fuel pump and injectors

Drgnracin72 · February 28th, 2006, 09:35 PM

hey ive been thinking a little bit now that my fuel pump is not going to be nearly sufficient for my build. i am going to be putting out well over 700 hp anyone have any ideas about fuls pumps and what size injectors to use? im pretty stumped as to what to use! will the fuls pumps form the svt focus work for this application or will i need something more stout, anyways ant info would be greatly appreciated!

Drgnracin72 · March 1st, 2006, 02:54 AM

would this be sufficient. and what fuel rails would yall suggest?

http://www.teamjdm.com/shop/product_...roducts_id=152

mdvaldosta · March 1st, 2006, 06:42 AM

You might be able to get close to 700hp out of the returnless system with a Cobra tank and pump swap and a BAP. I wouldn't try it though if your expecting over 600rwhp. You'll need to swap to a return style fuel system.

blown_97cobra · March 1st, 2006, 01:53 PM

If I were you I would talk to the folks at Kenne Belle and see if I could get enough fuel out of the pump you already have by using their Boost-A-Pump. I have heard a few people that use them say they work pretty good. I have aeromotive fuel rails on my mustang and they work nice. Sean Hyland uses 42lb injectors on a 675 horse engine so I would think they would work fine for you.

Drgnracin72 · March 1st, 2006, 07:35 PM

what exactly is the difference from the return fuel systme to the returnless. i was talking to a guy and he said his buddie is running that same fuel system i linked toearlier with rails and 60# injectors. and his buddie is putting down like 640 hp. and he said it works fine.thanx for the info and any more is greatly appreciated

blown_97cobra · March 1st, 2006, 08:29 PM

A Return Style fuel system has a return line going back to the fuel tank. On a returnless system your computer varies the voltage to your fuel pump to vary the amount of fuel pressure to your engine. This eliminates the need for a return line. I would seriously look at a boost-a-pump (http://www.kennebell.net/accessories...boostapump.htm) because it could potentially save you a lot of money. I ended up putting a jdm setup like you are looking at on my '97 cobra and I am wishing I hadn't now because I ended up spending a lot more money that I wanted to. If you don't think that will be enough capacity, then I would still go with the boost-a-pump and get an aftermarket in tank 210 lph fuel pump which would supply more than enough fuel and would still save you money. I don't know for sure what a GT has for a stock fuel pump, but i bet it would be good enough. Also since I am retarded and didn't read your post right, forget what I said about the 42 lb. injectors. I would go with 55 lb., as they would be good for well over 700 horsepower (http://www.rpmoutlet.com/musv8fuel.htm)

Drgnracin72 · March 1st, 2006, 08:41 PM

what is the point of the return line. is that if it sends to much fuel it can send it back?

blown_97cobra · March 1st, 2006, 08:46 PM

Yes, on my 97 cobra I have a return line because my computer doesn't vary the voltage to my fuel pump.

sstrayer · March 3rd, 2006, 11:35 PM

Lethal Performance has a kit but it's expensive plus the additional costs of the 03 cobra pumps and tank.

Here's just some thoughts...

- 03 Cobra pumps and tank
- 60lb injectors (drivability is very good with them)
- Fuel Rails & adapters
- Swap out cobra pumps for ford gt or aviator pumps
- Send out FPDM to MJchip, he'll modify it for $100. Your FPDM can suffer from thermal meltdown if you try to run two Ford GT or Aviator pumps.
- Upgraded -8an fuel line (when pushing 600rwhp)
- BAP
- MAF like SCT that support that type of power

If you search the 03/04 cobra forums like ModularFords and SVTperformance, there is a lot of really good info.

February 28th, 2006, 09:35 PM	#1
Drgnracin72 I Post Entirely Way Too Much Join Date: Jan 2006 Location: somewhere in oklahoma Posts: 10,635 iTrader: 2 reviews	fuel pump and injectors hey ive been thinking a little bit now that my fuel pump is not going to be nearly sufficient for my build. i am going to be putting out well over 700 hp anyone have any ideas about fuls pumps and what size injectors to use? im pretty stumped as to what to use! will the fuls pumps form the svt focus work for this application or will i need something more stout, anyways ant info would be greatly appreciated! __________________ RIP ΜΟΛΩΝ ΛΑΒΕ Political Correctness is a doctrine, fostered by a delusional, illogical, liberal minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end. One Big Ass Mistake America SHEEPDOGS

March 1st, 2006, 02:54 AM	#2
Drgnracin72 I Post Entirely Way Too Much Join Date: Jan 2006 Location: somewhere in oklahoma Posts: 10,635 iTrader: 2 reviews	would this be sufficient. and what fuel rails would yall suggest? http://www.teamjdm.com/shop/product_...roducts_id=152 __________________ RIP ΜΟΛΩΝ ΛΑΒΕ Political Correctness is a doctrine, fostered by a delusional, illogical, liberal minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end. One Big Ass Mistake America SHEEPDOGS

