V8 tj question - fuel related - Pirate4x4.Com : 4x4 and Off-Road Forum

JeepNatzi#2 · 10-24-2008, 05:32 AM

~~yes, i searched~~

i have a vortec 5.3 from a 2001 silverado in a 97 tj. As of now, everything is turn key.

I am getting ready to put in a rci2161 and external pump and have 2 questions

#1 will the fuel rail act as a pressure regulator and feed the injectors enough fuel with out pushing too much through or will i need a regulator?

#2 should i run an e2000 pump, if not what is recommended and why

thanks

JeepNatzi#2 · 10-25-2008, 07:29 AM

ttt

Dookey · 10-25-2008, 07:34 AM

The fuel rail will not "act" as a pressure regulator. Only a pressure regulator can do that. I'm not familiar with the 5.3 rail but it should be similar to my 6.0 which has a fuel pressure regulator on the drivers side rail.

You should NOT run the E2000 fuel pump. You should run the E8248. It is the same size, roughly the same price, is capable to feed enough pressure, but flows twice the volume as the E2000. My E2000 was starving my LT1.

The only real problem with running an inline fuel pump is keeping fuel at the pump. I'm running a sump and on some steep climbs there can be problems if I drop below a half tank of fuel. It is best to run an in tank pump to minimize those problems. Or use a low pressure pump in the tank to keep fuel at the E8248. Pumps do a great job of pumping fuel. They do not suck it out of the tank very well.

JeepNatzi#2 · 10-25-2008, 10:07 AM

what are you running in your tank?

If i understand correctly, the rail will kick down the pressure w/o the need for a regulator, right?

thanks dookey!

Dookey · 10-25-2008, 10:47 AM

I'm not running anything in the tank. That's why I've been having problems. I need to find a different cell setup first. The fuel rail regulator should keep the required pressure on the rail so there is no need for an extrenal FPR.

Lots of guys like to use fuel pickups inside the tank. I don't know if they don't have problems since I've never used that setup. If the pick ups are always submerged I don't know if that is how people are keeping fuel at their pump. I still don't like the thought that the pump has to draw fuel. I'd rather something feed it.

JeepNatzi#2 · 11-04-2008, 07:43 AM

What if i through the stock tj pump in the tank, it already works ok. That will take care of the sump aspect. As well as "push" it out of the cell.

than also run an inline pump to ensure i have adaquite pressure to the rail.

I assume the $100 for the ring will be a headach savings in the long run as it will keep me from gathering more parts as well as keep my gauge working.

Am i on the right page now?

10-24-2008, 05:32 AM	#1 (permalink)
JeepNatzi#2 Registered User Join Date: Mar 2006 Member # 69767 Location: IL Posts: 772	V8 tj question - fuel related ~~yes, i searched~~ i have a vortec 5.3 from a 2001 silverado in a 97 tj. As of now, everything is turn key. I am getting ready to put in a rci2161 and external pump and have 2 questions #1 will the fuel rail act as a pressure regulator and feed the injectors enough fuel with out pushing too much through or will i need a regulator? #2 should i run an e2000 pump, if not what is recommended and why thanks __________________ Hauler: 01 Powerstroke ExCab 6"Stacks 4" Lift Krawler: 97 TJ 5.3 V8 42" Iroks Dana 60's Atlas

10-25-2008, 07:29 AM	#2 (permalink)
JeepNatzi#2 Registered User Join Date: Mar 2006 Member # 69767 Location: IL Posts: 772	ttt __________________ Hauler: 01 Powerstroke ExCab 6"Stacks 4" Lift Krawler: 97 TJ 5.3 V8 42" Iroks Dana 60's Atlas

10-25-2008, 07:34 AM	#3 (permalink)
Dookey GM at TWF Join Date: Oct 2003 Member # 23680 Location: Wichita, KS Posts: 7,301 Blog Entries: 1	The fuel rail will not "act" as a pressure regulator. Only a pressure regulator can do that. I'm not familiar with the 5.3 rail but it should be similar to my 6.0 which has a fuel pressure regulator on the drivers side rail. You should NOT run the E2000 fuel pump. You should run the E8248. It is the same size, roughly the same price, is capable to feed enough pressure, but flows twice the volume as the E2000. My E2000 was starving my LT1. The only real problem with running an inline fuel pump is keeping fuel at the pump. I'm running a sump and on some steep climbs there can be problems if I drop below a half tank of fuel. It is best to run an in tank pump to minimize those problems. Or use a low pressure pump in the tank to keep fuel at the E8248. Pumps do a great job of pumping fuel. They do not suck it out of the tank very well. __________________ ANDY<--- ME! TrailWorthyFab.com<--- THE BEST DOUBLE BEAD LOCKS! Project: Dookey's revenge<--- My Junk! OFF ROAD GEAR<--COOL SWAG! Last edited by Dookey; 10-25-2008 at 07:36 AM.

10-25-2008, 10:07 AM	#4 (permalink)
JeepNatzi#2 Registered User Join Date: Mar 2006 Member # 69767 Location: IL Posts: 772	what are you running in your tank? If i understand correctly, the rail will kick down the pressure w/o the need for a regulator, right? thanks dookey! __________________ Hauler: 01 Powerstroke ExCab 6"Stacks 4" Lift Krawler: 97 TJ 5.3 V8 42" Iroks Dana 60's Atlas

10-25-2008, 10:47 AM	#5 (permalink)
Dookey GM at TWF Join Date: Oct 2003 Member # 23680 Location: Wichita, KS Posts: 7,301 Blog Entries: 1	I'm not running anything in the tank. That's why I've been having problems. I need to find a different cell setup first. The fuel rail regulator should keep the required pressure on the rail so there is no need for an extrenal FPR. Lots of guys like to use fuel pickups inside the tank. I don't know if they don't have problems since I've never used that setup. If the pick ups are always submerged I don't know if that is how people are keeping fuel at their pump. I still don't like the thought that the pump has to draw fuel. I'd rather something feed it. __________________ ANDY<--- ME! TrailWorthyFab.com<--- THE BEST DOUBLE BEAD LOCKS! Project: Dookey's revenge<--- My Junk! OFF ROAD GEAR<--COOL SWAG! Last edited by Dookey; 10-25-2008 at 10:49 AM.

11-04-2008, 07:43 AM	#6 (permalink)
JeepNatzi#2 Registered User Join Date: Mar 2006 Member # 69767 Location: IL Posts: 772	What if i through the stock tj pump in the tank, it already works ok. That will take care of the sump aspect. As well as "push" it out of the cell. than also run an inline pump to ensure i have adaquite pressure to the rail. I assume the $100 for the ring will be a headach savings in the long run as it will keep me from gathering more parts as well as keep my gauge working. Am i on the right page now? __________________ Hauler: 01 Powerstroke ExCab 6"Stacks 4" Lift Krawler: 97 TJ 5.3 V8 42" Iroks Dana 60's Atlas

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode