Very important point on the sodium valves.
Hi Corey
Extremely good point about the sodium valves, same should be said of heating them with a torch. Problem of extracting stuck valves is pretty much a Flat Head and some L Head engines, where the valves are in the block instead of the head. Not sure if there are many of these that used sodium filled valves, but and it is a big but I think they were used in some hot rod applications.
Most if not all valve in head stuck valves can be handled by removing the head and using a bearing press to push out the valves.
Thanks for the reminder though because the next two restoration projects going into the shop have sodium valves. One of these did eat a sodium cooled exhaust at one point in its life with no major problems.
Cheers Phil
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