2004 w/ Jaguar 4.2 Engine Swap

biddle said:
They didn't even make a manual transmission for the Lincoln or Ford, so obviously this is not feasible or practical.
Click to expand...
What about a possible combination of Tremec for the transmission, Advance Adaptors for any "in between" and some custom fabrication for the pedals?
 
I understand that the block was altered for 4.2. Is that true? Does it affect the trans? (are you going to use the original or one that came with the block(long or short?)) How much of this is plug-and-play and how much will need mods?
 
Haven't had any movement on the project for months but we're starting to get going again. My mechanics ran into some wiring issues. They were able to find someone who's reflashing the Ecm to communicate with the 4.2l so we can use the stock ECU and harness. So far, the only thing we've had to get was the Jag compressor. From what I understand there was no issues mounting to original Ford trans. Hoping to be back on the road by August!
 
M. House said:
I understand that the block was altered for 4.2. Is that true? Does it affect the trans? (are you going to use the original or one that came with the block(long or short?)) How much of this is plug-and-play and how much will need mods?
Click to expand...
From what I understand all is plug and play other than needing to get the Jag compressor. We're using the original Ford trans with no issues.
 
stephen871 said:
Any updates (pics) on your swap? I hope things are moving along smoothly for you. I currently don't own a Thunderbird, but hope to get one by the end of this year and perform a similar swap. Swapping with a 4.2L Supercharged Jag (R) is a great idea since the Thunderbird, S-Type and LS have a lot of parts in common. Some believe that jags engines are unreliable, but I think with the proper maintenance and if you know what you're doing they can last because I've had 3 of them. Did you have to change out your ECU/ECM with your swap? What other parts or accessories did you have to swap?
Click to expand...
Gorgeous S-types! As with many, as long as you keep up with regular maintenance they'll last.

We did have to get a Jag compressor, but other than that all Ford accessories are bolt-on. We're using the Ford harness and ECM but its getting reflashed by a guy up north.

Engine is in though! Hoping to get the ECM back and be on the road by August.
 
@bradmwortham , you said you are getting the 4.2 Supercharged Jag engine. That would be the AJ33S which from what I have read makes around 400HP depending on the year and model Jag it came out of. I saw where you posted "300hp in the S-Type R". That would be a 2003 to 2008 engine and the specs say 400HP. You may be pleasantly surprised if you are only expecting 300HP. lol Please do get details from your mechanics on whether the original ECU was used or not and if there are/were any other issues with the swap and what they were. I am excited to see how this turns out. Thanks
 
Last edited by a moderator:
bradmwortham said:
I love this forum so I thought I’d add to it myself. My 04 Thunderbird engine blew on me a few months ago and right now it’s in the shop getting a 4.2 Jaguar Supercharged engine installed as well as a PowerStop brake kit. I’ve seen multiple discussions about swapping a 4.2l in but haven’t seen any done. Any questions or advice is welcome. I’ll try to update this as the project moves along!
Click to expand...
Don't forget to post pictures when you're done. I'd love to see that.
 
purplewg said:
@bradmwortham , you said you are getting the 4.2 Supercharged Jag engine. That would be the AJ33S which from what I have read makes around 400HP depending on the year and model Jag it came out of. I saw where you posted "300hp in the S-Type R". That would be a 2003 to 2008 engine and the specs say 400HP. You may be pleasantly surprised if you are only expecting 300HP. lol Please do get details from your mechanics on whether the original ECU was used or not and if there are/were any other issues with the swap and what they were. I am excited to see how this turns out. Thanks
Click to expand...
Mustve been a mistype, you're right it is 400hp and Im definitely going to be pleased. I had so much fun with it bone stock! I don't want to do anything to crazy but am planning on (maybe) upgrading the supercharger pulley and some other performance mods to up that number a little.

michelb1 said:
Don't forget to post pictures when you're done. I'd love to see that.
Click to expand...
This is all I've got so far. Ill make sure to more when work is done and i get 'er all cleaned up.

9485CA4E-F070-4406-A759-DD9ED3C5B0DD.jpeg
 
marvinlee said:
Will the 4.2 engine have sufficient free space to rock the maximum amount on its rubber engine mounts during engine torque swings?
Click to expand...
Are the Jag heads wider than the Ford? The Ford 3.9 is already a tight fit. The WIKI on the AJ engines says this about the 3.9:

"The 3.9 L (3,934 cc) AJ30/AJ35 variant is a unique displacement used only by Ford and Lincoln and is built in Ford's Lima, OH engine plant. Bore and stroke is 86 mm × 85 mm (3.39 in × 3.35 in). The AJ35 version introduced for the 2003 model year added variable valve timing of the intake camshafts and electronic throttle control. While the block, crankshaft, pistons, and connecting rods are all unique to this displacement, many other parts are shared with the AJ-V8 engines produced in the UK by Jaguar." Heads are not mentioned as being unique to the LS and Thunderbird applications. Just wondering.
 
