Timing chain Whine.

[e30s4evr]

The timing chain was done on my car -new tensioner, rails, chain and sprockets. The car is super quiet except for a whine the gets louder with rpm. It's very noticeable past 2500 rpm. Is this normal with a new chain?

[christophbmw]

it not normal. check your oil pressure, what kind of whine is it? does it sound like the chain might be coming in contact with something?

[gearheadE30]

is it loud enough to be heard inside the car with the windows up? windows down? My car has a metallic RPM-dependant whine after doing the same rebuild and switching to synthetic oil. I have great oil flow and pressure, and the car runs far better than before. I can only hear the whine if I am decelerating above 5k RPM with the windows down. I have heard many other twincam 4-cyls (especially old porsches) that make the sound. i really need a volume to say anything for sure, though.

[e30s4evr]

The whine is most obvious under 3000rpm. Above that there's other noises that compete with it. Between 1500rpm and 300rpm the whine is the dominant noise and can be heard with the windows up or down, as long as the inside fan is in the 1st or 2nd setting. The 3rd setting drowns out the noise.

Also I have a new vibration between 2600rpm and 2900rpm in idle that is pretty agricultural. The whole car vibrated and the steering wheel vibrated. No vibrations above 3000rpm and below 2600rpm, the vibrations are actually slightly better than they used to be -at about 80% of their old levels. This new vibration seems about 3 times as bad as the old vibration at about 2000rpm. BTW, my mechanic even mounted the pulleys back in the same orientation as before. Plus I can't see anything other than the flywheel or the crank having enough mass to cause this kind of vibration at 2600-2900rpm.

[e30s4evr]

My car runs far better than before too. According to the guy who did the work, the intake timing was fine and the exhaust was off 2-3 degree -I think retarded, but not sure...