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Has Anyone Undercoated Their Car?

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glemon said:
I would hope shop that is going to apply it would know/have the surface in the proper condition for application. In my experience rust through almost always starts from the inside out, but I don't live anywhare near saltwater, just salty roads in the winter that midwest cars are exosed to.
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I should think so! But I'm not convinced yet it's the right thing to do and since the paint shop is slammed and not in any rush to do it, I've got plenty of time to decide. I'm going to keep researching the subject until I can make an informed decision. The last thing I want to do is alter the car's originality permanently, even if it means that I am preserving it at the same time. Surely a good prep and paint of the undercarriage will be sufficient for the amount of driving I'll do, so I am still dubious about doing it.

Thanks to everyone for your thoughtful feedback!

:-D

Jeff
 
On a fresh resto many people are going with a bodycolor rino liner sprayed onto the under sides of the wings and pans.I like this but it is not cheap.IMHO all boxed sections should be coated with a wax/lanolin whatever that provides a water repelant/seam sealant effect.
MD(mad dog)
 
61TR3A said:
I should think so! But I'm not convinced yet it's the right thing to do and since the paint shop is slammed and not in any rush to do it, I've got plenty of time to decide. I'm going to keep researching the subject until I can make an informed decision. The last thing I want to do is alter the car's originality permanently, even if it means that I am preserving it at the same time. Surely a good prep and paint of the undercarriage will be sufficient for the amount of driving I'll do, so I am still dubious about doing it.

Thanks to everyone for your thoughtful feedback!

:-D

Jeff
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Hello, I'm across from you on the east coast in Wellington and am restoring my 1959 TR-3A. Would be interested in your eventual choice from the above discussion a couple of years ago, as I am considering a product called U-POL Raptor which comes in a tintable version to match body color. Don't have quite the salt problem you do unless I drive along A1A, but still want the added protection. Regards, Walter
 
Recommended somewhere above and still (my opinion) a very good choice:

Fluid Film

I made a long wand out of a bunch of those red tubes & some heat-shrink tubing. Can get deep into tiny openings.
 
Walter
I have done my Bugeye sprite with Raptor liner. I like it, but I have not put it to the test yet as the car is not yet on the road. The car was sprayed with a single stage polyurathane. I have heard it can be rolled on. The sprite was undercoated in multiple areas by the factory. I sprayed the floor pans (inside and out) and inner fenders with a 4 quart kit I got for about $100 on ebay.
Regards
Paul
 
I have finished the underside of the 250 and coated it with linex. I know that it is not right for the car, but I think that it will protect the underside from just about anything.
 
Thanks guys. These are very helpful suggestions and much appreciated. - Walter
 
I'm against undercoating on a grd up restoration. Coat it heavy with epoxy primer to seal, then paint. Give the car a fresh water bath often.

Marv
 
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