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Posted by Sherman in Idaho [24.32.202.166] on Sunday, February 24, 2013 at 02:41:42 :
In Reply to: 251/265 Sodium Filled Exhaust Valves posted by Vaughn in CA [108.79.204.18] on Saturday, February 23, 2013 at 20:55:30 :
Seems like I have an old book on industrial flathead variations and all the industrial versions had sodium-filled valves. It might be that the only engines that didn't get hardened valve seats and sodium-filled valves were the ones they put in the Plymouth cars.
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