I thought I would add my 2 pence as I have just collected my R having had a sachs sintered clutch and sachs flywheel fitted after the stock clutch gave up at just over 40k.
The very first thing I noticed is that the clutch pedal is heavier than stock. I was prepared for a heavier pedal feel, but I was not expecting it to be that heavy. It caught me off guard. It felt like something was under the pedal and was restricting its movement.
Pulling off there is some judder in 1st gear, a few more revs makes sure I didn't stall it.
After a 25 mile trip home down the motorway I pulled up the slip road up to the roundabout and was surprised that the pedal had already began to soften. Either this or my left foot must have been trying to escape the car.
After 20 minutes of town driving and back roads, working the clutch through the gears I was used to it. Its still heavy, not as heavy as my first press of the pedal, but now in a way that it inspires confidence, that it can take the power the R has, unlike the stock item.
I have been advised that I should run it in for at least 500 miles before giving it the full beans.
Hopefully in the coming weeks in continues to soften up and the judder disappears.
Apologies for the long read, hopefully somebody reads this and it helps them make an informed decision when their clutch gives up.