Isn't the biggest difference just in the exhaust valves themselves or is there really even a difference in them also. If black smoke means high EGT's then I wonder why the N/A's don't have the supposedly stronger valves instead. Like I said though I don't know if there is actualy a difference in them.
Quote from: Rabbit TD on August 04, 2009, 09:57:24 pmIsn't the biggest difference just in the exhaust valves themselves or is there really even a difference in them also. If black smoke means high EGT's then I wonder why the N/A's don't have the supposedly stronger valves instead. Like I said though I don't know if there is actualy a difference in them.my grandpa has dropped plenty of exhaust valves on n/a engines. he is on his fifth engine in his caddy just because it keeps eating valve heads. and i know i read somewhere that the turbo heads have sodium filled exhaust valves.
I doubt VW used sodium valves on consumer vehicles. They are expensive and very hazardous if the shade tree mechanic decided to cut one open, especially if he tries to put the resulting fire out with water. When I was at Federal Mogul, we had lots of restrictions on who could buy them.
Quote from: arb on August 06, 2009, 01:37:33 pmI doubt VW used sodium valves on consumer vehicles. They are expensive and very hazardous if the shade tree mechanic decided to cut one open, especially if he tries to put the resulting fire out with water. When I was at Federal Mogul, we had lots of restrictions on who could buy them.Vw used sodium valves in some air cooled engines and the TD's, cutting then opened isn't a hazard, you just throw it in a bucket of water and it neutralizes the sodium.
Quote from: rabbitman on August 06, 2009, 02:40:45 pmQuote from: arb on August 06, 2009, 01:37:33 pmI doubt VW used sodium valves on consumer vehicles. They are expensive and very hazardous if the shade tree mechanic decided to cut one open, especially if he tries to put the resulting fire out with water. When I was at Federal Mogul, we had lots of restrictions on who could buy them.Vw used sodium valves in some air cooled engines and the TD's, cutting then opened isn't a hazard, you just throw it in a bucket of water and it neutralizes the sodium.I learned something new on VW. Good to hear they are not shy. :-DSodium burns underwater and is likely to spontaneously ignite when you cut it open in air unless it is VERY dry air... Look further down at this scientist catching his kitchen on fire with a sodium filled valve. http://www.periodictable.com/Elements/011/index.html
Quote from: arb on August 06, 2009, 03:25:15 pmQuote from: rabbitman on August 06, 2009, 02:40:45 pmQuote from: arb on August 06, 2009, 01:37:33 pmI doubt VW used sodium valves on consumer vehicles. They are expensive and very hazardous if the shade tree mechanic decided to cut one open, especially if he tries to put the resulting fire out with water. When I was at Federal Mogul, we had lots of restrictions on who could buy them.Vw used sodium valves in some air cooled engines and the TD's, cutting then opened isn't a hazard, you just throw it in a bucket of water and it neutralizes the sodium.I learned something new on VW. Good to hear they are not shy. :-DSodium burns underwater and is likely to spontaneously ignite when you cut it open in air unless it is VERY dry air... Look further down at this scientist catching his kitchen on fire with a sodium filled valve. http://www.periodictable.com/Elements/011/index.htmlWell Alaska air is pretty dry I guess. I used a die grinder to cut mine, plenty of sparks there.