Found the difference with the 5th gen fuel rails ->
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Picked up a part at the local Nissan dealer and had a chance to look under the hood of a 2000 Maxima on display.
The 5th gens split the fuel feed to both fuel rails. There is a fuel pressure regulator at the end of each rail...two fuel regulators total...and the returns tie back in together and go back to the tank.
That's different than the 4th gens. We have the fuel from the tank feeding the front rail first, then the outlet of that one routes to the rear rail, and the fuel regulator is located at the end of that rear rail.
I've looked at our setup before and thought, "Why the hell did they do that? Aren't we starving our rear cylinders?" I guess Nissan agreed, and they changed the 2000 setup.
Looks like swapping the 5th gen, dual regulator rails is a direct swap from our 4th gen rails, too. Should help keep our cars a more constant fuel supply. Less pressure spikes, more constant pressure, etc...should especially help supercharged and nitrous'd 4th gens.
Just though you 4th gen'ers might be interested in that.
[Edited by Keven97SE on 09-18-2000 at 06:05 PM]
The 5th gens split the fuel feed to both fuel rails. There is a fuel pressure regulator at the end of each rail...two fuel regulators total...and the returns tie back in together and go back to the tank.
That's different than the 4th gens. We have the fuel from the tank feeding the front rail first, then the outlet of that one routes to the rear rail, and the fuel regulator is located at the end of that rear rail.
I've looked at our setup before and thought, "Why the hell did they do that? Aren't we starving our rear cylinders?" I guess Nissan agreed, and they changed the 2000 setup.
Looks like swapping the 5th gen, dual regulator rails is a direct swap from our 4th gen rails, too. Should help keep our cars a more constant fuel supply. Less pressure spikes, more constant pressure, etc...should especially help supercharged and nitrous'd 4th gens.
Just though you 4th gen'ers might be interested in that.
[Edited by Keven97SE on 09-18-2000 at 06:05 PM]
Joined: Aug 2000
Posts: 4,857
From: San Bruno, Petaluma, SF Bay area
hummm that seems pretty interesting. How much did this cost? i wonder how ill be able to work it since i got this special adapter for the fuel pressure gauge and an adjustable fuel pressure regulator. thanks
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Posts: n/a
Hmm thats interesting
Originally posted by Keven97SE
Picked up a part at the local Nissan dealer and had a chance to look under the hood of a 2000 Maxima on display.
The 5th gens split the fuel feed to both fuel rails. There is a fuel pressure regulator at the end of each rail...two fuel regulators total...and the returns tie back in together and go back to the tank.
That's different than the 4th gens. We have the fuel from the tank feeding the front rail first, then the outlet of that one routes to the rear rail, and the fuel regulator is located at the end of that rear rail.
I've looked at our setup before and thought, "Why the hell did they do that? Aren't we starving our rear cylinders?" I guess Nissan agreed, and they changed the 2000 setup.
Looks like swapping the 5th gen, dual regulator rails is a direct swap from our 4th gen rails, too. Should help keep our cars a more constant fuel supply. Less pressure spikes, more constant pressure, etc...should especially help supercharged and nitrous'd 4th gens.
Just though you 4th gen'ers might be interested in that.
[Edited by Keven97SE on 09-18-2000 at 06:05 PM]
Picked up a part at the local Nissan dealer and had a chance to look under the hood of a 2000 Maxima on display.
The 5th gens split the fuel feed to both fuel rails. There is a fuel pressure regulator at the end of each rail...two fuel regulators total...and the returns tie back in together and go back to the tank.
That's different than the 4th gens. We have the fuel from the tank feeding the front rail first, then the outlet of that one routes to the rear rail, and the fuel regulator is located at the end of that rear rail.
I've looked at our setup before and thought, "Why the hell did they do that? Aren't we starving our rear cylinders?" I guess Nissan agreed, and they changed the 2000 setup.
Looks like swapping the 5th gen, dual regulator rails is a direct swap from our 4th gen rails, too. Should help keep our cars a more constant fuel supply. Less pressure spikes, more constant pressure, etc...should especially help supercharged and nitrous'd 4th gens.
Just though you 4th gen'ers might be interested in that.
[Edited by Keven97SE on 09-18-2000 at 06:05 PM]
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