INSTALLED THERE HIGH FLOW FUEL PUMP AND IT WORKS GREAT
VERY MINOR MODS TO FIT 80.00 HELA BETTER THAN 260.00
AND IM GOOD TO 500 HP IF I CHOSE AND MAN IS IT QUIET
I USED FACTORY MOUNT JUST HAD TO SPLIT IT DOWN THE MIDDLE
INSERT NEW PUMP ATTACH SUCTION HOSE USEING HOSE CLAMP
VERY SMALL ONE ALSO I HAD TO TRIM THE PLASTIC ON NEW PUMP
TO MAKE ROOM FOR THE HOSE CLAMP VERY SLIGHT TRIMMING
WITH A SHARP KNIFE WIRED IT UP AND WHAT A DIFFERENCE
THE OUTLET IS ALL FACTORY NO MODS NEEDED
T.R.E FUEL PUMP
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Q45tech
- Moderator
- Posts: 14296
- Joined: Tue Apr 30, 2002 3:19 am
- Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl
Re: (Jesda)
241 lph [64 gallons per hour ] at 13.5 volts and 43.4 psi oem pump is rated at 400 pounds per hour which is enough for 800 HORSEPOWER.
WHY did you use such a weak replacement pump? only 500 HP vs 800 oem?
http://www.stealth316.com/2-fuelpumpguide.htm
Whenever modifying fuel system always important to test fuel rail PSI UNDER MAX LOAD and rpm to make sure the redesign can supply 43.4 psi to supply the volume the injectors demand.
Specs are one thing but real world measurements often may not agree especially with low cost replacements.
WHY did you use such a weak replacement pump? only 500 HP vs 800 oem?
http://www.stealth316.com/2-fuelpumpguide.htm
Whenever modifying fuel system always important to test fuel rail PSI UNDER MAX LOAD and rpm to make sure the redesign can supply 43.4 psi to supply the volume the injectors demand.
Specs are one thing but real world measurements often may not agree especially with low cost replacements.
Re: (Jesda)
sorry didnt mean to offend
as far as gallons per hour goes if this is weak ill keep it this way it runs much better . the last pump cost me 260 at the dealer,and lasted 100.000. miles not bad!!!
this pump cost 80 and works fine.at all speeds and im sorry for the purist that think spending more gets more . by the way it was made by the racers edge.pump # tre341 and sorry i didnt think to take pics
and for a 14 year old car with 270.000 miles on it i dont think ill need 800 hp anytime soon id be lucky to get 350 hp out of this tired old motor
as far as gallons per hour goes if this is weak ill keep it this way it runs much better . the last pump cost me 260 at the dealer,and lasted 100.000. miles not bad!!!
this pump cost 80 and works fine.at all speeds and im sorry for the purist that think spending more gets more . by the way it was made by the racers edge.pump # tre341 and sorry i didnt think to take pics
and for a 14 year old car with 270.000 miles on it i dont think ill need 800 hp anytime soon id be lucky to get 350 hp out of this tired old motor
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maxnix
- Posts: 22627
- Joined: Mon Jul 22, 2002 8:11 pm
- Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45
Re: T.R.E FUEL PUMP (93 Q45)
I would wonder what the consequences were of not operating at the three different pressures of the OEM one? Surely it would draw excessive current at idle? I wonder how long it will last if the top end margin is only 62.5% of the OEM one?
Interesting. Keep us informed.
Interesting. Keep us informed.
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Q45tech
- Moderator
- Posts: 14296
- Joined: Tue Apr 30, 2002 3:19 am
- Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl
Re: (Jesda)
Because they had one already in inventory and to stabilize the flow [not allow rail flucuations] when injectors open.
Since 35 lbs per hour x a 55% duty cycle = 19.25 x 2= 38.5 HP per injector x 8= 308HP........................some engineer felt that 2.6 times the maximum demand was needed to insure that after 100,000 miles it still met specs.
Not a rail design expert but it stands to reason that to minimize psi variations you would need to return at least as much gasoline to the tank as you sent into engine. A significant reason too OVER VOLUME the system is to remove the excess heat from the rails [under plenum] by returning the hot gasoline to the colder fuel tank.
Today GM uses +/- 3 psi pressure as the standard, I am assumming Nissan bettered this number 15 years ago. At 43.4 vs 40.4 psi that would translate into a 3.5% reduction in flow.
Also variable rpm resonance occurs in many undersized designs.http://www.visteon.com/utils/w...df%22
Only takes 6 engineers months and massive computer time to deisign a fuel rail much less than the entire fuel system.
Returnless systems now measure the temperature of gasoline passing thru fuel pump and compute the rail temperature based on ambient sensor in MAF and coolant temp...........precise control vs the crude over design method.
Since 35 lbs per hour x a 55% duty cycle = 19.25 x 2= 38.5 HP per injector x 8= 308HP........................some engineer felt that 2.6 times the maximum demand was needed to insure that after 100,000 miles it still met specs.
Not a rail design expert but it stands to reason that to minimize psi variations you would need to return at least as much gasoline to the tank as you sent into engine. A significant reason too OVER VOLUME the system is to remove the excess heat from the rails [under plenum] by returning the hot gasoline to the colder fuel tank.
Today GM uses +/- 3 psi pressure as the standard, I am assumming Nissan bettered this number 15 years ago. At 43.4 vs 40.4 psi that would translate into a 3.5% reduction in flow.
Also variable rpm resonance occurs in many undersized designs.http://www.visteon.com/utils/w...df%22
Only takes 6 engineers months and massive computer time to deisign a fuel rail much less than the entire fuel system.
Returnless systems now measure the temperature of gasoline passing thru fuel pump and compute the rail temperature based on ambient sensor in MAF and coolant temp...........precise control vs the crude over design method.