Re-ringing your m96 or m97 engine isn 't even an option for most rebuilds, however most engine builders re-ring engines after only doing a visual inspection of cylinder bores rather than measuring the cylinders for ovality and taper. It is a guarantee if the engine has not been sleeved, the bores are out of spec on even a fresh rebuild.

Through ln engineering 's exclusive nickies sleeving process, we have overcome the d-chunk, slipped-sleeve, scoring, as well as taper and ovality issues associated with Porsche 986/996 and later 987/997 models.