Transmission Whine

turbodizzle

Member
Hopefully someone can shed some light on this noise that I am experiencing. The stumpy r380 transmission and transfer case are around a year old with low mileage on them, both from Ashcroft. I recently changed my clutch to a heavy duty one from LOF. The install went without a hitch and around 50 miles later what I think is the transmission started to make a whining noise that got progressively louder the longer I drove it. So I started troubleshooting and changed out the fluids on both the transfer box and the transmission. Took it for another test drive and the noise is still there. The noise does go away when in neutral and is present in all gears. I pulled the PTO plate off and took out the input gear and found nothing out of the ordinary. I don't know what else to check so if anyone has any ideas on what the problem may be or where to look next it would be greatly appreciated.


 

javelinadave

Administrator
Staff member
Was there any metal in the fluid that you drained?
What lube and weight are you using in the transmission and xfer case?
Did you install a new pilot bushing?
 

Angus

Well-known member
Does the noise change when you push the clutch? Just thinking it could be the TO bearing since you just replaced the clutch.
 

turbodizzle

Member
Was there any metal in the fluid that you drained?
What lube and weight are you using in the transmission and xfer case?
Did you install a new pilot bushing?
No there was no metal. I am using Redline MTL 75w80 in the transmission, and Redline 75w90 in the transfer case. Yes I did also install a new pilot bearing.
 
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Uncle Douglas

Well-known member
Sounds like throw out bearing.
Did you use the special stumpy throw out bearing or did you use one that came with a clutch kit ?
The unique stumpy bearing is a good bit shorter so that it fully disengages. If you put it back together with a normal 4 cyl throw out bearing it will work and drive for about 1000 miles and then you get to do the job again.
 

MountainD

Well-known member
Sounds like throw out bearing.
Did you use the special stumpy throw out bearing or did you use one that came with a clutch kit ?
The unique stumpy bearing is a good bit shorter so that it fully disengages. If you put it back together with a normal 4 cyl throw out bearing it will work and drive for about 1000 miles and then you get to do the job again.
From someone that is most likely going to get a stumpy, that is great to know— thanks!
 

turbodizzle

Member
Sounds like throw out bearing.
Did you use the special stumpy throw out bearing or did you use one that came with a clutch kit ?
The unique stumpy bearing is a good bit shorter so that it fully disengages. If you put it back together with a normal 4 cyl throw out bearing it will work and drive for about 1000 miles and then you get to do the job again.
I did indeed use UTJ100210G. So over the weekend I pulled the engine and went back to my good known previous clutch and unfortunately the sound remains. I did not replace the throw out bearing. I think I will order another one and change it out just to be sure.
 

SimonDewing

Well-known member
I would talk with Luke at LOF have always found him very helpful and best source of rover clutch parts by a wide margin.
If you were specific about your engine/transmission combination I would be surprised if he supplied wrong parts.
Of course any custom machining to flywheel and clutch mechanisms or non standard parts may throw him off.
 

Red90

Well-known member
I doubt it is the clutch. The sound frequency is too high. Probably a loose bearing in the transfer case.

Get a frequency measuring app and have a passenger measure the frequency versus speed.
 
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