2.8L IN-LINE V6 (VR6)
Intake Valve ................................. 1.33 (33.9)
Exhaust Valve ................................ 1.34 (34.1)
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3) The difference is maximum refacing allowable for valve and
seat. If valve installed height is too low or too high, lifters will
not work correctly. Replace cylinder head assembly.
Valves
Measure valve length, stem diameter and valve margin. If not
within specification, replace valves. Lap valves by hand or replace as
necessary. See VALVES SPECIFICATIONS table under ENGINE SPECIFICATIONS
at end of article.
CYLINDER BLOCK ASSEMBLY
Piston & Rod Assembly
1) Make sure piston, rod and rod caps are marked with
matching cylinder number prior to removal. Ensure arrow on top of
piston points toward pulleys. Ensure marks on rod and cap are
positioned correctly. See Fig. 15. Rod cap bolts and nuts must be
replaced after removing or loosening.
Fig. 15: Assembling Piston & Rod
Courtesy of Volkswagen United States, Inc.