Hi my 2008 2.7 is coming up to 110000 miles, it has been a brilliant car and ultra reliable, its had all its services lately by an independant landrover mech.
After the timing belt replacement my car developed a single clunk that happens intermittently and mostly when reversing or as it changes at the start of a hill. i was told it was probably the transfer box and i should replace it.
due to work and the thought of a 3k bill etc i haven't done anything.
It otherwise drives well and recently passed its MOT and check at a main LR dealer who did not notice anything.
it has been a few months now and it still clunks, most of the posts about transfer boxes talk about grating or whining where as this is definitely a clunk, you feel, almost like a missed low gear.
Before i am talked into a new transfer box has any one had this?
 Range Rover Sport tdv6 2.7
2008

Simple check, Change the transfer box oil and filter the old oil and look for debris. In Spain - 2018 F Pace - Frightened away from the Sports due to crank failures
Gone - A couple of RRS, A couple of Disco's. However thinking of another Sport.

Thanks,
we changed the oil in the transfer box when it was first noticed thinking it might help I don't recall a lot of debris then but its worth doing again. this is definitely a clunk rather than a grind Range Rover Sport tdv6 2.7
2008

Hi mate I have just had my transfer box rebuilt to £830 mine wasn't a clunk it sounded like a scraping noise like a wheel bearing rover 2,7 sport

Perhaps the same, having only had the car a small time and still getting used to it I have also noticed a low speed (10-perhaps 20 mph) clunk when apply light throttle but above these speeds I can't say I notice anything. Feels/sounds like it coming from the rear or certainly behind me.

When was the fluid in the Viscous Coupling last changed/ checked? You may be suffering slippage in the VC. LR claimed originally that it was "sealed for life" - after a lot of failures in Freelanders "life" was reduced to 5 or 7 years IIRC 2020 Pangea Green 1st Edition D240 New Defender 110 is here and loving it
2018 Melting Silver Mini Countryman PHEV - soon to be replaced
2015MY Corris Grey SDv6 HSE Dynamic, the best car I have ever owned, totally reliable only a cou0le of rattles in 3 years, now no longer in my care
Also in my garage is a 1996 TDi300 Defender 90 County HT made into a fake CSW

When my sport was making the noise it was really difficult to say where noise was coming from it was a rotational scraping noise I swapped both front hubs which included wheel bearings £360 later still same noise swapped rear bearing and corroded back plate just in case it was handbrake shoes catching like I said it was rotational noise £140 later still same turned out to be bearings in transfer box but no clunking sound check ur diff oil and prop