I'm having gearbox trouble with my Rover 620ti.
When changing up to fifth gear above 3,000rpm, there is a loud crunching noise before the gear is engaged. The gearchange is smooth in all other gears - and is perfectly fine in fifth below 3,000rpm.
One friend recommended changing the gearbox oil, just in case that was the cause, but it hasn't made any difference so it's looking like the synchromesh is damaged.
I know the gearbox is notoriously weak on these cars, so I was expecting trouble sooner or later. If anyone has had this problem, can they say roughly how many miles their gearbox lasted once this fault had developed?
When it gets worse, is it worth getting it repaired by a proper gearbox technician or will an exchange unit work out cheaper? And does the TI have its own gearbox or does it just use the standard Rover 620 one?
Cheers.