bimdub
09-03-2008, 07:44 PM
The original thread is closed for a reason, there is no longer a need for discussion about service on this.
The original thread is here http://forums.s2kca.com/showthread.php?t=24423
This new thread is for documentation reasons for S2000 owners in case this type of wear becomes more than a fluke.
This engine had 50,000 miles on it and had always seen Mobil 1 10-30 changed every 5000 miles.
what you are looking at is the intake camshaft lobe for the secondary valve on the number four cylinder,
I would imagine this could happen on any lobe?
I have also posted pictures of the rocker for the same lobe.
This damage was also accompanied by a sunken retainer (so I have been told)
http://i217.photobucket.com/albums/cc16/bimdub/p_00092.jpg
http://i217.photobucket.com/albums/cc16/bimdub/p_00094.jpg
http://i217.photobucket.com/albums/cc16/bimdub/Picture001-1.jpg
http://i217.photobucket.com/albums/cc16/bimdub/Picture003-1.jpg
The original thread is here http://forums.s2kca.com/showthread.php?t=24423
This new thread is for documentation reasons for S2000 owners in case this type of wear becomes more than a fluke.
This engine had 50,000 miles on it and had always seen Mobil 1 10-30 changed every 5000 miles.
what you are looking at is the intake camshaft lobe for the secondary valve on the number four cylinder,
I would imagine this could happen on any lobe?
I have also posted pictures of the rocker for the same lobe.
This damage was also accompanied by a sunken retainer (so I have been told)
http://i217.photobucket.com/albums/cc16/bimdub/p_00092.jpg
http://i217.photobucket.com/albums/cc16/bimdub/p_00094.jpg
http://i217.photobucket.com/albums/cc16/bimdub/Picture001-1.jpg
http://i217.photobucket.com/albums/cc16/bimdub/Picture003-1.jpg