I'm replacing the motor in my 2005 Cooper S with another rear wrecked one from the same year (my son blew up the pressure plate , which exited the trans, found its way into the cold air intake of the supercharger, then some of it got into the intake. Not Good!!
In any case, the replaceement motor has a new single mass flywheel and clutch.
Question: Should I keep the aftermarket single mass flywheel or should I put the stock duel mass on the replacement engine???? We aren't racing this and dont want to compromise drivability.