Two things...
Originally Posted by
kyleN20
not able to hear it at crusing speed, and at a certin point in 1st, and second, at just the right rpm, about 2k, you can hear a ticking, almost a clicking, its not trans because i can dup-a-souund in the driveway, also, when i shut my car off, i get a rattle from the engine, like a shutter, kinda like a diesel might,
any ideas, thanks
Kyle
Ticking at idle is probably the rocker arms. Properly adjusted valves at 0.013 are usually audible above the engine noise, and it's been my experience that setting them tighter can quiet them up a bit, as can getting new eccentrics. New eccentrics really just help you set them all exactly the same... when some are looser than others, they'll be louder and the sound will stand out.
I just did mine back at 0.013, and they're all a little bit loud. If you have a single one that's much louder than the rest, you probably want to adjust them. If you haven't done the valves recently, it's worth it to do them anyway just to be sure. Loud is okay if you're sure they're set properly - "Sewing machine" is the term I've heard for the sound of an M30 at 0.013.
The rattle on shutdown is the dual mass flywheel. Push the clutch in when killing the motor and you won't hear it. That, or get an e28 flywheel!
- Robin
Robin
72 Chevy K10
01 E39 M5