I have an HDJ81 (RHD auto) which means conveniently, there is a ~36mm hole (plugged with a rubber grommet) right through the bulkhead where a clutch master cylinder would have been fitted.
I had the idea of using a 36mm gland and 21mm convoluted tubing in which to run cables from the engine bay...
I have owned a diesel 4.2 24v (1HD-FT) Landcruiser 80 series (HDJ81) for over a year now and it has always made a strange whistling sounds on moderate to full throttle irrespective of RPM.
I started noticing it more recently when on holiday as the LC was fully laden and ascending steep hills.
I...