Porsche 911 GT3 Cup 2018 Techical Manual page 32

 Check the installation position of the sealing ring by using a caliper gauge to
take measurements at four points from the crankcase flange to the flat part of
the steel ring (arrows)
1.6.3.8
Information
 If the comparative values exceed the maximum difference, press the sealing ring
on again using the insertion tool
Version: 4/20/2018
Measured depth is approx. 4.5 mm (0.18 inches)
•
Maximum permissible inclined position is 0.5 mm
•
(0.02 inches)
Engine Engine
911 GT3 Cup (991 II)
MY 2018
31