gearbox/transmission noise - ZR-1 Net Registry Forums

8cam · 10-28-2013

With my screaming water pump fixed, now I can hear all the other stuff going on. FYI my car sat for 15 years which is never good for rotating surfaces, so I'm prepared for whatever might be happening. I hope.

I have two distinct noises going on. The first one sounds like a bearing noise. Symptoms are a rotating/rattling sound with the clutch engaged (pedal out), trans in neutral. When I disengage the clutch the noise goes away, which tells me it's on the transmission side. Hoping this isn't something too ugly.

The second noise is gear whine, and it's pretty damn loud. Happens in at least the first three gears, noisiest in 1st and 2nd. It might happen in 4th too, but it's a lot quieter then and I'm going fast enough that road noise takes over. This noise goes on when idling along with no throttle, under acceleration and off throttle, up and down with the speed of the car. Definitely gear whine. I'm going to bet the oil hasn't been changed in a LONG time, so it's on the list. I see some posts about Castrol TWS. I also know the Ferrari guys swear by Red Line shockproof oils, which have similar characteristics to motor oils with some interesting additives. Only limitations are they can't be used in pump/filter situations. What's the latest recommendation?

10-28-2013	#1
8cam Join Date: Jul 2013 Location: Atlanta Posts: 450	gearbox/transmission noise With my screaming water pump fixed, now I can hear all the other stuff going on. FYI my car sat for 15 years which is never good for rotating surfaces, so I'm prepared for whatever might be happening. I hope. I have two distinct noises going on. The first one sounds like a bearing noise. Symptoms are a rotating/rattling sound with the clutch engaged (pedal out), trans in neutral. When I disengage the clutch the noise goes away, which tells me it's on the transmission side. Hoping this isn't something too ugly. The second noise is gear whine, and it's pretty damn loud. Happens in at least the first three gears, noisiest in 1st and 2nd. It might happen in 4th too, but it's a lot quieter then and I'm going fast enough that road noise takes over. This noise goes on when idling along with no throttle, under acceleration and off throttle, up and down with the speed of the car. Definitely gear whine. I'm going to bet the oil hasn't been changed in a LONG time, so it's on the list. I see some posts about Castrol TWS. I also know the Ferrari guys swear by Red Line shockproof oils, which have similar characteristics to motor oils with some interesting additives. Only limitations are they can't be used in pump/filter situations. What's the latest recommendation?