Reply to "351C lubrication system & lubricants"

quote:
can quickly turn the valve springs blue.... which happens around 550F I think.

From my experience non-ferrous materials can start turning blue at around 400 degrees F. When we sweat parts together we try to keep the temps at or below 350 degrees F. Above 400 degrees you are tempering the parts and the metallurgical changes to the pieces can be destructive depending on the application.
Jeff

2/3/1410:21 PM

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