Radius arm mount & weak bodypanel
#1
Radius arm mount & weak bodypanel
I've got an issue thats come up since switching to all poly racing spec bushings last year - the peg that the radius arm large bushing sits on has begun to work itself loose from the body floor panel, I can't believe how thin the metal is so not suprised but has anyone else run into issues here? I feel like its more metal fatigue from the rock solid polybush having zero give, though now there is rust around where the circular plate is welded (poorly) to the underbody.
How much downtime am I looking at to remedy these weak floor panels? Ive never done or paid for bodywork before.
How much downtime am I looking at to remedy these weak floor panels? Ive never done or paid for bodywork before.
#2
These are well known corrosion areas on the XJS, not really related to the bushings.
It is fairly straightforward but make sure that the rust hasn't spread in to the sills.
Bits are still available.
https://www.britishparts.co.uk/class...-mounting-p928
It is fairly straightforward but make sure that the rust hasn't spread in to the sills.
Bits are still available.
https://www.britishparts.co.uk/class...-mounting-p928
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ptjs1 (06-28-2019)
#3
There is a guy on UK ebay that sells repair panels for the part of the car that Steve's part "the cup" (linked above) is welded to. This is likely to be the real source of the trouble. Essentially, have a GOOD poke at the metal around the edges of the "cup" and see if it is weakened or perforated. If it is, grind out the weak parts first and see what is left. If the corrosion is localised to the area around the cup, it might well be sufficient to weld a repair plate onto the cleaned up panel, and then weld a new cup to it.
FWIW, I feel a poly at the small end only of the radius arm is probably the best plan. I think this is the guy who makes the repair panels:
https://www.ebay.co.uk/itm/Jaguar-XJ...QAAOSw6n5XrPRv
FWIW, I feel a poly at the small end only of the radius arm is probably the best plan. I think this is the guy who makes the repair panels:
https://www.ebay.co.uk/itm/Jaguar-XJ...QAAOSw6n5XrPRv
The following 2 users liked this post by Greg in France:
Grant Francis (06-29-2019),
ptjs1 (06-28-2019)
#4
Thanks these are super helpful. The metal around the cup is weak as in you can push it slightly, when applying alot of force, no visible nasty bubbling rust though the whole car underbody was sprayed in that Waxoyl stuff. I just find it ridiculous how thin the metal appears to be at a point where youd think you need more strength.
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ronbros (06-28-2019)
#5
The following 4 users liked this post by warrjon:
Grant Francis (06-29-2019),
Greg in France (06-28-2019),
orangeblossom (06-29-2019),
ronbros (06-28-2019)
#7
Very nice, after feeling how thin it is I will be suggesting my mechanic find a 1/2" plate of top tier steel and warm up the weldinh rig. Now I'm not super familiar with the structural layout of the car but is there a way to 'see' the other side of this thin floor panel and asses if rust is the factor?
I blasted the area with a solvent to remove my underbody coating I see two of 3 welds failed, some very light rust not more then the size of a quarter, and two rivets third hole is empty, also a small drill hole in the box beam segmemt, but this was behind a 1/4" thick layer of hard wax-oil spray and no rust at that side.
I blasted the area with a solvent to remove my underbody coating I see two of 3 welds failed, some very light rust not more then the size of a quarter, and two rivets third hole is empty, also a small drill hole in the box beam segmemt, but this was behind a 1/4" thick layer of hard wax-oil spray and no rust at that side.
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