[ROVERNET - UK] P6 Design & Rear Suspension Function

[Netspace]

>
> Isn't once enough? Would your design choice be an engine that necessitates 
> the removal of the cylinder head (often more than once according to 
> posters on this list) in order to adjust the valve clearances? And, of 
> course, Rover manufactured a special jig for that, too. Who wants an 
> engine where a wrench, a screwdriver, and a set of feeler gauges is all 
> you need to do the job? No fun in that. Then there's the cost of the 
> cylinder head gasket.
>
> The 4-cyl valve clearance snafu speaks volumes to what sort of priorities 
> Rover had.
>>

You don't need to remove the head nor disturb the gasket.
Vern's point is (quite correctly) that once is enough for many miles.
It is the same system as a Jag engine, and is used on many motorbikes now 
since it hardly wears.
However I agree they are hard to service for regular stuff.  They just did 
not think about it.