March 1st, 2006, 07:35 PM	#5
Drgnracin72 I Post Entirely Way Too Much Join Date: Jan 2006 Location: somewhere in oklahoma Posts: 10,635 iTrader: 2 reviews	what exactly is the difference from the return fuel systme to the returnless. i was talking to a guy and he said his buddie is running that same fuel system i linked toearlier with rails and 60# injectors. and his buddie is putting down like 640 hp. and he said it works fine.thanx for the info and any more is greatly appreciated __________________ RIP ΜΟΛΩΝ ΛΑΒΕ Political Correctness is a doctrine, fostered by a delusional, illogical, liberal minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end. One Big Ass Mistake America SHEEPDOGS

March 1st, 2006, 08:41 PM	#7
Drgnracin72 I Post Entirely Way Too Much Join Date: Jan 2006 Location: somewhere in oklahoma Posts: 10,635 iTrader: 2 reviews	what is the point of the return line. is that if it sends to much fuel it can send it back? __________________ RIP ΜΟΛΩΝ ΛΑΒΕ Political Correctness is a doctrine, fostered by a delusional, illogical, liberal minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end. One Big Ass Mistake America SHEEPDOGS

March 3rd, 2006, 11:35 PM	#9
sstrayer Newbie Join Date: Mar 2006 Location: San Diego Posts: 8 iTrader: 0 reviews	Lethal Performance has a kit but it's expensive plus the additional costs of the 03 cobra pumps and tank. Here's just some thoughts... - 03 Cobra pumps and tank - 60lb injectors (drivability is very good with them) - Fuel Rails & adapters - Swap out cobra pumps for ford gt or aviator pumps - Send out FPDM to MJchip, he'll modify it for $100. Your FPDM can suffer from thermal meltdown if you try to run two Ford GT or Aviator pumps. - Upgraded -8an fuel line (when pushing 600rwhp) - BAP - MAF like SCT that support that type of power If you search the 03/04 cobra forums like ModularFords and SVTperformance, there is a lot of really good info. __________________ Shaun Strayer Supercharged '99 GT Vert Kenne Bell 1.7

March 1st, 2006, 06:42 AM	#3
mdvaldosta MM Fanatic 2002 Mustang GT 11.47@120.58 Join Date: Aug 2005 Location: Valdosta, GA Posts: 3,940 iTrader: 0 reviews	You might be able to get close to 700hp out of the returnless system with a Cobra tank and pump swap and a BAP. I wouldn't try it though if your expecting over 600rwhp. You'll need to swap to a return style fuel system.

March 1st, 2006, 01:53 PM	#4
blown_97cobra Newbie Join Date: Feb 2006 Location: Manhattan, KS Posts: 5 iTrader: 0 reviews	If I were you I would talk to the folks at Kenne Belle and see if I could get enough fuel out of the pump you already have by using their Boost-A-Pump. I have heard a few people that use them say they work pretty good. I have aeromotive fuel rails on my mustang and they work nice. Sean Hyland uses 42lb injectors on a 675 horse engine so I would think they would work fine for you.

March 1st, 2006, 08:29 PM	#6
blown_97cobra Newbie Join Date: Feb 2006 Location: Manhattan, KS Posts: 5 iTrader: 0 reviews	A Return Style fuel system has a return line going back to the fuel tank. On a returnless system your computer varies the voltage to your fuel pump to vary the amount of fuel pressure to your engine. This eliminates the need for a return line. I would seriously look at a boost-a-pump (http://www.kennebell.net/accessories...boostapump.htm) because it could potentially save you a lot of money. I ended up putting a jdm setup like you are looking at on my '97 cobra and I am wishing I hadn't now because I ended up spending a lot more money that I wanted to. If you don't think that will be enough capacity, then I would still go with the boost-a-pump and get an aftermarket in tank 210 lph fuel pump which would supply more than enough fuel and would still save you money. I don't know for sure what a GT has for a stock fuel pump, but i bet it would be good enough. Also since I am retarded and didn't read your post right, forget what I said about the 42 lb. injectors. I would go with 55 lb., as they would be good for well over 700 horsepower (http://www.rpmoutlet.com/musv8fuel.htm)

March 1st, 2006, 08:46 PM	#8
blown_97cobra Newbie Join Date: Feb 2006 Location: Manhattan, KS Posts: 5 iTrader: 0 reviews	Yes, on my 97 cobra I have a return line because my computer doesn't vary the voltage to my fuel pump.

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