Replacement Procedure Of Valve Seat

WARNING: This page is about a different variant/trim than selected.

Scrape the valve seat to be replaced from inside to make its wall thickness thin before pulling out.

Fig 1: Identifying Valve Seat Wall Thickness
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Repair the valve seat hole of the cylinder head to match it with the diameter of the oversize valve seat to be press fitted.
Intake valve seat bore diameter:

0.3 Over size: 36.22 - 36.24 mm (1.426 - 1.427 inch)

Exhaust valve seat bore diameter:

0.3 Over size: 30.22 - 30.24 mm (1.190 - 1.191 inch)
Press fit the valve seat, taking care not to score the cylinder head bore at room temperature.
Ream the valve seat.
Refer to "REPAIR PROCEDURE OF VALVE SEAT ."

Fig 2: Identifying Valve Seat Height
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.