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Fixing rust spots and touching up the paint as I have understood it

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Old Jan 25, 2006 | 05:47 AM
  #1  
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Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
Fixing rust spots and touching up the paint as I have understood it

I have been reading on various sites on how to go about fixing rust stains and touching up the paint. In order to make sure I have understood this correctly I am going write down how I understand this process should go. I am not asking this because I have not searched the forums or read various guides and whatnot, I just want to make sure I get it right.


The rust stains, I have gotten a few at the door and this is how I believe I should proceed after having cleaned and degreased the car.

-Get rid of the rust, use 80-grit sandpaper or use a rust-remover, or both.

-Clean the area, apply a little bit of primer and let it dry(for how long? days, weeks, months?)

-wet sand with 400-grit paper until its nice looking, wash it of with water and let it dry, then apply a second layer of primer.

-repeat process sans another layer of primer.

-wet sand again with 1500-grit and 2000-grit(I have heard some people use up to 4000??)

Now the paint should shine and look nice, I should let it dry(how long?).

After that I planned to touch up the paint, for that I have bought from Meguiars a: Claybar, Scratch-X, Deep Crystal Polish. I apply them in order, first work over the car with the claybar, then the scratch-x to get rid of the swirl marks. Then I polish the car and finally I add one or more layers of wax. Done.

Now what have I likely forgotten or done wrong here and what would you change/reccomend?
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Old Jan 25, 2006 | 08:00 AM
  #2  
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
I'm pretty certain I messed up that up, here is what I revised it to, using a guide at GMtips:
http://www.gmtips.com/3rd-degree/dox...nt/body-01.htm

-Get rid of the rust, use 80-grit sandpaper or use a rust-remover, or both.

-Clean the area(this includes getting rid of rust and using body filler).

-Apply primer, let it dry

-wet sand with 400-grit paper until its nice looking, wash it of with water and let it dry.

-apply wax and silicon remover.

-apply sealer and let it dry(what brand? how long?)

-add the actual color(do I need special primer paint or what), two layers reccomended. From the pictures in the guide it looks like the color will have shine and all right of the bat. all I am going to use is likely a spray can or a small brush.

-wet sand again with 1500-grit and 2000-grit, but then the guide ends. I am not quite sure how to proceed.

Last edited by HisDivineShadow; Jan 25, 2006 at 09:11 AM.
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Old Jan 27, 2006 | 01:13 AM
  #3  
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
OK, nevermind then.

Fortunately for me I got lucky and found my lost Haynes book in a closet and it goes into detail how I should do it. As for the actual touch-up paint it doesn't mention any clearcoating, only rubbing and waxing after it's done.

I also bought a sand-blasting pistol to get rid of the rust and some other tools & material like a dremel, body filler, grey primer, autosol(alu-polish not related to this) and so on.
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Old Jan 27, 2006 | 01:52 AM
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
P.S. I plan to sand and polish my rims as well later, according to the gudie I saw at GMtips.com something called Scotchbrite is required, what is that? I found it at a local store but it was 21 euros, bleedin' expensive that. Is it worth it?
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Old Jan 30, 2006 | 05:36 AM
  #5  
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
I am pretty sure nobody is going to reply to this either(Have I done something wrong?) but I am still going to write it out so I can look at it myself later. Having done more and more research on what I need and what I should do, this is my current plan.

-Remove the rust with sandblasting. I have bought a sandblasting gun that is for small points only, worked just fine on my air-box.

-Clean area that has been sandblasted so there is no dust. I was thinking degreaser.

-Apply 1 coat of primer, I got Plastic Padding rustprotecting primer and let dry for 12 hoursm, can says 30 minutes but I am trying to be safe here.

-Apply bodyfiller as needed, I got Ultima all-round automotive filler
Yes I am putting the putty on top of the primer. Heard you shouldn't put putty right on the bare metal

-Sand and smooth the body filler after it's dried with 400 grit sandpaper, dry sanding.

