Discussion
Notice how it always seems to occur near the edge of a panel? Maybe this is to do with something changed by the rolling/shaping as said earlier. I did have the problem to the underside of my bonnet though, near the hinge area, it is flat there but it was next to the bolt holes
Maybe the answer is carbon fibre bonnet and wings, solves some of the issues (not doors and rear arches though).
Maybe the answer is carbon fibre bonnet and wings, solves some of the issues (not doors and rear arches though).
TBCReece said:
Thanks. In short, it comes down to the definition of "perforation".
The Motor Ombustmen website says "Through corrosion or perforation, is corrosion forming from inside a metal panel which is rusting from the inside of the panel and works its way through the panel from inside to out"
I guess as perforation comes from the inside out, this would apply here but as the panels aren't rusting, technically it's not perforation? Is that correct?
It's not perforation as it comes from the surface of the metal, not within or behind it. Essentially it's the interface between metal and paint where the problem occurs. As far as I know, if the panel is taken back to bare metal, properly cleaned and primed before painting the issue shouldn't re-occur. Trouble is, until recently, by default McLaren replaced any affected panels and the same issues can crop up on the replacements! So ultimately, repainting may be a better option provided it's done properly.The Motor Ombustmen website says "Through corrosion or perforation, is corrosion forming from inside a metal panel which is rusting from the inside of the panel and works its way through the panel from inside to out"
I guess as perforation comes from the inside out, this would apply here but as the panels aren't rusting, technically it's not perforation? Is that correct?
Can confirm that X350 XJs do suffer aluminum corrosion but atleast those are all over 10 years old and mine cost me £4k.
My Insight had very little aluminum corrosion (one bit on the drivers door) and that was 21 years old.
So it seems McLaren and Jag engineers need to speak to their Honda counterparts.
My Insight had very little aluminum corrosion (one bit on the drivers door) and that was 21 years old.
So it seems McLaren and Jag engineers need to speak to their Honda counterparts.
McLaren, Aston Martin, Ferrari, Jaguar - almost every manufacturer who uses Aluminium panels on their cars suffers from these issues.
McLaren could use electrophoretic coating on the panels and thus prevent/drastically reduce the corrosion but they don't. Why is anyone's guess - weight? cost? contracts with AzkoNobel? Who knows!
McLaren could use electrophoretic coating on the panels and thus prevent/drastically reduce the corrosion but they don't. Why is anyone's guess - weight? cost? contracts with AzkoNobel? Who knows!
ChocolateFrog said:
Can confirm that X350 XJs do suffer aluminum corrosion but atleast those are all over 10 years old and mine cost me £4k.
.
Mine has the oxidisation along the very bottoms of the doors, right on the last 20mm or so..
99% of the time you barely notice it as it’s so small and the car is a dark colour (BRG).
Some do seem a lot worse than others, although tbh, there’s far more important things to worry about with a 20 year old Jaguar, usually suspension of electrics related
105.4 said:
samoht said:
^ very helpful, sounds like the issue is indeed more widespread than I thought. Unfortunately.
So you're saying it's an issue with the aluminium panel that's caused during pressing/rolling of the panel itself? Such that however it's subsequently painted/repainted, the issue will keep recurring?
Yes. That is what I understand.So you're saying it's an issue with the aluminium panel that's caused during pressing/rolling of the panel itself? Such that however it's subsequently painted/repainted, the issue will keep recurring?
From my limited knowledge of metallurgy, it would make sense.
It’s purely down to poor preparation… (i.e. cost cutting).
Tobermory said:
My Honda has aluminium panels and hasn’t even a spot of bubbling. It’s 31 years old…
Do McLaren warranty resprayed panels and if so how long for?
I have a Honda and I'm in the same situation - all perfect.Do McLaren warranty resprayed panels and if so how long for?
My Gen 1 R8 started doing this in all the wheel arches when the car was 12-14 years old.
Streetbeat said:
1 year if resprayed, 3 years if new panel.
Are you sure? This conflicts with information I've seen from people who have been arguing the issue direct with McLaren.My understanding was that this is warranted until the car is 5 years old. If they replace panels when the car is 4.5 years old and the problem reappears on those new panels when the car is just over 5 years old - hard luck. There is at least one owner on McLaren owners club who's been told exactly that.
If the panels are repainted outside of the warranty, I think it's between you and the paint shop. And the (official) paint shop I discussed this with a few months ago said that they warranty their paint for life - but they do not warranty against this happening again. They said it's a McLaren panel issue, not an issue with their paint.
