911 RSR Cam Housings 47mm i.d. / 4-Journal Bearing Support
Picture here are the factory 4-Journal, 47mm Cam-Towers of a 911 RSR. As always, Ollie's did a fantastic job restoring these 2 pieces and they actually now look too pretty to install in my engine!
The yellow circle in this photo https://pbase.com/image/53649820 shows a modification to the spray-bar in the cam-towers to improve the lubrication to the camshafts. Thank you Ike!