Sodium Valves? |
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Sodium Valves? |
stugray |
Nov 18 2012, 12:45 PM
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#1
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Advanced Member Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
I was once told by one of the resident "experts" on this forum (who has not been around lately) that I should replace my sodium filled valves with stainless. However after visiting the local RSR racing mechaninc (who is machining my case and inspecting my heads), HE said that he goes out of his way to FIND sodium filled valves for race engines. He said that on Air-cooled engines, the sodium helps pull the heat from the heads.
Any comments or suggestions regarding sodium vs. stainless? I also heard that a simple change from two-angle to three-angle valve seats can increase flow by more than 20% with no other changes to the heads. Good news is that I should be re-assembling the engine without the deck height problems over thanksgiving weekend. Hope to have it running by Xmas. (IMG:style_emoticons/default/piratenanner.gif) Stu |
brant |
Nov 19 2012, 11:31 AM
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#2
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914 Wizard Group: Members Posts: 11,739 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
another thing I don't see mentioned in this thread....
finding used stock valves won't work if bigger valves are intended. most race motors go with stainless and also bigger valves as mentioned, stainless are available and affordable (in a large variety of sizes) I've run (used up) 3 different race 2.0/4's with stainless and bigger valves. never dropped a valve or seat in those 3 motors. (of course I had a great head builder for them also) |
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