Has anyone any experience with replacing 4.0 l engine with 4.2l engine in the XCK8. My 1999 XK8 engine blew and I found some 4.2l engines that are cheaper than older AJ27 engines. Can the newer engine be swapped for the older one? What is involved???

 

Wow, what happened to your engine?

 

check the FAQ thread at the top of the XK8/R forum, we've got a link to a thread already discussing the swap over option.

 

the upper tensioner disintegrated, a timing chain broke and pistons met with valves in unfriendly encounter....

 

I have tried FAQ but neither matches for words "replacement" nor "swap"

 

Try here.

https://www.jaguarforums.com/forum/s...d.php?p=177881