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Size of intake valve seat ring and cylinder head eat ring bore s Class Diameter of intake valve seat ring (unit: mm) Diameter of the seat ring bore of cylinder head (mm) Interfer ence (mm) Standard 43.877
01 . 0 01 . 0 + − 43.763 025 . 0 0 + Oversized 0.5 44.377
01 . 0 01 . 0 + − 025 . 0 44.263 0 + Oversized 1.0 44.877
01 . 0 01 . 0 + − 025 . 0 44.763 0 + 0.079 — 0.124
Size of exhaust valve seat ring and cylinder head seat ring bore Class Diameter of exhaust valve seat ring (mm) Diameter of cylinder head seat ring bore (mm) Interference (mm) Standard 38.877
01 . 0 01 . 0 + − 38.263 0
025 . 0 + Oversized 0.5 39.377
01 . 0 01 . 0 + − 38.763 0
025 . 0 + Oversized 1.0 39.877
01 . 0 01 . 0 + − 39.263 0
025 . 0 + 0.079—0.124 UAES’s new two-valve 38.377
01 . 0 01 . 0 + − 38.263 0
025 . 0 + Oversized 0.5 38.877
01 . 0 01 . 0 + − 38.763 0
025 . 0 + Oversized 1.0 39.377
01 . 0 01 . 0 + − 39.263 0
025 . 0 + 0.079—0.124
Size of valve guide and valve guide bore Class Valve guide bore (unit: mm) Diameter of cylinder head guide hole (unit: mm) Interference (unit: mm) Standard 13.555
0 01 . 0 − 13.481—13.519 Oversized 14.305
0 01 . 0 − 14.231—14.269 Oversized 14.505
0 01 . 0 − 14.481—14.519 0.026—0.07
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