Quote:
Originally posted by Bill Verburg
Now here's another one that some of you won't believe
The 3.6 liter 964 M64/50 doesn't have sodium filled valves either.
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quote:
Originally posted by randy webb
" Interesting. I wonder why?"
The 964 M64/50 had ceramic portliners fitted into the head before the aluminum was poured which became part of the head. Being bad heat conductors they reduced the head temp by 40 degrees C, which made the sodium filled valves unnecessary.
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S Reg 823 R Gruppe 246
1955 pre-A Carrera Speedster...x 1974 leichtbau..."Sascha"
"It makes me sad. Our cars were meant to be driven, not polished" - Ferry Porsche while surveying a PCA Parade concours field.
Last edited by Jim Garfield; 05-27-2005 at 03:46 PM..
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