Mine are confirmed worn (08 XKR) and the engine doesn’t do that.
By worn, there are clear signs of the hydraulic fluid leaking.
Seems more than just worn.

 

thanks. So no movement at all on your engine when revving to ~4k?

 

Doesn't look excessive to me - the mounts are "designed" that way otherwise they may as well be cast iron - that'll keep the engine still.

 

Don’t think so.
Not a fan of revving not under load, but I’ll go check and video it. BRB.
Was this at temp?

I knew mine were going because every time I start it cold, when it does the drop from ~1200rpms to ~900 the car does a brief shimmy shake. Does it again when warmed up and drops to the normal 600rpm idle.
Had shop lift it and sure enough, signs of hydraulic leakage on and under the mounts.

Update: It moved a tiny bit the first time before video. Barely noticeable. Not after.

 

yes this was after a 20 minute drive and operating temp

dont know about the shimmy but the interior trim sometimes vibrates at idle when cold

also have a strange vibration / drone coming from engine at exactly 2900-3000k rpm - in every gear and even in neutral

 

yes I thought this was maybe slightly worn but not crazy

the hellcat motors seem to move a lot when revved

can’t find a ton of examples of jags revving

 

@Street cat
If you decide you need new ones, I got both for $180 including the trans mount. Aftermarket of course.
Site called IB Spot.
The ouch is install. Both my Indies want $800.
A third I called wants $960.

After digging through the forums, these XF are an exact match. Haha I hope.

 

I check via power braking (or at least start there). If it lifts while power braking, in drive and reverse, then I would move on to checking with a pry bar. If you don't know what you're doing, take it to the shop to power brake test it. I'm guessing there are videos on power braking.

 

When changing the alternator, an engine mount has to be moved. Maybe a good time to change the mount!

 

That's what I mentioned earlier but there was some disagreement..
Had mined changed with the alternator

 

Both mounts? I know the driver’s side also requires dropping the steering rack. No clue if that is a part of replacing an alternator.
When my guy priced out replacing my mounts, that was a chunk of the $800 cost.

 

2 mounts were replaced...are there 4?

Very little labor costs since they were there..

Had all pulleys replaced and belts too...

 

No no, two motor mounts and 1 trans mount.

 

Awsome...

one less thing to replace....and think about