Agreed probably half shaft components.
Not impossible its the prop though.
As its pronounced at a particular RPM, get that prop shaft looked at.
Check the end CVs.

 

I had exactly the same problem and it was a NS half shaft. Buy from a breaker. I got a diff and both half shafts (as I didn't know which one it was) for 400 including delivery from Fenland (see breakers)

 

Thanks all for your suggestions. I've got it booked in in a couple of week's time so hopefully armed with this I can get to the bottom of it... Hope its not too expensive!

 

Bree, there's a lot of 'possible' reasons and if you're not careful you'll spend a lot of money chasing every one.

The guys who service my car are very expert, but they couldn't even get the car to make the noise (until there were two people sat in on the test drive which changed the angles of the drive shafts etc) and up until then they were on a bit of a wild goose chase.

I took a flyer and bought a used rear diff and halfshafts and fitting one half shaft cured the problem. I would ask your repairer to concentrate on this, but it's probably quite hard to measure the wear on the universal joint on a halfshaft, so they may not believe you

 

It's a CV joint, not a UJ.

Pulling the gaiter back will normally reveal something interesting.
Like swarf, broken cages or balls and often lack of grease!

 

This half shaft issue - anyone got the fix? replacement parts I expect, but is it DIY? or a how to?

 

Ian, I'm sure it can be repaired, but I would say only for the experienced. If a garage is going to tackle it, labour costs won't be low.

I had a half shaft replaced with one from the breakers and (touch wood) it's been fine so far.

 

AE, driveshafts are best replaced, not re-built.

You'll need a bearing press for the rear hub, too, so it's not entirely DIY.

 

Thanks guys

 

So,
For anyone chancing upon this thread in the future, thanks to all for your advice - you were right, it was a half shaft (N/S), and after diagnosis I got a replacement almost straight away from Fenland (innocent mix-up over near vs off side, immediately resolved).
All in all, whilst I'd rather not have had the problem in the first place, I'm pretty happy to have it sorted at relatively little expense, and great service from the guys in Bristol Honda too.

The S is a joy to drive again.