-Apply 2 coats of primer(waiting 10 minutes between each layer) and let dry for 12 hours.

-Sand primer as well with 400 grit paper, so it's smooth.

-Apply basecoat(color code: WA-8555) 2 layers and let dry(how long? I heard 2 weeks)

-Apply clearcoat, 2 layers and let dry

-Buff with 3M Fine rubbing compound and wool pad

-Buff with 3M Glazing compound and foam pad.

Let it dry for two weeks.

Then I plan to being detailing work.

I have purchased Meguiars Clay bar quick detailing system, Scratch-X and Step II Deep Crystal Polish. I plan to wash the car, clean the paint with the claybar, use scratch-x to get rid of scratches and swirlmarks and then polish the car with the Step II polish and then give it two layers of wax.

That is my plan, for better or worse.
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Old Jan 30, 2006 | 07:06 AM
  #6  
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From: rochester,in.
Car: Forrest 91 t/a
Engine: 5.0 tpi w/underdrive/accel,full 3"
Transmission: 700r4
Axle/Gears: 3.73 pos
I don't know a hole lot about body work, but I've been R&D the rim issue. There is some very good info on this site about cleaning & polishing stock rims. also removing the clear coat.

Rich
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Old Jan 30, 2006 | 07:18 AM
  #7  
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
About the rims, this is the guide I was going to follow minus using my car to rotate the rims.

http://www.gmtips.com/3rd-degree/dox...els/wheels.htm

Buying a load of Eastwood products in a few days.
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Old Jan 30, 2006 | 08:34 AM
  #8  
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From: rochester,in.
Car: Forrest 91 t/a
Engine: 5.0 tpi w/underdrive/accel,full 3"
Transmission: 700r4
Axle/Gears: 3.73 pos
The page doesn't work
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Old Jan 30, 2006 | 08:49 AM
  #9  
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
Weird... it works just fine for me, both from work and at home

Here is what it says, without pictures:
This is only for smooth rimmed wheels. Do not try this with spoked or mag style wheels, or any wheel that your fingers can get into. Remove any jewelry, loose clothing, bracelets etc. If this catapults you across your garage, or any of your limbs....consider yourself warned.



One day at a car wash I sprayed some Castrol Super Clean on my wheels....BIG MISTAKE....it totally perpetrated the clear coat and clouded it.....and it would NOT clean or polish after that.



IMPORTANT: Since your car will be running in gear put blocks in front and back of BOTH front tires. REAL IMPORTANT: Before you jack up the car, put it in neutral and let it roll back against the blocks to take out slack.


I'm using my 85 Firebird to polish my 86 T/A wheels, they happen to be the same pattern........I know, I know, those are Camaro wheels on my Firebird........I didn't do it.



Jack the car up in rear and use jack stands securely....I also lowered the jack enough to rest car on stands and left it in place as a precaution.......it's a bad way to meet the neighbors....plowing your car through their living room.



I read about this guy that used his car to polish his wheels...I distinctly remember thinking he was nuts to jack up his car and spin his wheels to strip the clear coat and polish them.....but after trying 3 different commercial strippers and not a one of them even "phased" my clear coat.....I thought what the heck.....it's worth a try.....i went to the tire shop and had my tire and valve stem dismounted, then I pulled off all the weights.



Keep a bucket of water.......(you and your car are gonna' get real wet and dirty......)....keep the rim wet as not to scratch it. Use the following grades to get a smooth finish.
1. 320 or 400 wet and dry sandpaper...followed by
2. Scotchbrite
3. Then finish with #00 steel wool then progress to #0000 super fine steel wool.



Get two buffing wheels (don't mix compounds) and use:
1. Tripoli polish compound to start.
2. Then change wheels and buff with white rouge to finish.



You can buff your brains out and take it to any degree you want. My first wheel took ALL DAY, but my second took about 4 hours start to finish.



Good time to refinish the center. I chose "spray gray" by the Eastwood Company. It has a nice freshly cast look. Choose a name brand paint so you can match up a year or two from now in case you need to touch up a wheel in the future.