Obviously some people would dispute that.
davek_964 said:
Are you sure? This conflicts with information I've seen from people who have been arguing the issue direct with McLaren.
My understanding was that this is warranted until the car is 5 years old. If they replace panels when the car is 4.5 years old and the problem reappears on those new panels when the car is just over 5 years old - hard luck. There is at least one owner on McLaren owners club who's been told exactly that.
If the panels are repainted outside of the warranty, I think it's between you and the paint shop. And the (official) paint shop I discussed this with a few months ago said that they warranty their paint for life - but they do not warranty against this happening again. They said it's a McLaren panel issue, not an issue with their paint.
Obviously some people would dispute that.
I have an email from the Mclaren approved bodyshop to confirm, maybe it differs from aprroved bodyshop to approved bodyshop?My understanding was that this is warranted until the car is 5 years old. If they replace panels when the car is 4.5 years old and the problem reappears on those new panels when the car is just over 5 years old - hard luck. There is at least one owner on McLaren owners club who's been told exactly that.
If the panels are repainted outside of the warranty, I think it's between you and the paint shop. And the (official) paint shop I discussed this with a few months ago said that they warranty their paint for life - but they do not warranty against this happening again. They said it's a McLaren panel issue, not an issue with their paint.
Obviously some people would dispute that.
105.4 said:
ChocolateFrog said:
Can confirm that X350 XJs do suffer aluminum corrosion but atleast those are all over 10 years old and mine cost me £4k.
.
Mine has the oxidisation along the very bottoms of the doors, right on the last 20mm or so..
99% of the time you barely notice it as it’s so small and the car is a dark colour (BRG).
Some do seem a lot worse than others, although tbh, there’s far more important things to worry about with a 20 year old Jaguar, usually suspension of electrics related
davek_964 said:
Maybe, but that would suggest that the 3 year warranty on new panels is provided by the body shop not McLaren.
Either way, in my view my repairs are warranted, doesnt matter to me whether its Mclaren themselves or their approved bodyshop. What that warranty covers is a different matter entirely, hopefully i wont have to get into that, but up till now the bodyshop have been fantastic with any issues even just after the 5 year cut off.
105.4 said:
I can’t speak for the other planes and cars that you’ve listed, but the Jaguar X350 / X358 XJ’s ‘oxidise along the very bottom of the doors.
There’s guys on the Jag forums who’ve had there’s re-done 3-4 times by some very good bodyshops, but the problem always reappears after a few years.
From what I understand the issue is caused by a reaction during the manufacturing process, using steels presses / rollers to shape and form aluminium panels.
I can only assume that McLarens suffer from the same issue for the same reasons?
Thats utter rubbish about the Jaguars fellaThere’s guys on the Jag forums who’ve had there’s re-done 3-4 times by some very good bodyshops, but the problem always reappears after a few years.
From what I understand the issue is caused by a reaction during the manufacturing process, using steels presses / rollers to shape and form aluminium panels.
I can only assume that McLarens suffer from the same issue for the same reasons?
reddiesel said:
105.4 said:
I can’t speak for the other planes and cars that you’ve listed, but the Jaguar X350 / X358 XJ’s ‘oxidise along the very bottom of the doors.
There’s guys on the Jag forums who’ve had there’s re-done 3-4 times by some very good bodyshops, but the problem always reappears after a few years.
From what I understand the issue is caused by a reaction during the manufacturing process, using steels presses / rollers to shape and form aluminium panels.
I can only assume that McLarens suffer from the same issue for the same reasons?
Thats utter rubbish about the Jaguars fellaThere’s guys on the Jag forums who’ve had there’s re-done 3-4 times by some very good bodyshops, but the problem always reappears after a few years.
From what I understand the issue is caused by a reaction during the manufacturing process, using steels presses / rollers to shape and form aluminium panels.
I can only assume that McLarens suffer from the same issue for the same reasons?
That X350 / X358’s oxidise along the bottom of the doors?
That my X350 has oxidised along the bottom of the doors?
That many guys on the Jaguar forums have had the same issues?
That several on the Jaguar forums have had their doors resprayed several times only for the issue to reappear a couple of years later?
That the accepted understanding on the Jaguar forums and from my local Jaguar main dealer is that this issue is caused by a reaction between the metal rollers and the aluminium panels during the manufacturing process?
Or all of the above?
Gassing Station | McLaren | Top of Page | What's New | My Stuff