Thread: 3.9 Lucas injector part #'s

No to knowledge of part number
But have noticed that Ford EA 3.9 6cylinder motors run the same gear
(Injectors & air intake box sensor)
What are you after, new injectors?? whats the year of motor??

Im investingating running a smaller bosch injector in my 4.6ltr V8. I believe the Lucas injectors are 39lb/hr which i think is too large and i would like to go to the 29lb/hr bosch0-280-156-124 squirts. (just so happen to have a set laying around.....)

Originally Posted by Lucus

Im investingating running a smaller bosch injector in my 4.6ltr V8. I believe the Lucas injectors are 39lb/hr which i think is too large and i would like to go to the 29lb/hr bosch0-280-156-124 squirts. (just so happen to have a set laying around.....)

LUCUS
Is the intention to some how save fuel via smaller injectors??

In a round about sort of way Mike. My RR runs a wolf ecu and im not happy with the inconsistent delivery of the stockies. I think the modern multiorifice squirts will improve fuel metering and fuel delivery/control. I have a set of 8 i can use for nothing and can do the tuning myself so i figure its worth a go.

FWIW 39lb/hr eqautes to aprox 60hp per injector 60 X 8=480hp
Im looking at 29lb/hr which equates to around 40hp 40 X 8=320hp much more realistic for a rover V8 i feel.

the injectors are also a higher impedance which redues load on the ecu injector drivers. The improved low rpm fuel metering should help with improving torque and fuel consumption

Originally Posted by Lucus

Im investingating running a smaller bosch injector in my 4.6ltr V8. I believe the Lucas injectors are 39lb/hr which i think is too large and i would like to go to the 29lb/hr bosch0-280-156-124 squirts. (just so happen to have a set laying around.....)

Originally Posted by Lucus

In a round about sort of way Mike. My RR runs a wolf ecu and im not happy with the inconsistent delivery of the stockies. I think the modern multiorifice squirts will improve fuel metering and fuel delivery/control. I have a set of 8 i can use for nothing and can do the tuning myself so i figure its worth a go.

FWIW 39lb/hr eqautes to aprox 60hp per injector 60 X 8=480hp
Im looking at 29lb/hr which equates to around 40hp 40 X 8=320hp much more realistic for a rover V8 i feel.

the injectors are also a higher impedance which redues load on the ecu injector drivers. The improved low rpm fuel metering should help with improving torque and fuel consumption

Oh .. OK to all that
I was worried that you had a "standard ECU setup" and that installing smaller injectors was going to starve the motor of fuel and start burning valves / plugs / pistons (you get the picture)

But i can see that you have the tools to experiment

I am pretty sure that lucas green band injectors are 23.5 Lb per hour.
A good easy replacement are Holden 3.8 or 5.0 V8 injectors which are 18Lb per hour. ( strangely enough!)
Ford motorsport injectors for a Mustang are a direct modern 4 hole replacement from FiveOmotorsports.
Fuel Injectors - Diesel Powerstroke Injectors - Bosch Injectors - Siemens, Denso, Rochester Injector Sets - FiveOMotorsport
I have 4 hole Bosch yellow injectors fitted to my 14CUX and they are fine, giving a much better and consistent idle. These were an earlier cross reference a couple of years ago.
Regards Philip A