911 Carrera Coupe F6-3164cc 3.2L (1984)
Piston: Specifications
Piston Weight Classes
PISTON WEIGHT CLASSES
Weight Classes for Mahle Pistons
Pistons are weighed with accessories (piston pin, piston rings and circlips).
Complete piston weight in g
Weight tolerance within set
of pistons
Engine Type
930/21/25
Standard
613 to 617
--
617 to 621
-
Permissible tolerance = ± 4g
621 to 625
+
625 to 629
++
For replacements:
613 to 621
-- or -
Permissible tolerance = ± 8g
621 to 629
+ or ++
Weight Classes for KS Pistons
Pistons are weighed with accessories (piston pin, piston rings and circlips).
Complete piston weight in g
Weight tolerance within set
of pistons
Engine Type
930/25
Standard
650 to 654
--
654 to 658
-
Permissible tolerance = ± 4g
658 to 662
+
662 to 666
++
For replacements:
650 to 658
-- or -
Permissible tolerance = ± 8g
658 to 666
+ or ++