Lookin to buy an 01 S-Type 4.0, the seller says the timing chain broke but isnt 100% sure, its what his local mechanic told him. I cant really trust some of these guys since many arent educated on Jags.How can I check? The mechanic said it was loose and he drove it with the timing chain loose and the now it finally broke, Also, will a 4.0 XJR motor work?

 

4 chains. Two primary and two secondary. They don't need replacing for the life of the engine thankfully - unless you have a tensioner failure and they stretch. Happened to me and I replaced ONE chain confidently.

Sachs makes them.

 

xjr motor wont fit in the stype totally different mounting
not to mention time effort and money it would take ecm/harness etc etc
as far as broken chain goes you better make sure valves arent bent or even worse broken
ive seen itquite a few timeswith totall destruction of cylinder wall and piston damaged

 

The 4.0l is an interference engine, ask me how I know[:@]Chances are the valves said hello to the pistons when the chain broke.

As far as it becoming loose before breaking, I'd be affraid tobuy a car owned by someone so neglegent!

 

Yep, not good judgment to drive a car with a loose timing chain.

 

Don't even consider any model year prior to 03. The 03 have major upgrades to the electronics and the engine. It also comes standard with the nav.

 

03 and later is defently the way too go if you can
as far as standard nav not true
its a option