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rust spreading like locus.


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hoader
New User

Aug 2, 2017, 3:55 PM

Post #1 of 7 (438 views)
  post locked   rust spreading like locus.  

I have a 2004 Chevy Trailblazer. I am grinding all the paint blisters where rust is spreading. it is not going to be a new looking car but I want to slow the rust to a crawl. The tail gate (hatch) has rust in 3 places. Each lower corner and below the hatch handle. I am usint a body grinder with less than 40 grit sanding pads. The rust goes through the first sheet. There was material underneath that didn't shine up. Aggressive sanding broke this material to show it is another layer of metal that is completely rusted. There is also a joint where inside skin of metal makes 3 layers. It is horizontal by the latch then bends down at 90 degrees to meet the joint. There is rust here too. Question: does that middle peace of crap all have to come out? Would rustoleum primer stop the spread if the crap is not removed? I would rather not work that hard if the rustoleum would keep the rust in check without removing the crap. Crazy
Thanks hoader


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 2, 2017, 4:51 PM

Post #2 of 7 (436 views)
  post locked   Re: rust spreading like locus.  

I hate to tell you but all your work is futile. You will not slow down the rusting one bit. You may be able to temporarily hide it but you will not slow anything. You may even make it worse.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



hoader
New User

Aug 2, 2017, 8:52 PM

Post #3 of 7 (423 views)
  post locked   Re: rust spreading like locus.  

Hammer Time

I don't understand! Removing the rust and patching the holes will make things worse than doing nothing. There are TV reality shows where people take a wreck and make it look like new. Why do they bother refurbishing them if it is going to rust apart in a few years. The way I see it, I remove the rust, fill in holes when rusted through, clean it up, prime with rust inhibitor then paint and seal. Explain where I am going wrong with my plan.
Thanks hoader


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 3, 2017, 2:16 AM

Post #4 of 7 (418 views)
  post locked   Re: rust spreading like locus.  

Nothing you are doing will stop the rust from spreading. The ONLY way to stop the spread is to completely cut out ALL of the rusted metal and weld in new metal. Nothing short of that will even slow down the rust.

You can hide it temporarily but it will be back before you know it.

If any of the rust has gotten into the structural metal or frame, you are just spinning your wheels and nothing will stop it.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Aug 3, 2017, 2:18 AM)


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Aug 3, 2017, 5:03 AM

Post #5 of 7 (403 views)
  post locked   Re: rust spreading like locus.  

Real rust not isolated is generally fatal to metal and what it's attacking. You really don't stop it at best cut out an area or replace it totally. When that invades mandatory items of structure of a vehicle it will render it unfit to use and for practical purposes unfixable as HT said. It's #1 where I am in a rust belt to wipe out vehicles that even run perfectly otherwise,


T



hoader
New User

Aug 3, 2017, 11:36 AM

Post #6 of 7 (394 views)
  post locked   Re: rust spreading like locus.  

Thank you guys Hammer Time and Greenleaf

This is exactly what I needed to know. That middle layer I'm complaining must be removed. I now have a plan of action that will extend the trailblazers lifespan. Very helpful.
Thanks a lot hoader
Cool and solved.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Aug 3, 2017, 2:09 PM

Post #7 of 7 (383 views)
  post locked   Re: rust spreading like locus.  

Good luck but don't expect magic from products. I fight with rust on anything exposed to road ROCK SALT specially catch any chip or scratch right away. FYI rust/oxidation is a disease and grows on it's own is actually adding material till metal falls off. It's not over till the last pinhole of it is really gone.


Huge battle life long with it. For unseen stuff like brake, fuel lines, flare nut fittings along and under cars spray with literally spray grease and use a lot saves that wild surprise quite well actually. Don't forget back sides of things when there like inside doors just lighter something like a WD-40 product should help but in the end rust wins,


Tom


PS: I'll close this out and YOU may ask any moderator to re-open upon request........







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