- Last seen
- Nov 23, 2018
- Thunderbird Year
2002-05 Owners. As of August 2022 there is now an entire suspension kit for sale! Scroll down to the bottom of the first post click here.
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.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?
Gorgeous S-types! As with many, as long as you keep up with regular maintenance they'll last.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?
Don't forget to post pictures when you're done. I'd love to see that.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!
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.@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
This is all I've got so far. Ill make sure to more when work is done and i get 'er all cleaned up.Don't forget to post pictures when you're done. I'd love to see that.
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:Will the 4.2 engine have sufficient free space to rock the maximum amount on its rubber engine mounts during engine torque swings?
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.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!!!
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.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.
One way or another, the computer issue will be the knot of the job.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 think the latter is closer to the truth. With the amount of time it took I'm sure he's done with them.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.