6 replies to this topic

[Sweany]

I thought this was informative.
about the sodium valves.

scroll down about a 1/4 of the page.

http://periodictable.../011/index.html

[mashin' metal]

neato info, thanks for sharing!

[Bentiron1946]

Those must be a joy to manufacture. I used some old valve stems to make my own bezel pushers for jewelry use. I made double sure from my mechanic that they were not sodium filled.
That's a neat web site thanks for link, I book marked it.

[Phil H]

I had an old racing motorcycle that had a sodium filled exhaust valve. I had a couple of spares, but they were as rare as hen's teeth and I certainly wouldn't have cut them up to make punches, etc. The theory was that at high temperature the sodium became liquified and circulated within the stem, thus transferring some of the heat at the head of the valve into the valve guide and into whatever medium the other end of the stem was in. In my case this was air, but more usually it was cooled by oil in the cam or rocker box.

[mashin' metal]

Phil H, on 02 September 2010 - 09:32 PM, said:

I had an old racing motorcycle that had a sodium filled exhaust valve. I had a couple of spares, but they were as rare as hen's teeth and I certainly wouldn't have cut them up to make punches, etc. The theory was that at high temperature the sodium became liquified and circulated within the stem, thus transferring some of the heat at the head of the valve into the valve guide and into whatever medium the other end of the stem was in. In my case this was air, but more usually it was cooled by oil in the cam or rocker box.

damn, have any pictures? board racer?

[Bentiron1946]

I didn't cut up sodium valves to make punches, that's not a good idea, just solid steel, that's OK.

[Frosty]

Sodium is dangerous fun stuff, we played with it some as teens. Got our refills from valves.

Frosty the Lucky.