924Board.org

leadfoot · Posted: Sat Dec 13, 2014 6:19 pm Post subject: heat shield metal

galvanized steel?
cheers
Stu
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1981 ROW 924 Turbo -
carbon fiber GT mish mash
LS1 conversion in progress...

jason c · Joined: 13 Jan 2014 Posts: 1018 Location: Nwi

Which ones?

leadfoot · Posted: Sat Dec 13, 2014 7:46 pm Post subject:

between the torque tube and exhaust near the firewall
_________________
1981 ROW 924 Turbo -
carbon fiber GT mish mash
LS1 conversion in progress...

MikeJinCO · Posted: Sat Dec 13, 2014 9:18 pm Post subject:

When I needed a starter motor heat shield I just used 26ga galvanized air duct. It is good for pretty high temperatures, and you should have a slight air gap anyway. I also found an old NOMEX(?) soldering cloth I had and used pop rivets to fasten it to the shield..
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Mike

'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild)

MikeJinCO · Posted: Sat Dec 13, 2014 11:28 pm Post subject:

I checked and the properties of galvanized are ok for 390 F indefinitely, at 480F(250C) the galvanize will start to pee(over extended time period)l, they did not include their TTT chart. At 750F the material properties will start to be affected. Mind that these are for continuous exposure to these temperatures.
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Mike

'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild)

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Choose the metal you want to work with and ceramic coat it?
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

jason c · Joined: 13 Jan 2014 Posts: 1018 Location: Nwi

The 944s use yellow, silver & clear zinc plating. Cadmium, was likely how the 924s were plated. They have more of a gold color than yellow. The heat shields that look like a grey bare metal were probably a grey or clear cad. I have a heat shield in very good shape, it doesn't appear to be the standard "flake" Galvanizing.

What are you trying to do, replate a part or make one from scratch?