ok guys,

put on your thinkin caps.

wed I adjusted my valves on a semi-cold motor. I ran her hard
as I always do. I drive a 99 GSR with CTR cams. Toward the
end of the day, I notice a "clacky" sound in the motor when it
revs. Later that night, I changed the oil... and tried to hear it.
I noticed a few things like less than perfect T-Belt tension so...
I let the engine sit for 13 hours. It was COLD. I set the valves and
belt tension the best ever. The engine starts, I rev to 2500rpm...
I begin to hear it. I let it warm up, the idle is perfect, no pops no
flutters, no stuttery uneven compression at idle. The car is
TORQUEY on the low cam where it usually loses power on a bent
valve. VTEC is intermittant, and the noise like a large marble in a glass
jar is resonating from the head above 2500rpm. ONLY ON ENGINE
ACCELERATION! On decel, it stops and tipping in the throttle makes
it return. GRRRRRRRRRR!!! oh also... it doesnt matter if it is warm
or cold it always makes this sound now.


cams are at 0,0
timing is at 16BTDC
idle speed is at 750

any ideas here?


[Modified by MikeSarr_GSR, 10:22 AM 7/21/2002]