911 Carrera 2 Targa F6-3600cc 3.6L SOHC (1992)
engines. Only cap-head bolts used in the turbo engine are available. The sealing of the 8x55 cap-head bolts, however, is different for normally
aspirated and turbo engines.
5.
The following information for attaching the camshaft housings to the cylinder heads applies only to engines using the cap-head bolts.
For the normally aspirated engines, there are two (2) possible procedures:
1.
When repairing engines with cap-head bolts, the cap-head bolts can be re-used. Before assembly, clean the threads of the 8x55 cap-head
bolts using a steel brush. Remove all grease/oil. Coat the bolt threads with Loctite 574 and assemble. Install the 8x3O cap-head bolts
without sealer.
2.
Assemble the engine using the 8x55 cap-head bolts used for turbo engines. Seal the threads of the bolts using "high temperature" RTV
sealer. Install the 8x3O cap-head bolts without sealer.
Color differences between sealers:
Microencapsulated cap-head bolt:
Dry blue sealer on thread
Loctite 574:
Bright orange
Permatex high-temp RTV:
Red/brown silicone base
For the turbo engine, only one procedure is to be used:
When repairing engines with cap-head bolts, the cap-head bolts can be re-used. Before assembly, clean the threads of the 8x55 cap-head
bolts using a wire brush. Remove all oil/grease. Coat the 8x55 bolt threads with Permatex high-temp RTV and install. Install the 8x3O
cap-head bolts without sealer. Tighten torques are the same as before:
Camshaft housing bolts:
8x55 and 8x30 - 23 N-m
Intake manifold bolts:
6x35 - 10 N-m
Parts Information:
Part Number
Description
900 067 350 02
8x55 cap-head bolts
999 218 081 02
8x3O cap-head bolts
900 075 345 02
6x35 cap-head bolts
PNA 915 345 40
Permatex high-temp RTV
PNA 043 010 00
Loctite 574