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(2) Inspect each valve spring for squareness with a steel square and surface plate, test springs from both REFACING VALVES AND VALVE SEATS (1) The intake and exhaust valve seats and valve face have a 45 degree angle. (2) Inspect the remaining margin after the valves are refaced (Fig. 23). Exhaust valves with less than (3) When refacing valve seats, it is important that the correct size valve guide pilot be used for reseating (4) Measure the concentricity of valve seat using a valve seat dial indicator. Total runout should not ex- (5) Inspect the valve seat with Prussian blue to deter- mine where the valve contacts the seat. To do this, coat • Exhaust valve seat diameter 34.84mm (1.371 inch) Valve seats which are worn or burned can be re- worked, provided that correct angle and seat width are (6) When seat is properly positioned the width of intake seats should be 1.75 to 2.25mm (0.69 to .088 (7) Check valve tip to spring seat dimensions after grinding the valve seats or faces. Grind valve tip to get Fig. 21 Intake and Exhaust Valves Fig. 22 Valve Dimensions Fig. 23 Refacing Intake and Exhaust Valves Fig. 24 Refacing Valve Seats Ä 2.2/2.5L ENGINE 9 - 29 |