whinny gearbox

[slideways]

Hi Chaps
can any one help? on a long run the gearbox starts to whine when i take my foot off the loud peddal,
its not there all the time and its not really loud just annoying.

Thanks
Rich

[2Munkys]

Ya checked yer oil level?

[slideways]

did an oil change recently
it was doing it before that as well
Rich

[That Daddy]

Is it def gearbox not differential ? does it vary with gear selected?

Edited by That Daddy on Thursday 7th August 16:28

[slideways]

if i dip the clutch the noise stops and noticably when crusing in 4th and 5th but its probably in all the gears but only when in gear and not under load
Rich

Edited by slideways on Thursday 7th August 16:40

[thegman]

i strongly suspect its your diff whining. to some degree they all do that. lubrication wouldn't hurt

[chr1sb]

Agree with the above. Mine does it on the over-run in 5th at around 60 - 70mph. OK at other speeds.

Chris

[That Daddy]

Thats why i mentioned the diff,i have yet to drive a TVR well one with the GKN unit thats silent,some more so than others,also dipping the clutch is no indicator its the gearbox because your removing load from the diff also,and seeing as most noise from the GKN unit is from the pinion bearings(fastest wearing part of the axle) area you will need load on these items for the noise to be present as already mentioned check the diff oil level(often overlooked because its a bugger to get to the filler) i dont think the GKN diff was set up correctly from the factory anyway,thats why most are noisy even with next to no mileage,all IMHO

Edited by That Daddy on Friday 8th August 09:54

[900T-R]

Echo the above - mine does the same. Not bothered.

[That Daddy]

900T-R said:

Echo the above - mine does the same. Not bothered.

Mine bothered me at 1st,but after 15k as got no worse,i am not convinced its anything to worry about,but one day will get it built up properly as i see know good reason why it should not be a lot quieter the crownwheel to pinion mesh is not correct causing said noise,but as said already i dont think they were assembled properly to start with.

[900T-R]

That Daddy said:

the crownwheel to pinion mesh is not correct causing said noise,but as said already i dont think they were assembled properly to start with.

My Saab gearbox is the same - it was a rebuilt exchange unit from a UK outfit that according to the name is run by siblings . In fairness it hasn't yet grenaded despite having to deal with almost twice the torque and power it was designed for - so when cruising in the speed range where it's audible I just turn up the stereo...

[That Daddy]

900T-R said:

That Daddy said:

the crownwheel to pinion mesh is not correct causing said noise,but as said already i dont think they were assembled properly to start with.

My Saab gearbox is the same - it was a rebuilt exchange unit from a UK outfit that according to the name is run by siblings . In fairness it hasn't yet grenaded despite having to deal with almost twice the torque and power it was designed for - so when cruising in the speed range where it's audible I just turn up the stereo...

Is this why most of the Chim bregade go for the Cherry bomb conversion(well 2 bits of pipe)then,that way they cant hear for sh*t no wonder i can hear mine

[900T-R]

It's more noticeable in the TVR as it's actually the more refined cruiser of the two...

[slideways]

Thanks guys
your probably right as ive noticed an oil leak from the diff it will need some attention i think.
Rich