...The "real-deal". This is a set of 3.0 liter 911 RSR Twin-Plug Heads I just purchased. The heads are currently at Ollie's receiving the full restoration treatment (media-blast, decked, cc'ed, new guides, new stainless-steel valves, racing springs and Titanium Retainers). After 32+ years, I find it amazing to be able to find these rare racing engine parts in this excellent condition.
If anyone has the ATE factory 911 RSR Intake/Exhaust Sodium-Filled Valves available for sale, please contact me at "ajserrano@msn.com". BTW, thanks again Jeff!
SPECS: Casting #911.104.322.OR --- Casting Date 8/73 --- Intake Valves: 49mm / Exhaust Valves: 41.5mm --- Intake Ports: 43mm / Exhaust Ports: 43mm --- Spark Plug Thread Hole Size: 12mm
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Jeff Smith Ad on the Early 911S Registry (May 25, 2005)