Rail Dust? Real Visible After Zaino?

[evor1]

Every time I look at the Black Stang I see something new.



I Zaino'd (Z5) another layer last night and pulled car out into sun this morning to evaluate.



There is an area where there are thousands of little spec's in the paint. At the right sun angle it looks like I have metalic paint!



It is on a door, in the area under a mirror, about a 3' X3' area.



I am thinking either rail dust or brake dust. Car is a couple of months old.



I am assuming claybar, but after six or so coats of Zaino, what is the proper sequence?? Just go at it with claybar or do I need to strip Zaino somehow??



Since I have put all this time into it already, will it hurt anything if I wait till fall to get this crap off my paint. (I doubt I will, as it is bugging me now!)



Black is driving nuts. Just when I thought I was getting into great shape, I see this stuff.



Thanks For Your Help All!!!

 

[imported_memnuts]

Try the plastic baggy test over the effected areas. If it does not snag the baggy or feel rough claying may not rectify. Even so still try the clay. Clay will not remove Zaino. The other question is, if this isn't embedded metallic material then it could be factory/dealer overspray in which a mild abrasive may fix.

Aren't black finishes fun. See Sig:wavey

 

[EMJR]

Ok this one happened to me.

On camaro's the rear bumper is a catch basin for break dust and any other contaminants that the air pocket can bring in. And of course I zaino'ed without checkin.

I just used 3m's Swirl Mark Remover by hand and reapplied zaino and waalaa shine…. How do you spell WhaLa?

 

[imported_memnuts]

Ok this one happened to me.

On camaro's the rear bumper is a catch basin for break dust and any other contaminants that the air pocket can bring in.

The good point about this low pressure area created by the rear spoiler ( increased air velocity above resulting in negative pressure below leading to down force) is that it is a functional component and not a styling exercise. :xyxthumbs

I would still clay first before SMR'ing in order to alleviate the removal of all the Zaino protectant that he has layered. If this claying does not work than SMR. :wavey

 

[lonestar]

I just used 3m's Swirl Mark Remover by hand and reapplied zaino and waalaa shine…. How do you spell WhaLa?

It's spelled voila. It's a French word.

 

[imported_Aurora40]

The good point about this low pressure area created by the rear spoiler ( increased air velocity above resulting in negative pressure below leading to down force) is that it is a functional component and not a styling exercise.

Actually, you've got it backwards. The increased air velocity has the lower pressure. So if the air velocity is increased on top of the spoiler, you would generate lift. Look at an airplane wing (or a textbook) if this sounds odd. Most spoilers are a styling element and don't usually generate any real downforce. Or maybe I read your post wrong and you meant it flip-flopped.

 

[imported_memnuts]

Actually, you've got it backwards. The increased air velocity has the lower pressure. So if the air velocity is increased on top of the spoiler, you would generate lift. Look at an airplane wing (or a textbook) if this sounds odd. Most spoilers are a styling element and don't usually generate any real downforce. Or maybe I read your post wrong and you meant it flip-flopped.

:bow I stand corrected I had it backward :doh . :doh Thanks for setting me straight:xyxthumbs :wavey

 

[Taxlady]

As I understand it, spoilers on non-race cars are not just a style element. They have to do with air flow and turbulence. They certainly are not for down force on fwd vehicles. It has to do with some non-intuitive wind tunnel results.

 

[TortoiseAWD]

As I understand it, spoilers on non-race cars are not just a style element. They have to do with air flow and turbulence. They certainly are not for down force on fwd vehicles. It has to do with some non-intuitive wind tunnel results.

While OEM spoilers on cars typically do not produce downforce, they do decrease the amount of body lift that a car body encounters at speed. Also, some spoilers allow airflow that has become "unattached" from the body surface (usually shortly after the roof line on a sedan) a place to "re-attach". Air that is unattached will not flow smoothly over the vehicle, creating turbulence and drag at the rear of the car. OEM spoilers are often designed to counteract that turbulence (re-attaching the airflow to the trunk lid), thus decreasing drag and improving fuel economy.



Tort