OE Exhaust Valves, Sodium |
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OE Exhaust Valves, Sodium |
914werke |
Apr 1 2006, 10:04 PM
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#61
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"I got blisters on me fingers" Group: Members Posts: 10,138 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest |
I know Jake suggests tossing these, but unfortunantly Im rebuilding a set of heads. Id like to keep them stock, but Im more concerned about longevity.
Is there anything that can be done to improve thier function? Cryo? (IMG:http://www.914world.com/bbs2/html/emoticons/sad.gif) |
TimT |
Apr 3 2006, 08:22 PM
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#62
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retired Group: Members Posts: 4,033 Joined: 18-February 03 From: Wantagh, NY Member No.: 313 |
yeap 911s are dry sumped... which has EXACTLY zero to do with cam/valve lubrication/cooling funny thing.. all this talk about stainless steel vs sodium filled valves.. FWIW many thousands of 911 engines are out there as we type with sodium filled exhaust valves. Been running really high output air cooled engines for years.. and have never had an exhaust valve failure... My 800+ hp turbo engine has sodium valves, and spins to 9000rpm. I only replace valves when they dont measure to spec.. I think our 996GT3RS engine has sodium filled valves..Ill check soon |
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