Hardening valve stems!
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Topic author - Posts: 1357
- Joined: Thu Jan 10, 2019 5:47 pm
- First Name: Les
- Last Name: Schubert
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Hardening valve stems!
I thought people might find this “interesting/amusing “
I haven’t personally tried it.
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- First Name: john
- Last Name: karvaly
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Re: Hardening valve stems!
How many people stretched a valve?
I have seen pictures & descriptions of valve stems being heated above the guide area & pulled to lengthen.
How did the head get squared back up to the stem?
I have seen pictures & descriptions of valve stems being heated above the guide area & pulled to lengthen.
How did the head get squared back up to the stem?
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- First Name: David
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Re: Hardening valve stems!
Les, thanks for posting this. Is it possible the valve would need to be water-hardening steel for it to work? Lot's of left over used valves here in the engine shop, I'll try it soon.
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Topic author - Posts: 1357
- Joined: Thu Jan 10, 2019 5:47 pm
- First Name: Les
- Last Name: Schubert
- * REQUIRED* Type and Year of Model Ts owned: 27 roadster 13 touring
- Location: Calgary
Re: Hardening valve stems!
David
Just something I found in a “vintage “ welding book. Most steel will harden when quenched like this.
Just something I found in a “vintage “ welding book. Most steel will harden when quenched like this.
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Re: Hardening valve stems!
Les,
There's a quite detailed paper on valve cooling here:
https://fredstarr.com/wp-content/upload ... ooling.pdf
It's not related to your post but I think you would find it interesting.
Fred Starr (retired UK metallurgist) has written a few other papers on the history of valves that are worth tracking down.
There's a quite detailed paper on valve cooling here:
https://fredstarr.com/wp-content/upload ... ooling.pdf
It's not related to your post but I think you would find it interesting.
Fred Starr (retired UK metallurgist) has written a few other papers on the history of valves that are worth tracking down.
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- First Name: Philip
- Last Name: Thompson
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Re: Hardening valve stems!
i would rather have the valve wear than the lifter