The dual-mass flywheel clutch in my 2010 Nissan Dualis is slowly failing. It's been suggested to convert to a single-mass flywheel, but one mechanic I spoke to said they cause vibrations that are felt by anyone in the car. Is this so? Is it worth just spending more on the original dual-mass replacement than go the cheaper single-mass option just to money save?
The dual-mass flywheel was introduced to reduce the vibrations in the driveline, so in that sense the mechanic was right, but unless you’re very sensitive you’re unlikely to be bothered by any vibrations that might result from changing to a single-mass flywheel. The advantage of switching to a single-mass flywheel is that the clutch is likely to last longer and be cheaper to replace when it does wear out.