2008 430 exhaust silencer UK

Had the same issue

It only $2000aud genuine

2nd hand people want $2000-4000aud for genuine lol

I have had to wait 4 months though
Its due sometime this month

My nuts were rusted but came off easy and i used antisieze when re installing (i welded it up temporarily)

 

You can have the insulation replaced by cutting off the stainless outer covering, you can use rockwool which is a type of loft insulation, then refit a stainless cover. 2 of the flange nuts fit on studs, the other 2 are through nut and bolts. Use black allen bolts as these take the heat. ,you can use Aerolock nuts on the studs and bolts, look on e bay but avoid stainless as they can seize. Plated steel are fine.
Soak old nuts with wd40 overnight

 

Its a common fault, the insulation is breaking up into a powder, the exhaust tends to vibrate the box. If you do repack it, you are going to end up with a welding job. Might be an idea to do the long seam weld on the underside and just a few stitch welds where you can see them.
Cutting the stainless cover off needs to be a neat job so it goes back tidy

 

Can it just be left as it is? Any major issues apart from white dust everywhere?

 

Hey Guys,
I had the same issue so i thought yeah just dissect the muffler skin repack it and get it re tig welded well how wrong was I. The skin of the muffler did not tig up well we know the skin is st/steel but what else is in there. I had 3 different guys try to tig it had them stumped.
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You should have opened it up about an inch in, not on the edge, then you have the same material to weld. Is it magnetic at the weld and non magnetic on the oem cover material ? Might be stainless welded to mild steel ??

 

I had the four openings at the end welded up. Solved the issue and was only $100. That was about four years ago.

This thread talks to this solutions:

https://www.ferrarichat.com/forum/threads/a-solution-for-white-dust-in-the-f430-engine-compartment.363057/

 

I'm hoping this is after a year of use? If not, the poor welds are probably due to not cleaning the surface properly.

 

The exhaust can get into the metal and no matter how much you clean it you will not get it right

 

Normally this happens due to incorrect filler rod, or contaminants introduced by the cleaning process.

Use a stainless wire brush to prep the surface and correct grade filler rod or stainless MIG wire

 

Its a mess now, might be easier to get a piece of stainless cut to size and rolled to shape, put the gap to the bottom and fit 3 band clamps.