: Finally tore the motor apart  04-13-09, 12:05 AM Well I
aquired the car needing head gaskets about a year ago. Haven't
had a chance till now to get it apart and running. I pulled the
motor last week and when i went to pull the heads I noticed that
the exhaust cams were retarded a bit and the intake cams were
advanced a bit. What i am trying to determine is if this was
done on purpose or it was an accident when someone changed the
timing chains or something? I may need to have the heads decked
a few thousandths to make sure they are flat and not warped so
valve clearance and timing is a concern since i dont know a lot
about the n* yet. Is it common to change the cam timing in these
motors in that manner, and what are the ramifications tuning
wise to doing this?  04-13-09, 01:59 AM Changing cam timing is
not common. I haven't seen any mention of it as a tuning aid.
People that wound up 1 tooth off had driveability problems.
Here's some info that may help. There are plenty of others.
04-13-09, 08:57 AM Ther