Ceramic brakes
Discussion
I was looking at a 911 turbo S yesterday in Porsche C Bristol and noticed that the surface of all four ceramic discs were covered with small spiders web like cracks. I ask the salesman if they had noticed this , Doh was the response. The car was brand new awaiting the customer. I have ceramic brakes on my 997.1 T but they do not have cracks all over them and I doubt that I would have bought the car if seen anything like that. So anyone know if Porsche has changed the recipe for the brake rotors. I also noticed that the paint finish was rather poor very orange peal like, looked to me as if it had been wet on wet sprayed and with no effort having been made to finish the paint work after spraying or between coats. This to me is very poor on a car of this value, even Lotus hand finish their cars.
RAWENG said:
I was looking at a 911 turbo S yesterday in Porsche C Bristol and noticed that the surface of all four ceramic discs were covered with small spiders web like cracks. I ask the salesman if they had noticed this , Doh was the response. The car was brand new awaiting the customer. I have ceramic brakes on my 997.1 T but they do not have cracks all over them and I doubt that I would have bought the car if seen anything like that. So anyone know if Porsche has changed the recipe for the brake rotors. I also noticed that the paint finish was rather poor very orange peal like, looked to me as if it had been wet on wet sprayed and with no effort having been made to finish the paint work after spraying or between coats. This to me is very poor on a car of this value, even Lotus hand finish their cars.
+1 on the paint. The last couple of times I've been in to an OPC, I've noticed the paintwork on several 991s and Cayennes to have a strong orange peel finish - very much as though they'd put too much paint on in a single pass. Far worse than my 997.2 and, were I taking delivery of a new car with such a finish, I'd reject it out of hand until they either provided a car that was finished properly or had carried out a professional paint correction.
I've detailed 2 991 Turbo S's in the last 10 days and can confirm the discs have what look like cracks (I've got pics on my phone) but I'm assuming its normal as the Aventador and DBS's I've done recently were also the same and all pretty much brand spanking new.
As for orange peely paint - you're going to get this on every single new car nowadays unless you're buying a Veyron or possibly a Rolls Royce!
As for orange peely paint - you're going to get this on every single new car nowadays unless you're buying a Veyron or possibly a Rolls Royce!
ClarkPB said:
I've detailed 2 991 Turbo S's in the last 10 days and can confirm the discs have what look like cracks (I've got pics on my phone) but I'm assuming its normal as the Aventador and DBS's I've done recently were also the same and all pretty much brand spanking new.
As for orange peely paint - you're going to get this on every single new car nowadays unless you're buying a Veyron or possibly a Rolls Royce!
As a detailer, how much work does it take to take out the orange peel from a new car? or can you?As for orange peely paint - you're going to get this on every single new car nowadays unless you're buying a Veyron or possibly a Rolls Royce!
My 991 S in Aqua did not have any noticeable orange peel. Quality of paint was excellent.
My E92 m3 on the other hand was horrid. Jerez orange peel black. Had to have it wet sanded and it did look much better afterwards. If you do it properly you can have it polished again.. Just need to make sure they don't take off too much clear coat.
My E92 m3 on the other hand was horrid. Jerez orange peel black. Had to have it wet sanded and it did look much better afterwards. If you do it properly you can have it polished again.. Just need to make sure they don't take off too much clear coat.
mrdemon said:
Most cars are 2 coats the colours under the lacquer , the colours got orange peel, wet sanding is not going to touch it.
Also if you wet sand the clear coat , you cannot sand it again if you scratch it.
What complete and utter nonsense. Also if you wet sand the clear coat , you cannot sand it again if you scratch it.
Did you know that by often just sanding pack the "peaks" of the paint (I.e the parts that give the OP effect) you can actually remove less clear coat than conventional compounding? In general, approx removal of 10 microns or even less can produce orange peel free results.
To further add evidence of your above comment being inaccurate see here (M3 with Clear Coat having the orange peel removed safely) http://www.detailingworld.co.uk/forum/showthread.p...
If you attack a car with the wrong grade of papers and without the correct paint gauges and know how then you could be in big trouble, however an experienced detailer will get the desired results safely and retaining a more than healthy level of clear coat or paint.
This is from a Ferrari Enzo we had in last year. The bumper had been resprayed (colour then several coats of clear coat) which I then sanded back to reduce the orange peel (not remove completely as it wouldn't match the rest of the original paint) and sharpen it up. If you look at the reflection of the overhead light strip on the nose compared to the right hand side you can see the difference with and without sanding. From memory this took about 5 microns off which is nothing.
Edited by ClarkPB on Thursday 14th November 22:39
mrdemon said:
Most cars are 2 coats the colours under the lacquer , the colours got orange peel, wet sanding is not going to touch it.
Also if you wet sand the clear coat , you cannot sand it again if you scratch it.
Not true. The peel effect comes from the reflections that the clear coat creates. In broad terms it's clear coat that's put on quite thick to the point it is almost running, hence the peel effect. Sanding the clear back down gets rid of this effect. Also if you wet sand the clear coat , you cannot sand it again if you scratch it.
The peel effect is never in the base coat colour, unless it's put on wrong.
So it looks like the latest crazy paved rotors that I viewed are normal. This must now make it very difficult to inspect the rotors looking out for early signs of larger cracks forming and possible failure. Cant say that I like the look of them.
My own view of the poor paint finish is that they have applied wet on wet layers of paint and only bothered to compound the surfaced that are horizontal as a cost cutting measure. Either that or the guy had a bad back and could not bend down to do the sides of the car. Its all very ford focus and not good enough on a prestige car of this value. Poor show Mr Porsche.
My own view of the poor paint finish is that they have applied wet on wet layers of paint and only bothered to compound the surfaced that are horizontal as a cost cutting measure. Either that or the guy had a bad back and could not bend down to do the sides of the car. Its all very ford focus and not good enough on a prestige car of this value. Poor show Mr Porsche.
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