Re: 69 big block starter heat shield
 

metallurgical hump

Re: 69 big block starter heat shield
 

OK....
http://images.iwoot.com/alts/humdog_alt1.gif

Re: 69 big block starter heat shield
 

Is that you humping Ricks(MR70)leg? We know who the real hump is.. ya hump.

https://www.yenko.net/ubbthreads/imag...ns/naughty.gif

Re: 69 big block starter heat shield
 

About 6 months ago I asked a friend at a chevy dealer to do a search for a heat shield for my L78 nova. He found two originals (galvanized metal) in Texas. I bought one, and it arrived in an original 1969 GM filthy package. I paid about $8 for the part and around $12 for shipping.

Re: 69 big block starter heat shield
 

Itys a pic of Charley with one of those Chinese aardvarks he has.

Re: 69 big block starter heat shield
 

Shut up you Tick.............

Re: 69 big block starter heat shield
 

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Galvanized steel is magnetic, stainless is NOT. Use a simple magnet if in doubt.

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Some kinds of stainless steel are magnetic, others are not. My heat shield certainly seems to be stainless, it is nice and shiny and has no rust or pitting. But it attracts a magnet too.

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Very interesting to say the least. Sounds like you have a nice original carbon steel shield survivor. Over time, galvanized parts will lose their 'garbage can spangle luster', and look like stainless, silver cadmium, or zinc chromate.

What coating do you think is on your part? Or...what alloy do you think it is made of? I'am skeptical that it is stainless.

Lets help Belair get over the 'metallurgy hump'... https://www.yenko.net/ubbthreads/imag...lins/beers.gif

Re: 69 big block starter heat shield
 

A lower grade of stainless steel,302, will become magnetic after it has been "worked". By worked I mean formed,bent,and rolled.I can't say for sure what the shields were made of but this is a very good possiblity.


Steve https://www.yenko.net/ubbthreads/imag...lins/beers.gif

Re: 69 big block starter heat shield
 

Yes 200 and 300 series are non magnetic, however if worked some may become slightly magnetic. I believe the 400 series is magnetic.

Re: 69 big block starter heat shield
 

Steve could you comment on the grain structure of these metals for us ?

Re: 69 big block starter heat shield
 

I found an NOS Later Galvanizied shield #361443.
He wants $60.00 for it.Is there a major difference from the earlier issued #3954224?

Re: 69 big block starter heat shield
 

I am just about ready to put you over my knee and paddle you. https://www.yenko.net/ubbthreads/imag...mlins/haha.gif

Re: 69 big block starter heat shield
 

We need to see some phase diagrams!!

400 series is magnetic. My chambered exhaust is 409, and it's magnetic.

Re: 69 big block starter heat shield
 

Here is one that just ended on Ebay.A good picture and detailed description too.
I recognize a few of those bidders.
http://cgi.ebay.com/ebaymotors/ws/eB...tem=4500173625