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Author
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Topic: Underseal - winterizing the car
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indyphil
Gearhead Posts: 2354
From: Senoia, G.A. USA
Registered: Jul 2002
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posted 09-09-2002 08:26 AM
   
I will be putting new leaf springs on this week, as well as new fuel tank sender unit and stainless fuel pipe. While im under there I'm cleaning the surface rust off the underbody and was intending on painting it with a underseal. I dont intend on driving it much in the winter, but think this is a good idea anyway. So....
does anybody have any exeperience with doing this? was it hard work, did you use any special tools to make the job easier? I have a wire brush on a drill.
Did you use spray on or brush on stuff? I cant find brush on stuff anywhere. does the spray on stuff generate a lot of overspray? (im worried about the body and getting into a mess with the spray on stuff) Can a body shop do this for just a few hundred bucks?
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V8 Thumper
Gearhead Posts: 4376
From: Arizona
Registered: Dec 2001
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posted 09-09-2002 08:33 AM
quote:
Originally posted by indyphil:
Can a body shop do this for just a few hundred bucks?
If you do all the prep work, maybe. Like anything body-related, its labor intensive, parts/materials are the cheap part. Undercoating is good stuff (it's heavy though) provided that the surface is prepped throughly; i.e. REALLY clean and 'scuffed'. You're looking at a bunch of hours on a creeper, scraping and sanding. You'll look like a coal miner  A good high pressure washer (2000+ psi) could make quicker work of it, but be careful as to not blow holes in soft spots  work around the wiring carefully as well 
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indyphil
Gearhead Posts: 2354
From: Senoia, G.A. USA
Registered: Jul 2002
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posted 09-09-2002 09:05 AM
I hadnt thought of the weight aspect.
There seem to be different types, some have a lot of rubberizing stuff in them, and others less so. The pressure washer is an interesting idea to assist in the prep work. how about brush on Vs spray on, has anyone tried both? By the way what colour should the underbody be on a 68 coupe? I have maroon exterior and black interior, looks like underneath the car is maroon as well. Thanks for the help Phil
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MDF99
Gearhead Posts: 232
From: Hamilton, Ohio, USA
Registered: May 2001
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posted 09-09-2002 10:08 AM
After I had the car up on jack stands, I'd probably start off with a garden hose and a couple rounds of heavy duty degreaser/stiff brush scrubbings, then I'd get out the wire brush on a drill and give it a good going over, hose it off again, after it was dry I'd wipe it down with laquer thinner or similar, lastly I'd brush on a coat or two of Eastwoods corroless (rust encapsulator) or similar product. Eastwoods is a maroon color.------------------
Matt Fraley
1966 Mustang Coupe; 289, T-5, 9" 3.50
http://mdf99.tripod.ca/289_Side.jpg
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ekbeanctr
Gearhead Posts: 679
From: Middlebury, IN USA
Registered: Dec 2000
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posted 09-09-2002 03:10 PM
If you have access to a heavy duty chain falls and I-beam, I did my car by raising the whole front of the car about 7 Ft in the air and then did the front part, then changed ends and did the rear of the car.  Be very careful to make sure you have safety chains in place if you do this. After I had it all clean (sandblasted) I used Zero Rust to paint the whole bottom of the car, It came out real nice. ------------------
Have a Wonderful Day
CandyApple 65 Fastback
351W, 4 Speed
Versaille 9" Rear End
Global West Front End
[email protected]
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indyphil
Gearhead Posts: 2354
From: Senoia, G.A. USA
Registered: Jul 2002
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posted 09-09-2002 03:26 PM
Thanks for the great ideas, seems like some of you have used rust-free paint and not rubberizing undercoating. I need to read the directions on the paint cans at the local parts store. I dont think i can flip the car over or hoist it in the air though
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MDF99
Gearhead Posts: 232
From: Hamilton, Ohio, USA
Registered: May 2001
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posted 09-09-2002 04:05 PM
I've heard the stories about water getting in between rubberized undercoating and the metal surface and rusting it out fast. I've avoided the rubber stuff because of that. It'd be a good idea to seal the metal surface first before putting on a rubber product. Rubber undercoating probably serves better as a sound deadener than a waterproofer.
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