SAFARI

ENGINE 26 VALVE: Description Inlet Exhaust Valve seat angle on valve 45 0 + 10' 45 0 + 10' Valve head diameter – 'A' mm 44.10/43.90 36.10/35.90 Valve seat dia on valve – 'C' mm 42.01/41.99 34.01 /33.99 Valve stem diameter – 'E' mm 8.950/8.935 9.940/9.925 Valve seat width – 'D' mm 3.5/2.8 4.2/3.5 Length of valve mm 140.7/140.3 140.7/140.3 Tappet clearance mm 0.20 0.30 Cold or moderately warm engine cooling system temp. 50 0 max. Permissible runout between valve seat and stem mm 0.03 0.03 Permissible runout between valve head and stem mm 0.2 0.2 Permissible ovality of valve seat mm 0.01 0.01 Minimum thickness of valve 'B' head mm 2.1 2.1 Hardness of valve on stem end HRC 57 + 3 57 + 3 Distance between narrow dia of valve face to contact line mm 0.5 0.5 Distance of valve head to cyl. head parting surface mm 1.2-1.7 1.2-1.7 VALVE TIMING: Fig. 7. Inlet opens Before TDC 29 0 Inlet closes After BDC 55 0 53' Exhaust opens Before BDC 53 0 58' Exhaust closes After TDC 20 0 51' Fig. 6 Fig. 7 INLET OPENS 29 0 before T.D.C EXHAUSTCLOSES 20 0 51’ after T.D.C. T.D.C. INLET OPENS 55 0 53’ after B.D.C B.D.C. EXHAUSTOPENS 53 0 58’ before B.D.C