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stugray |
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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 |
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gothspeed |
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#2
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,539 Joined: 3-February 09 From: SoCal Member No.: 10,019 Region Association: None ![]() |
As long as the engine is well maintained and not abused you should be fine. The sodium valves installed by the factory in the past had a bad reputation of dropping the 'valve head' into the combustion chamber. However I am not sure if there was any abuse or neglect involved in those cases. But if you keep track of your valve adjustments regularly, you will get a fair warning if the stems are stretching before they would actually fail.
But as mentioned above ........ newer SS valves are inexpensive, plentiful and reliable. |
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Lo-Fi Version | Time is now: 17th June 2024 - 11:37 AM |
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