cut and paste some info from that page here :
There are basically three models of Walbro pumps. For each of these three models there are three "sub-models" that differ only in the fuel line connection. The Walbro GSS242, GSS250, and GSS278 are 190 lph models. The Walbro GSS307, GSS315, and GSS317 are 255 lph models. The Walbro GSS340, GSS341, and GSS342 are 255 lph high-pressure models.
TECH Addict
Joined: Jan 2002
Posts: 2,950
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From: Magee MS
Re: Having trouble choosing a fuel system... Thats what I'm talking about Justin!!!!! I want to see some of these passes!!!!!! I think I would run a NX kit...... some people prefer TNT but the TNT is just a little better to set up and not so much clutter under the hood........ Either way you will have a great choice!!!!!! Talk to you guys later I am going to try and get up some money races with some mustangs cause I need to invest in some new car parts!!!!!! Holla Pimps!!!
Josh S.
Josh S.
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iTrader: (21)
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From: Baton Rouge, LA
Re: Having trouble choosing a fuel system... Justin, talk to Tim Creswell. He has installed 2 intank 255lph fuel pumps. He has some pictures of what needs to be modded. I'm sure with a 6-pack, he would help you put it in. <img src="gr_images/icons/wink.gif" border="0">
TECH Apprentice
Joined: Nov 2001
Posts: 339
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From: Indianapolis, IN
Re: Having trouble choosing a fuel system... well see the thing is about the wiring is the stock wiring to the fuel pump is real small gauge and over the length of the wire the voltage drops. Just by replacing the wiring with something larger you will have more flow from your intank. more voltage = more flow