It's a good time to do some detail fenderwell work. I re-undercoated the well, touched up the brake parts and accessable frame parts, sprayed some oil on shock and sway bar nuts and bolts in case of future removal.



Remount the tire and valve stem. I installed:

New Center Cap $18.48
GM P/N 10097583

New Silver Bird Medallion $ 9.77
GM P/N 10036135

5 New Lug Caps $ 1.50 ea.
GM P/N 10028614
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Old Jan 30, 2006 | 12:56 PM
  #10  
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From: rochester,in.
Car: Forrest 91 t/a
Engine: 5.0 tpi w/underdrive/accel,full 3"
Transmission: 700r4
Axle/Gears: 3.73 pos
The link worked that time, All I have to say is WOW!! I would be very very careful trying this methed. It would work, and give you a nice finish in a short amout of time but, I like my hands. Let me know how it turns out when your typeing with stubs!

Sorry I just had to throw that in there!

check this thread

https://www.thirdgen.org/techbb2/sho...hreadid=189570

Rich

Last edited by ezliving4ume; Jan 30, 2006 at 01:00 PM.
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Old Jan 30, 2006 | 01:48 PM
  #11  
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
As I said I am going to use this method minus the part where I'd use the car to rotate the rim, I am going to do that manually.
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Old Jan 30, 2006 | 03:21 PM
  #12  
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From: Tenino, Washington
Car: 89 f-bird and some others
Engine: 3.4
Transmission: 700R4
Axle/Gears: 3.42
I believe I've read on here somewhere about spraying some type of chemical on the rusted area even after sanding it away and then using the primer. My dad has some stuff called 'rust-mort' or something like that. I can't remember the other names I saw mentioned.
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Old Jan 31, 2006 | 06:14 AM
  #13  
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From: rochester,in.
Car: Forrest 91 t/a
Engine: 5.0 tpi w/underdrive/accel,full 3"
Transmission: 700r4
Axle/Gears: 3.73 pos
So, whats the plan to get the rims to rotate?
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Old Jan 31, 2006 | 06:15 AM
  #14  
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
Originally posted by ezliving4ume
So, whats the plan to get the rims to rotate?
I was thinking I'd rotate while the rims where still
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Old Feb 3, 2006 | 02:20 PM
  #15  
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From: Massachusetts
Car: 87 Trans Am, 89 RX7
Engine: 350tpi,350carb
Transmission: T-5,t56
Axle/Gears: 3.42 Posi,4.11 posi
What is sandblasting? How much does it cost for the tools? Is it effective for a lot of rust?
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Old Feb 4, 2006 | 09:57 AM
  #16  
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
http://en.wikipedia.org/wiki/Sandblasting
Sandblasting is a generic term for the process of smoothing, shaping and cleaning a hard surface by forcing solid particles across that surface at high speeds. Sandblasting can occur naturally, usually as a result of the particle blown by the wind causing eolian erosion, or artificially, using compressed air. An artificial sandblasting process was patented by Benjamin Chew Tilghman on October 18, 1870.

Historically, the material used for artificial sandblasting was sand that had been sieved to a uniform size. The silica dust produced in the sandblasting process caused sillicosis after sustained inhalation of dust. Sandblasting may now only be performed in a controlled environment using ventilation, protective clothing and breathing air supply.

Other materials for sandblasting have been developed to be used instead of sand; for example, glass beads, metal pellets, dry ice, powdered abrasives of various fineness, powdered slag, and even ground coconut shells or corncobs have been used for specific applications and produce distinct surface finishes.
Now in order to sandblast you need:

1. Compressor, you need a storage of compressed air, this one can be somewhat expensive.

2. Sandblasting material, I bought 2.5liter(same as quart, almost) for ~5 bucks at swedish "Clas Ohlson".

3. Sandblasting pistol to attach to compressor hose, mine cost about $12.

Also an article I fond while googling:
http://www.autobodypro.com/tektips/a.../sandblast.htm
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