Okay, so way back when, I decided to replace the prop UJs as I was getting a bit of vibration on acceleration.

For some reason that escapes me now, I did 3 of the 4 before having to refit the shafts and use the vehicle. So the vibration, whilst better, was still there. This weekend, I dived underneath again to replace the last one, the back one on the rear prop.

It was pretty goosed, with plenty of slop, so in went the new one. Greased all the others and the prop slides whilst I was there. Job done.

Vibration still there. Damn!

It only happens under two circumstances, hard acceleration and on the overrun at anything above 80kph. It’ll run up steadily to speed without a murmur, it’s only when you boot it. The rest of the time, it’s a smooth as silk.

Any bright ideas?

The three UJs I replaced earlier will only have done a couple of thousand kms, if that and no, they aren’t Britpart!

Lucky dip on this one, could be any number of things, think this is going to be a long and pain staking chase to find it.
Sounds like a get under and check all mounts to eliminate them, check for any play on diffs, wheel bearings, driving shaft uj’s, the list could be endless, sorry not much help ..

If it only does it under hard acceleration or on the overrun at speed it's doing it when the driveline is being stressed. I would have gone for UJs first but as you've done them then that is unlikely. Is it possible you've got an engine or gearbox mount that has perished and come apart (more likely in your climate than here)? That would only be apparent when there's stress on the drivetrain.

I was pointed towards bushes on another site. Could have a point, they're likely to be 23 years old!

When I had the gearbox cross member off, I never thought to look, but I was too busy fitting up my new shiny stainless front pipes, and, of course, didn't have the vibration then!

So it'll be back under this weekend for a look-see.

Thanks.