911 Turbo AWD F6-3600cc 3.6L SOHC Twin Turbo (1997)
Piston: Application and ID
Diameter Specifications
Cylinder-to-piston clearance 0.02 - 0.03
Piston Identification
The following marks are stamped on the upper piston crown section (installation position):
Letter "E" in the middle (towards inlet), with change level ID (internal Mahle ID) to the right; the tolerance group (0, 1, 2, 3) is indicated to the left of
the "E", and the weight class is indicated next to the tolerance group.
NOTE: The signs - - (minus minus) to indicate the weight group may also appear in vertical direction.
Weight Specifications
The weight of the pistons has been changed for technical reasons. The new pistons are lighter. If it is necessary to replace individual pistons and
cylinders during repair work, first check which pistons are installed.
The marks on the piston can be inspected by using a steel brush to remove deposits. Otherwise, the pistons must be weighed!
Distinguishing Features:
Old ,heavy" piston
Stamp on piston crown: 11/0
New,light" piston