Stanza L4-2389cc 2.4L SOHC MFI (KA24E) (1991)
Valve Seat: Service and Repair
Cutting Valve Seats
CAUTION: Cut with both hands to create a uniform cutting surface.
1. Bore out old seat until it collapses.
CAUTION: The machine depth stop should be set so that boring cannot continue beyond the bottom face of the seat recess in cylinder head.
Reaming should be done to the concentric circles to valve guide center so that valve seat will have the correct fit.
Valve Seat Recess Diameter
2. Ream cylinder head recess for valve seat.
Intake: 36.500 - 36.516 mm (1.4370 - 1.4376 in)
Exhaust: 42.500 - 42.516 mm (1.6732 - 1.6739 in)
Heating Cylinder Head
3. Heat cylinder head to 150 to 160° C (302 to 320° F).
4. Press in new seat.
5. Cut or grind valve seat using a suitable tool.
NOTE: Use valve seat specifications to determine dimensions.
6. After cutting, lap valve seat with abrasive compound.