[Spridgets] exhaust wrap

[uniquelittlecars at yahoo.com]

Glenn,
   
  I agree with you. I lived 7 blocks from the beach for years. I could not have fancy rims or paint on my car because of the marine layer in the mornings. I have a Toyota we used to laugh about because after the first year there was tiny rust holes in the window pillar at the seam and a few other places. The joke was i wonder what kind of can was welded in that spot. I started parking it out side after that and the rust proved it never sleeps. There was hole appearing all over even in the bed from the salt that settled with the marine layer in the morning. Now i live about two miles from the ocean in Fountain Valley. The accelerated rusting of our vehicles stopped. I see no rust at all on my 1996 Chevy that i got new when we moved here. So where you live even in the same area makes a big difference. 
  My friend was out visiting from the mid-west. It was a real foggy day last winter. He said, i did not you guys got river fog. 
  So i guess where he lives the rust would not be sleeping. LOL
   
  Vigil

Glen Byrns <grbyrns at ucdavis.edu> wrote:
  I've used header wrap on the turbo exit pipe for years and haven't seen 
accelerated corrosion. I think the difference in experience across the 
country may be due to the climate conditions. When the header is hot and 
allowed to cool, moisture can only be drawn and condense on the wrap/header 
if there is moisture present. Those of us who pamper our cars with garage 
storage in California are driving our hot manifolds into a fairly moisture 
free environment for the "cool down". If I were parking my heated up Sprite 
by the beach or outside in high humidity, I suppose it would be more of a 
factor. As it is now, I'm quite sure the header pipe will outlive me.
There is absolutely no question that it has made a difference in the 
under-bonnet temps.

I only wrap the pipe exiting the turbo however, since wrapping the manifold 
before the turbo caused it to get so hot that the expansion increased the 
cracking problem with the original homemade manifold. The new one is 
thicker, better welded, and supported by a brace to take the turbo weight. 
No cracks yet!

Glen Byrns



> Hello all, I just finished reading an article about exhaust wrap which
> basically said it would severely shorten the life of the header.In other 
> words,
> "don't use it". Any thoughts out there? How about the coating for both 
> the
> inside and outside of the pipe that I see advertised? Some kind of 
> ceramic ?
> Summer is coming on and I need something to keep the heat down.Bob C
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