Bit of a double-header here:
Firstly, what is the standard flow rate of a 3.5 and 3.9 efi range rover injector? And how much more do they have left in them (e.g are they running an 80% duty cycle to power a 3.5, or will they take some extra power?)
Secondly, when I see kits on ebay that advertise as "everything you need to convert from carb to efi", there's never a fuel pump. I assume you'd need a higher pressure pump, or is it incorporated into the manifold or something?
Where do these normally fit?
Cheers
Tom.
Injector flow rate / EFi Fuel pump?
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Injector flow rate / EFi Fuel pump?
Rover 3.5 V8 landy - Completely rebuilt and purring... Now awaiting a good tune!!
The fuel pumps are commonly located in-tank and yes, as you say you will need a higher pressure one. A carb only takes 4.5psi on average, whereas a fuel injection system takes something like 30-40psi.
You can fit an external one but require a few additional components to get that kind of setup working, like a swirl pot to ensure a constant feed of fuel to the pump under cornering etc...
A high-pressure return line has to be fitted too, to let fuel back from the EFi rail.
Mine has a separate filter canister under the car as well but it is somewhat far from standard but all should have a filter somewhere.
The fuel pressure regulator is on the fuel pressure rail on EFi models, I think (but I stand to be corrected )
You can fit an external one but require a few additional components to get that kind of setup working, like a swirl pot to ensure a constant feed of fuel to the pump under cornering etc...
A high-pressure return line has to be fitted too, to let fuel back from the EFi rail.
Mine has a separate filter canister under the car as well but it is somewhat far from standard but all should have a filter somewhere.
The fuel pressure regulator is on the fuel pressure rail on EFi models, I think (but I stand to be corrected )