For those with 3.5s in 4th gen,please explain ur fuel setup/fuel pump regulator setup
#1
For those with 3.5s in 4th gen,please explain ur fuel setup/fuel pump regulator setup
Im having a 3.5 put in a 4th gen which is just about complete ... but as some of you have seen, theres a video posted by tavarish in which the engine has some serious noises going on idle ... I dont think its getting the proper amount of oil and and fuel in the engine..Im just curious to what people are using as their fuel pump regulator and what your using for the fuel system to work properly and efficiently ? thanks
#3
My fuel setup is exactly the same as the good ol'4th gen's. Return type still there. I've done the swap with pathfinder heads which allows me to keep the manifolds and fuel system. Still using sidefeed injectors. No fuel pump nor fuel regulator replacements, yet. Walbro will go in soon, though.
Car runs lean and powerful at partial throttle, it gets pig rich upon 40%+ throttle. About to adjust all that with EU.
Car runs lean and powerful at partial throttle, it gets pig rich upon 40%+ throttle. About to adjust all that with EU.
#7
Originally Posted by SpeedCrazie
So what do we do if we want / need to keep the return style fuel setup?
#8
Originally Posted by GodFather
Use pathfinder heads, use 4th gen lower manifold, voila, you can keep everything 4th gen in terms of fuel setup.
#11
Here is a returnless system. With this returnless system, fuel STILL returns to the tank, just not via the fuel rail. This is a different type of setup that are in the 5.5 gens.
Courtesy of Biggs_02 for the pic.
With that said, I had a normal return setup on mine, runs fine with no problems.
Courtesy of Biggs_02 for the pic.
With that said, I had a normal return setup on mine, runs fine with no problems.
#12
Originally Posted by Nismo3112
Here is a returnless system. With this returnless system, fuel STILL returns to the tank, just not via the fuel rail. This is a different type of setup that are in the 5.5 gens.
Courtesy of Biggs_02 for the pic.
With that said, I had a normal return setup on mine, runs fine with no problems.
Courtesy of Biggs_02 for the pic.
With that said, I had a normal return setup on mine, runs fine with no problems.
#15
*is where it leaves the tank
stock 4th gen, return:
pump >* filter > rail > FPR> return > tank
stock VQ35, returnless:
pump > fitler > FPR V>* rail
return within tank
Semi returnless/hybrid:
pump >* filter > FPR V> rail
return > tank
The semi returnless is the best option IMO since it allows for rising rate pressure (good for boosting, easy access to the filter, and cooler temps of returnless.
stock 4th gen, return:
pump >* filter > rail > FPR> return > tank
stock VQ35, returnless:
pump > fitler > FPR V>* rail
return within tank
Semi returnless/hybrid:
pump >* filter > FPR V> rail
return > tank
The semi returnless is the best option IMO since it allows for rising rate pressure (good for boosting, easy access to the filter, and cooler temps of returnless.
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