Engine Performance - Intake Manifold Leaks
87porsche02Subject: Engine Performance
Intake Manifold Leaks
Model
928 S4
Group
2
Part Identifier
2447
Number
8701
July 31, 1987
ATTENTION: This Bulletin replaces Bulletin Group 2, Number 8701, dated March 30, 1987.
The intake manifold gasket now has metal inserts (arrows in picture 1) and a stiffer sealing surface. The spacer sleeve (arrow in picture 2) is 25.8 mm long.
When repairing intake leaks on cars prior to the above engine numbers, new type gaskets and correct length spacers should be installed. The gaskets must be installed dry and without grease.
Manifold locking nut torque: 15 N-m (11 ft. lbs.)
From Production Date: March 5, 1987
M28/41 81H00961
(5 speed)
M28/42 81H07318
(automatic)
Part Numbers:
Gasket: 928 110 580 02
Spacer Sleeve: 928 110 698 01 (25.8 mm long)