Turbocharging a 4.6 V8
#81
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Ok, so I've come up with what night be kind of a stupid idea, but I'm asking to be sure.
5 lbs of boost is a 34% increase over stock air flow.
A 34% increase over 19 lb injectors would be just shy of 25.5 lbs. About a lb and a half more than those 24 lb injectors.
If I were to install those injectors and increase fuel pressure by either:
A.) an aftermarket fuel pump, which I will likely need anyway when I Bob the back if my truck because I'll have to shorten the fuel tank.
B.) stick a cut off valve on the fuel return line to close it or atleast bottle neck it some.
Shoot me straight, would this work? I mean, I'm sure it would run filthy pig rich at idle, but I'm not worried about that. I'm just curious if this would keep me from leaning out once I was on boost?
5 lbs of boost is a 34% increase over stock air flow.
A 34% increase over 19 lb injectors would be just shy of 25.5 lbs. About a lb and a half more than those 24 lb injectors.
If I were to install those injectors and increase fuel pressure by either:
A.) an aftermarket fuel pump, which I will likely need anyway when I Bob the back if my truck because I'll have to shorten the fuel tank.
B.) stick a cut off valve on the fuel return line to close it or atleast bottle neck it some.
Shoot me straight, would this work? I mean, I'm sure it would run filthy pig rich at idle, but I'm not worried about that. I'm just curious if this would keep me from leaning out once I was on boost?
#82
#83
#85
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Bosch uses a returnless fuel system. You will have to replumb the vehicle and change the in tank pump to use an adjustable regulator. Then you have the problem of an ECM you cant modify calculating injector pw based on a fixed pressure and a system with a variable pressure
#86
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Bosch uses a returnless fuel system. You will have to replumb the vehicle and change the in tank pump to use an adjustable regulator. Then you have the problem of an ECM you cant modify calculating injector pw based on a fixed pressure and a system with a variable pressure
Lots of questions, but I haven't done much work on the factory fuel system so I don't know all the details on how it works compared to a standard fixed pressure return style system.
#88
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Ok, so returnless system. Why would I need to re-plumb the vehicle and replace the in tank pump in order to use an aftermarket fixed pressure regulator? Could I not just remove the factory regulator and add the aftermarket one in line and keep the factory pump?
Lots of questions, but I haven't done much work on the factory fuel system so I don't know all the details on how it works compared to a standard fixed pressure return style system.
Lots of questions, but I haven't done much work on the factory fuel system so I don't know all the details on how it works compared to a standard fixed pressure return style system.
you would need to replace the in tank pump because of its internal regulator.
youll also need something to activate a pneumatic valve so when engine pressure is above atmospheric pressure the regulator is referencing engine pressure instead of atmo.
#89
#90
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Yea, if I tried to use the drivers side manifold it would literally end up inside the valve cover, no way it would work upside down.
I'm also having trouble finding 5lb wastegate for these KO3s I'm getting from coors. I'm going to call up some manufacturers and see if I can find any 5lb internal wastegate. If I can't then I'll have to make block off plates and run external wastegates. We'll see.
I'm also having trouble finding 5lb wastegate for these KO3s I'm getting from coors. I'm going to call up some manufacturers and see if I can find any 5lb internal wastegate. If I can't then I'll have to make block off plates and run external wastegates. We'll see.