Does anyone have any expereince using the rear spring packers? item #15 in the illustration below.

https://www.jaguarclassicparts.com/u...nd-spring-rear

Specifically, how much ride height change can be expected from one packer/spacer?

For example, with the front spring spacers we know that a .125" spacer yields about .375" difference in ride height.

Cheers and thanks
Doug

 

Doug,

Never seen any on the rears of all the cars I have done. #2 sits inside the spring and thats it.

Interesting they should list them for "Convertible, and 5??? per car.

 

I have a feeling that the convertible has more weight over the rear, what with beefed up sills, hood mechanism, hood when down, and that huge bracer plate across the boot behind the tank. If so, it might be that the car might/could sit a bit lower that looked nice, so a packer would cheaply fix the problem. I have never seen one on any of the (too many!) coupe rear axles I have taken apart.

 

Thanks for the replies. I've never seen 'em on a car, either.

Here's why I ask.

The left rear of my car sits just a tad low, about .625" or so. Practically speaking this is of no consequence, IMO. But, I've seen it....and it can't be unseen. It has been an itch for a long time. I thought these spacers would be a great way to "trim" the ride height.

I bought four. Assuming (ha ha) a 2x or 3x multiplying effect, using all four would bring me closest to level.

I'll let everyone know what happens.

Cheers
DD

 

I have seen many sets as I prefer to use late convertibles as parts cars for projects. The US passenger or right hand side side has the battery and weight of the convertible motor assembly so one of the springs may have 2 spacers.
I would suspect this would only be the case in the later years when Ford really increased the quality and precision of the XJS.

 

There were 2 thin ones per side on my 94 XJ40 and yes the ratio of 3:1 is right for the rears too. Apparently used to trim the height of the rear end and account for variances is spring length etc.

I changed the old springs for some XJ8 springs a few years ago and left one in per side, ride height is just about bang on.

HTH

Larry

 

Doug did you install these? I want to raise the rear of my XJS 20mm as the Bilstein's lowered the rear due to the different spring perch.

 

Not yet, Warren.

But, soon, I hope

Cheers
DD