HOME Table 3-19. Cylinder Heads 0.0039 IN 1.0250 1.2190 1.2220 0.2378 0.00315 0.0669 0.0787 0.0031 2009 VRSC Service: Engine 3-7 ITEM MM Cylinder head flat- ness 0.100 Cylinder head cam bore diameter 26.035 Tappet bucket o.d. diameter 30.962 Cylinder head bucket bore dia- meter 31.040 Valve guide i.d. dia- meter 6.040 Valve stem deflec- tion 0.08 Valve seat width - intake 1.700 Valve seat width - exhaust 2.00 Valve seat-to-guide runout 0.080