Originally Posted by chamelieon

technically there is nothing to break in.. rings seat and bearings adjust within the first 15min of the cars life, driving 50 miles with some stop and go, downshifting will put load on the motor where the ring process completes. on its first warm up and cool down process everything is done! the single most important thing that matters of engine life.. is the correct Air fuel ratio.

but... an organic clutch needs 500 miles to properly seat with the flywheel and pressure plate. otherwise glazing can occur and the clutch will have a very short life and start slipping.

but on the motors i build with puck clutches that do not need any breakin period, the motor goes in and right on the dyno for tuning. where 10+ full throttle dyno runs are done. if anything breaks it will break as soon as your beating on it.

dealers recommend the 1200 because of insurance/warranty reasons.