Quote Originally Posted by Helirich View Post
Ok, that seems to be an unlikely source for this sound. It sounds like a slow beat. Maybe every second or two. It got slower when I shifted from fourth to fifth.
Since it is RPM related, you might try switching the engine off and and see what you hear while it is coasting.

Also, you've made at least two OT political comments in this thread so far -- Three strikes (anywhere) and you are out. Same if you start an argument/discussion about it. Just stop now.