Originally Posted by Artificial-I
Also just checked the 2006 roar rulebook:
http://www.roarracing.com/downloads/2006rulebook.pdf
9.3.4: Other than in the bearings, ceramic parts are not allowed in any engine raced in ROAR sanctioned events.
Therefore ceramic bearings are ok. Only ceramic parts , like crank/piston cant be used.
who make ceramic parts for engine

?