Version: 16.12.2014 - Porsche 2015 911 GT3 Cup Technical Manual

Filling the cooling system
• Disconnect the quick coupling in the engine compartment and connect the
open ends to the two couplings of the filling device
• Switch on the pump; the system is being filled
• The device should be turned on for ten minutes to ensure proper filling and
venting
• Allow the engine to warm up (80 °C / 176 °F) and, if required, fill the
container up to the maximum level using the connected filling device
• The compensating tank cover must be closed during the entire procedure
NOTE
A special filling device should be used for filling the water system (7.1.6.2). This
device is distributed by Sobek. The filling device includes an electric pump that
pumps the cooling water from a tank into the system.

Version: 16.12.2014

Never open the cover of the coolant compensating
tank after reaching the operating temperature. The
system pressure would escape and will not be built up
again as the operating temperature has already been
reached. This pressure is, however, required to
increase the boiling point of the cooling water.
Maintenance
7.1.6.2
SOBEK Motorsporttechnik GmbH & Co.KG
Industriestraße 8
68542 Heddesheim
Tel.: +49 (0)62 03-40 43 90 0
Fax: +49 (0)62 03-40 43 91 8
E-Mail: info@sobek-motorsporttechnik.de
911 GT3 Cup (991)
MY 2015
295