Primer that wont rust... - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Body - Exterior
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 11-10-2003, 03:21 AM
fox's Avatar
fox fox is offline
Canadian
 
Join Date: Oct 2003
Location: eh
Age: 26
Posts: 27
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Primer that wont rust...

I got a 82 Grand prix that im fixing up for when i turn 16 next year. The body had lots of dents, rust. i had sanded the car (not to bare metal), used bondo(never took all the paint off underneath) and primed the whole car up.

With all this damn salt on the road, a friend of mine has a car thats all in primer and its showing rust spots after a few months. After seeing that i want to do a better job on my car so that it doesnt rust too and the bondo crack and fall off since i never removed the paint.

Im going to get like a new hood, doors, and front side pannels at the auto wreckers for my car since they were pretty bad and got **** loads of bondo on them. then I am going to sand the car right down to the metal and i want to do it the right way.

The car wont be painted for a long time(maybe just keep it primer), so... my question is, what do i use? a Epoxy primer and like clear cote or somthing after so the primer doesnt absorbe water/moister?


Thanks

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 11-10-2003, 04:50 AM
302 Z28's Avatar  
Last photo:
Join Date: May 2003
Location: North Texas
Posts: 10,837
Wiki Edits: 0

Thanks: 1
Thanked 86 Times in 73 Posts
It's a bad deal to apply Bondo on top of paint, it will eventually let go. The only primer that will not allow rust after a period of time is epoxy primer/sealer. Epoxy primer requires no clear coat and can be left as is for ever.

Vince
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 11-10-2003, 07:01 AM
TooMany2count's Avatar
A Half Crippled Old SOB....
 
Last wiki edit: GM RPO build codes Last photo:
Join Date: Jan 2003
Location: Cahokia,IL..... Donate Blood Products & Sign your DONORS CARD
Posts: 807
Wiki Edits: 5

Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally posted by 302/Z28
The only primer that will not allow rust after a period of time is epoxy primer/sealer. Epoxy primer requires no clear coat and can be left as is for ever.

Vince

soooooooo true, we drove our 40 chevy for about 10 yrs in Epoxy primer & NEVER had a problem w/it....joe
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 11-10-2003, 07:29 AM
fox's Avatar
fox fox is offline
Canadian
 
Join Date: Oct 2003
Location: eh
Age: 26
Posts: 27
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
is the expoxy primer any stronger then the normal primer? ive just noticed the normal stuff scratchs easy and stains when i touch it with my grease hands. if not.. is ther anything i can put over top for a more durable finish? thanks again
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 11-10-2003, 07:49 AM
STUPID is as STUPID does...
 
Last wiki edit: Crankshaft Coalition Wiki Last photo:
Join Date: Nov 2003
Location: Stupidville, USA
Posts: 1,690
Wiki Edits: 1

Thanks: 11
Thanked 80 Times in 74 Posts
The problem is primer, any kind of primer, is not meant to "seal" the paint. It is still porous and will allow water, grease and whatever else that comes in contact with it to adhere and possibly soak into it. You really need to shoot some topcoat over the primer to seal it.
Mark
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 11-10-2003, 11:40 AM
302 Z28's Avatar  
Last photo:
Join Date: May 2003
Location: North Texas
Posts: 10,837
Wiki Edits: 0

Thanks: 1
Thanked 86 Times in 73 Posts
Quote:
Originally posted by astroracer
The problem is primer, any kind of primer, is not meant to "seal" the paint. It is still porous and will allow water, grease and whatever else that comes in contact with it to adhere and possibly soak into it. You really need to shoot some topcoat over the primer to seal it.
Mark
Not necessarily so, epoxy primer is a sealer/primer and will not allow moisture penetration, or bleed through from whatever is underneath. As stated, depending on what hardener you use with PPG K36, it can also double as a sealer.

There is primer, then there is epoxy primer, the two are not the same.

Vince
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 11-10-2003, 12:08 PM
Kevin45's Avatar
Just one of the guys
 

Last journal entry: Garage Toys
Last photo:
Join Date: Jul 2002
Location: Urbana, Ohio
Age: 57
Posts: 3,058
Wiki Edits: 0

Thanks: 1
Thanked 15 Times in 15 Posts
If you put primer on with RATTLE CANS you will need to remove it and do it correctly. Wet sand the whole car down with 360/400 wet or dry paper. Wash and dry it after that. Grind all rust down to bare metal, apply bondo where needed, finish off the bondo work, blow off the complete car, clean with Prep-Sol or other type of pre-cleaner, tape up the car and prime with epoxy primer.

