Whining sound from gearbox 1,2, 3 and 5th

[InkWells2]

Hi I just bought my first GQ patrol and so I am new to the forum. ....there is an annoying whining noise in 1, 2, 3 and 5th gear when under accelaration. 4th gear is incredibly quiet. I noted this was mentioned up above in an earlier post. Does anyone have any technical ideas on how to minimise or eliminate the noise. The gearbox was a second hand one put in just 20,000 km ago and the previous owner of 12 years who maintained the car very well said that the noise was there when the box went in and it hasn't got any worse? Why would 4th be quiet and the others noisy? and how can in minimise it? It is the FS5R30A gearbox from a 97 2.8 L turbo.

Regards Ian

Dales 300exc posted this 4 me ......
My gearbox is the same and has been for 100,000 km. 4th is quiet because it is direct 1:1 ratio and doesn't put load through the countershaft like every other gear does

[Clunk]

Sorry mate can't help but it might be wise to pop up an introduction, you may get more responses. Noticed you asked this question yesterday too.