355 What is that little nugget at the top / rear of the door?

It's shown on TAV. 123


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#18


The finish on mine is chipped too...


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I'm not planning on repairing it. All sorts of stuff is thrown up on my car at the track causing this type of "patina."

But you can have that part prepped and repainted.

 

It's not rust - it's made of aluminum - just needs rubbing down and repainting properly - exactly the same problem that happens to the door mirror stems.

Same part for 348 and 355

https://www.ferrariparts.co.uk/part/ferrari/62212100

 

Try putting a magnet on it and you'll find it won't stick (same as your bonnet, engine cover and wing mirror stem bases). Here are some pics from when I did mine about 10 years ago and they've been fine since. Just one minor point to note that although the outside is a gloss finish the inner side is matt.
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I do have bubbling on my mirror stems but not bad enough to get it done yet.

Are you sure you should be trusting this paint guy????!!!! LOL There's no reason why if rubbed down to bare metal and a proper primer applied why it shouldn't last. It is most definitely NOT rust - rust is brown whereas aluminum corrosion is like a white powder.

Apart from the magnet test, you could always spray the "rust" with some of the purple deionizer used for cleaning wheels/fallout. Rust will dissolve whereas this white powder won't.

 

To some people any metal corrosion is rust. No need to split hairs.

 

It's not about splitting hairs - if you look at post #4 the bodyshop guy was adamant it was rust and in post #6 the same guy says he will only paint it without warranty - bad sign in my opinion. He really should know his stuff better than that - the detail guy knew what it was.

I'm just an amateur but because I prepped the surface properly its lasted over 10 years with no signs of coming back so there's no reason why a decent bodyshop cant do the same.

 

It's oxidation caused by moisture contamination of the bare aluminium before painting, something as simple as a finger print can slowly set it off.

Mclaren and Aston Martin had huge problems with the same happening on their aluminium body panels.

Best bet is to dry bead blast to bare, spirit panel wipe and quickly etch prime then a sealer coat on top, after that normal auto paint will stick to it like the proverbial.

 

A slight side line but how do you get it out? Mine need double doing.


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There's 2 captive alan bolts/screws on the inside of the door just above the door lock screws. It was quite a while ago when I did mine and I had my whole door apart when doing so so I cant quite remeber whether you would be able to wriggle it out or not - my gut feeling is you'd be better off taking the inner panels off the door to give proper access.

My LHS one still needs doing so if there is enough interest I don't mind doing it and taking a few photos.

 

Thanks, I had mine unbolted, the door lining off but could not wriggle it out. Felt like something else was restricting it. I also see the rubber seal in the unit is very costly to replace.


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Try it with the window in the down position

 

Those people are wrong. Hairs need to be split. It's not all that hard to speak accurately.

 

Just thought I would chime in. Rust usually refers to metal/steel and corrosion refers to abc, aluminum, bronze, copper. Having said that the piece can be stripped and I would find fund a shop and have it powder coated. I belive in fact that it was from the factory.

 

I would also blast and power coat that bit assuming the surface finish is not too damaged, it could be however. Best of luck!

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