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Old 07-06-2003, 00:28   #1 (permalink)
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xf efi motor

hey all, well as some of you may know ive recently bought a carbie xf as a project car, the engine is rooted in it so i need to replace it,

ive been looking around for unleaded carbie 4.1's (thats whats in the car at the moment) but they are unbeleivably rare,

just wondering if any of the efi 4.1's came out in unleaded form?

also would it be a waste of time to fit an efi engine into it? i mean for example im looking at an efi 4.1 out of an 87n xf, it comes with the loom and computer, what work would need to be carried out to install these parts?

thanks in advance!
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Old 07-06-2003, 00:38   #2 (permalink)
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Re: xf efi motor

Yes, the unleaded XF falcons did come out with EFI, all that i think was different on the EFI side was a knock sensor, which bolts on to the negative battery lead on the engine.

all that you will need to do is push the wiring harness through the firewall where the EST harness goes. reinstall computers. install starter booster realay, aircon cluch diodes, and EFI stuff eg injectors. it is all a straight swap over though. and the fuel pump and tank (i think)

Anyone feel free to point out anything i missed.

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Old 07-06-2003, 00:39   #3 (permalink)
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Re: xf efi motor

Fuel lines too probably.. for pressure..

Dan..
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Old 07-06-2003, 01:38   #4 (permalink)
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Re: xf efi motor

Easiest way to do something like this i think would be to change over the entire engine bay wiring loom to an efi one, there are a lot of little bits that may be overlooked otherwise.

I'm going to be doing the reverse soon, to get rid of all the extra wiring when I go to straight gas.

The wreckers near here will give me entire engine bay wiring loom for pre '86 carby XF for $25 minus relays.
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Old 07-10-2003, 21:17   #5 (permalink)
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Re: xf efi motor

I have a 4.1 EFI to suit XF. It is currently in a Fairlane (fairlane of the XF, ZL). It is complete (still in car), so anything you need, I got. The only difference may be the fuel lines and fuel tank? It is originally leaded, but I was running unleaded fine for almost a year.
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Old 07-10-2003, 21:53   #6 (permalink)
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Re: xf efi motor

If you're changing to EFI, why not go the E-series wiring? It won't be any harder and shouldn't cost much more
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Old 07-10-2003, 22:20   #7 (permalink)
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Re: xf efi motor

Just a follow on and a step furthur to what mongrel said ( Down boy Down ) why not fit a 3.9 or 4.0 from and ea-el series engine. Hell of a lot more power, and no worries about leaded/unleaded issues.
I know they have been done before, and i dont think there is much modification to K-Frame or gearbox crossmember. PLUS if you go auto, you get O/D.

Just my 2 cents.
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Old 07-10-2003, 22:51   #8 (permalink)
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Re: xf efi motor

Buy a carbie kit and rebuild the carby, its not hard and worth the effort, just scrub clean everything with degreaser and dry it, lube what needs to be, and put it back together. I rebuilt mine this way, worked 100%, and wasnt that hard, took a little bit of effort.

If you are missing the carby then, um guess I havent helped.

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Old 07-11-2003, 04:34   #9 (permalink)
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thanks for all the replies guys, all plans for the xf are on hold for the time being, gotta sort out what im doing with my ea

thanks alot and hopefully this info will go to good use!
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