"warpage and cracking have both occurred"
Usually happens with age Ilengine :laughing::laughing: :wink:
"couldn't open the link do you have the part numbers for the new cover and gaskets? I really don't want to use the rtv sealant"
from the PDF link
Two different valve cover/O-Ring design combinations
have been used on Command Twin Cylinder engines.
Due to differences in the O-Ring groove, it is critical to
match the correct O-Ring to the valve cover being
serviced, in order to seal properly and prevent leakage.
Prior to July of 2004, the valve covers were secured
with shoulder screws, or a combination of loose
spacers and M6 hex. head screws. See Figure 1.
These covers use a Black O-Ring, Part No.
24 153 23-S. In order to eliminate the loose spacers
and screw variations, the newer valve covers have
integral compression limiting spacers and are all
secured with M6 hex. head screws. The O-Ring groove
in these new covers is slightly deeper and narrower. A
new Brown (Part No. 24 153 29-S), or Yellow (Teflon®
coated, Part No. 24 153 28-S) O-Ring, has been used
in production with these covers. See Figure 2. Although
functionally interchangeable, to ensure best fit and
performance the Yellow (Part No. 24 153 28-S) O-Ring
is preferred and should be used when servicing. As
standardization, all future service/parts requirements
from the factory for the Brown (24 153 29-S) O-Ring will
be filled with the Yellow (24 153 28-S) O-Ring.
Although the O-Rings are similar in overall shape they
are not interchangeable. Installation of the wrong
O-Ring will result in leakage and not be warranted.