Kevin
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 11-10-2003, 01:12 PM
Member
 
Last photo:
Join Date: Aug 2003
Location: Detroit, MI
Posts: 139
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Even epoxy primers need a top coat.

I used DP 90 black then used satin black lacquer on top.

From what I was told the UV light is problem for the epoxy primers. There was a magazine article that talked about the different ways to get a suede black paint job. I no longer have a copy of the article. I recall they even talked about John Deere flat black paint. Don't think I would use it but they talked about it.

One note some of the paint on my car has develop a polished look. Some of the polish came from the car cover others from washing it.


Have fun!
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 11-10-2003, 01:33 PM
STUPID is as STUPID does...
 
Last wiki edit: Crankshaft Coalition Wiki Last photo:
Join Date: Nov 2003
Location: Stupidville, USA
Posts: 1,690
Wiki Edits: 1

Thanks: 11
Thanked 80 Times in 74 Posts
Quote:
Not necessarily so, epoxy primer is a sealer/primer and will not allow moisture penetration, or bleed through from whatever is underneath. As stated, depending on what hardener you use with PPG K36, it can also double as a sealer.

There is primer, then there is epoxy primer, the two are not the same.

Vince
Yes, epoxy primers are called "sealers" but, they are used to seal the body work/bare metal/old paint from the new top coat. They will not seal all of this work from the elements. They will "protect" it for a time but, like Kevin said, sunlight and the elements will break it down very quickly then you will have a mess on your hands. Don't spray this stuff on your car expecting it to never rust because it will. If anyone is going to invest the time and effort to paint a car take the time to do it correctly. Yes it may cost some money up front but what it will save you down the road is worth it...
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 11-10-2003, 02:10 PM
302 Z28's Avatar  
Last photo:
Join Date: May 2003
Location: North Texas
Posts: 10,837
Wiki Edits: 0

Thanks: 1
Thanked 86 Times in 73 Posts
Again, I beg to differ. There is a nostalgia class of street rods that are finished in nothing but primer, epoxy primer. These rods cope with the elements quite well.

Vince
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 11-10-2003, 07:27 PM
fox's Avatar
fox fox is offline
Canadian
 
Join Date: Oct 2003
Location: eh
Age: 26
Posts: 27
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
uhh hmm getting lots of differnt replys...

im going sand my whole car to bare metal then i want to bondo any dents and stuff. ok then i wash the car down good with a cleaner then primer the whole car with spray/rattle can(epoxy primer) and done?



Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 11-10-2003, 07:51 PM
302 Z28's Avatar  
Last photo:
Join Date: May 2003
Location: North Texas
Posts: 10,837
Wiki Edits: 0

Thanks: 1
Thanked 86 Times in 73 Posts
Quote:
Originally posted by fox
uhh hmm getting lots of differnt replys...

im going sand my whole car to bare metal then i want to bondo any dents and stuff. ok then i wash the car down good with a cleaner then primer the whole car with spray/rattle can(epoxy primer) and done?



Spray rattle can primer is NOT epoxy, I don't care what it says on the can. Epoxy primer requires a catalyst to be mixed with it to cure. This is impossible to do in a spray can.

Vince
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 11-10-2003, 07:58 PM
fox's Avatar
fox fox is offline
Canadian
 
Join Date: Oct 2003
Location: eh
Age: 26
Posts: 27
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
ok... so then i will have to buy a spray gun?and need a air compress for a spray gun right? or after i strip the metal and do all the body work drive it somewhere to get primed?
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 11-11-2003, 11:54 AM
Kevin45's Avatar
Just one of the guys
 

Last journal entry: Garage Toys
Last photo:
Join Date: Jul 2002
Location: Urbana, Ohio
Age: 57
Posts: 3,058
Wiki Edits: 0

Thanks: 1
Thanked 15 Times in 15 Posts
Fox....go back and read thru what was posted. You don't need to sand the whole car to bare metal. You DO NOT want to use rattle cans. Also take a peek into the Knowledge Base. There are some very fine articles on body work with step by step instructions. The main thing is to do it right the first time. It may take a little or a lot longer but it will still be less time than having to do it over.

Kevin
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 11-11-2003, 10:27 PM
fox's Avatar
fox fox is offline
Canadian
 
Join Date: Oct 2003
Location: eh
Age: 26
Posts: 27
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
The Reason i want to go to bare metal is all the pits/chips in the paint under the primer i got right now, all the bondo get it all off, i also noticed when i went to bare metal i did see some surfarce rust in a few places, and just do a nice clean job.

i just talked to a friend and he has a air compresser and is able to borrow a spray gun from work.
Reply With Quote Quick reply to this message

Recent Body - Exterior posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 07:46 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.