What an exciting project! Interesting to me is that even though the engines are essentially identical, I think the transmissions are different: the Thunderbird has a five speed and the Jaguar has a ZF six speed. I guess the rationale is that once they upgraded the Thunderbirds in 2003 to the variable valve timing that the Jags already had, the Jags had little left to justify their 25% higher price. The extra 200cc displacement in the regular Jag 4.2 adds only about 20 horsepower. So they gave the Jag a better, six speed, transmission. But the R model supercharger adds another 120 horsepower over the Tbird, and boy will you be spinning those tires!!!
 
sscharfman said:
What an exciting project! Interesting to me is that even though the engines are essentially identical, I think the transmissions are different: the Thunderbird has a five speed and the Jaguar has a ZF six speed. I guess the rationale is that once they upgraded the Thunderbirds in 2003 to the variable valve timing that the Jags already had, the Jags had little left to justify their 25% higher price. The extra 200cc displacement in the regular Jag 4.2 adds only about 20 horsepower. So they gave the Jag a better, six speed, transmission. But the R model supercharger adds another 120 horsepower over the Tbird, and boy will you be spinning those tires!!!
Click to expand...
Ok, from what I'm reading, do you mean that a Jag ZF six speed would fit on a TBird? Would it fit on a 2002 with the 3.9. I do mostly highway driving and could sure use an extra lower gear for cruising.
 
michelb1 said:
Ok, from what I'm reading, do you mean that a Jag ZF six speed would fit on a TBird? Would it fit on a 2002 with the 3.9. I do mostly highway driving and could sure use an extra lower gear for cruising.
Click to expand...
Unfortunately I don't know anyone who has tried this, so I don't know if it will fit. I would assume the tunnels are very similar and obviously the linkages should swap. The big question is whether the Ford computers could be reprogrammed or if you'd need to swap in Jag computers.
 
I subscribed to get updates on this. I'm looking forward to hearing how all the ECM issues get resolved - that's the real bugaboo here. If your mechanic is able to get all this sorted out, well, I'm guessing he might end up with a line of T-Bird owners at his door trying to throw money at him. (Of course, he may never want to see another one after this. . .)
I think the ZF box would be a significant upgrade, and why not, in for a penny, in for a pound.
Good luck with the project.
 
sscharfman said:
Unfortunately I don't know anyone who has tried this, so I don't know if it will fit. I would assume the tunnels are very similar and obviously the linkages should swap. The big question is whether the Ford computers could be reprogrammed or if you'd need to swap in Jag computers.
Click to expand...
One way or another, the computer issue will be the knot of the job.
 
We're close everybody! The re-flashed ECM is in. Tomorrow he'll start going back together and install the PowerStop brake kit. After that, we should be good to hit the streets! So happy to finally be close to having it back. It's been dead for well over a year.

I am worried about the factory driveshaft. I feel like i've read somewhere about these breaking when people remove the factory speed limiter. I'm concerned the extra torque could cause some real damage. Does anyone know if there's a company that makes an aluminum driveshaft? Or will I need to have one fabricated?

I'm looking forward to posting photos of the finished project, and maybe link a video of those tires spinning as well. Cheers!
 
Mach5 said:
I subscribed to get updates on this. I'm looking forward to hearing how all the ECM issues get resolved - that's the real bugaboo here. If your mechanic is able to get all this sorted out, well, I'm guessing he might end up with a line of T-Bird owners at his door trying to throw money at him. (Of course, he may never want to see another one after this. . .)
I think the ZF box would be a significant upgrade, and why not, in for a penny, in for a pound.
Good luck with the project.
Click to expand...
I think the latter is closer to the truth. With the amount of time it took I'm sure he's done with them.

I'll definitely be looking into the ZF box in the future. I'm not sure if they offered it in the US but I do believe they had a manual S Type R. Who knows, might see an actual manual swap one of these days.
 
There are any number of places that can make a custom heavy duty driveshaft for you. Now, an aluminum one - that might be tougher to source.

In any case, I'm looking forward to the photos.
 
You must log in or register to reply here.
Back
Top