I posted this on thunderbirdforums but i think posting here might be of more help. If that isn't alright I can take it down. Just joined this forum.

Here's a run down of the situation. My 2004 Thunderbird was at the shop for over a year to have the engine from a 2005 Jaguar S Type R. According to him, it was a easy job. But it got pushed, and the details changed, over and over and over. I have it back now but am needing advice on where to go from here.




It's been a while..

Long story short, the car is out of the shop, but nowhere near done.


I think the mechanic just bit off more than he could chew. Things weren't adding up and it kept getting pushed back all year so I've got it back to see what I can accomplish with the help of some much more knowledgeable friends. No hate to the mechanic, but I was not impressed with the condition of the 4.2l engine he installed. I've gone through and done valve cover gaskets, plugs, wires, remanufactured injectors, and replaced the coolant pipes that run underneath the supercharger. I've got the supercharger assembly, and what seems to be most of the coolant system, but everything else is a mess or just missing. And all the bolts for everything were just thrown in the cab!!! Multiple gallon bags of bolts that I've got to sort out!


Being negative isn't going to get it running though. My main issue I'm trying to work through is the wiring situation. I don't think I should go up with the supercharger assembly until the wiring harness is figured out and routed. I've got both the STR harness and the TBird harness. Most all of the connectors are different. My friend went through the wiring diagrams while it was still in the shop, and said other than a few parts the stock Ford ECU should be able to run everything but I can't wrap my head around that. If anyone has ANY advice on where I need to start with wiring please reach out. I've heard about one or two people who have done this swap before so if anyone has I would love to pick their brains. I'll add some more photos if anyone is curious of what I'm working with. All comments are welcome.

 

Sorry I can't help with any specifics about the swap. If it will help, you can find Jaguar wiring diagrams and the service manual here:

JagRepair.com - Jaguar Repair Information Resource

 

IF it was my project, I would have a salvage S-TYPE R car sitting next to the Ford and basically use all the parts/harnesses from the S-Type including modules from the CAN bus.(an S-Type with a ford body)

Trying to integrate is going to be difficult. You will likely run in to communication issues.

 

the ford pcm will run everything, you need it for the 5r55s trans anyways. play lego and extend connectors on the harness to fit component locations in the sc engine.

vvt solenoids, oil sensors, cam sensors, injectors, ac compressor, fuel rail pressure sensor all share connectors.

the flex plate is different. the 3.9 has a ford crank sensor and a 36-1 wheel. swap it

you have to use 3.9 cams. or at least swap the sensor pickup wheels. they are different

3.9 valve covers have to be used to fit the ford 2-wire coils. adapt your breather lines to work

the 3.9 uses a cht sensor in the right head that the 4.2 is not tapped for, that uses an ect in the thermostat housing. no idea if this is switchable in the tune.

anything to do with the dpfe/egr unit has to be deleted. they are totally different

alternator has to come from the tbird

your biggest challenge with the tbird is fitting a bulky front mount 3.9 throttle to the rear mount 4.2sc elbow. or figure out how to drive a ford throttle position sensor off the 4.2 throttle body

 

this is a gen 1 lincoln ls (cable throttle) with a 4.2 in it. this has 3.9 heads and cams on it. 3.9 heads have a hole for the head temp sensor.

ideally when you take the engine out put the 3.9 heads in there. they have better ports and you can keep the cht sensor

 

Any way to avoid the flexplate and heads? More than willing to do everything else but if the heads/flexplate absolutely has to be swapped I'm going to have to take it to a shop to get it done. I don't have the means to drop the transmission or engine at home. I'll look at the throttle body and see what needs to be done there. The shop I took it to that was supposed to do the swap didn't get much further than getting the jag engine dropped in and mated to the 5r55s and that took them a year!

 

Is this your car? Or do you know who did the swap successfully? I'm glad to see it has been done on the LS though. Asking in T-Bird forums no one was sure if it had ever been done even in the LS.

 

not my car.

if they were able to get it mated to the the 5r55 torque converter they needed the 3.9 flex plate. the zf uses 3 bolts the ford trans has like 10 dowels

if you can’t swap heads, find a way to relocate the head temp sensor to the thermostat housing or anywhere you see fit. the probe is really long

 

Great ok. I'll look into it more. Thank you for all the info.

 

xalty will the 5 speed Ford transmission hold up to the SC 4.2L? They came with the much stronger ZF 6 speed from Jaguar?
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From what I've heard the 5r55s can handle up to 425hp or so. It was used in the 05 Mustang and some have used the stock trans on upgraded engines.

 

Forgive me for all the dumb questions. Both the Jag and the Ford throttle position sensors use 4 pin connectors, could I cut the connector off of the Jag harness, and splice it onto the Ford harness, or are the signals the sensors send different in some way?

 

Assuming the sensors are the same (does the Ford use Denso engine management?), why not got a proper tool to release the pins from the plug housing as opposed to cutting the harness? Slice-n-dice usually gives trouble down the line...

 

I'll depin it and do it the correct way, just curious if it's possible

 

Ford Valve Covers

Ford Heads

Jag Valve Covers

I'm pulling the OG Ford engine apart to swap the cams and valve covers over, and I'm seeing that there are two ports coming off of the Ford that the Jag doesnt have. Does this have something to do with the VVT? Can I swap these over to the jag?

 

you’re gonna have to blank the hole off and run the jag intake sprocket. installing cam phasers requires you to take a plug off in the head for the vvt oil bridge passage.