3500 ENGINE
(1)
SPECIFICATIONS
Height to top of valve guides ...................... 26.00 + 2.00 mm (1.024 + .079 in.)
(4)
Diameter of valve stems (new) .........9.441 + 0.008 mm (.3717 + .0003 in.)
(2) 7N1904 Spring (outer) for valve: Length under test force ...... 56.36 mm (2.219 in.) Test force ...................254 + 25 N (56.9 + 5.6 lb.) Use again minimum load at length under test force ............................................ 229 N (51.5 lb.) Length of spring at valve open position ............................................ 40.36 mm (1.589 in.) Use again minimum load at valve open position ...................................................... 800 N (180 lb.) Bore in valve guides with guides installed in the head (new) .........9.487 + 0.025 mm (.3735 + .0010 in.)
Free length after test .......... 62.50 mm (2.461 in.) Outside diameter ................ 43.96 mm (1.731 in.)
Use again maximum bore in valve guides with guides installed in the head ............................................9.540 mm (.3755 in.)
Spring must not be bent more than ................................................ 2.18 mm (.086 in.) (3)
7N1903 Spring (inner) for valve: Length under test force ...... 45.49 mm (1.791 in.) Test force ..................... 125 ± 12 N (28 + 2.7 lb.) Use again minimum load at length under test force ........................... 113 N (25.4 lb.)
(5)
Diameter of valve heads ............56.00 + 0.15 mm (2.205 + .006 in.)
(6)
Angle of valve faces..........................291/4 + 1/4°
(7)
Depth of bore in head for valve seat inserts........14.00 + 0.15 .lm (.551 +.006 in.)
(8)
Diameter of valve seat inserts....60.119 + 0.015 mm (2.3669 + .0006 in.)
Length of spring at valve open position ...................... 29.49 mm (1.161 in.)
Bore in head for valve seat inserts....60.000 + 0.025 mm (2.3622 + .0010 in.)
Use again minimum load at valve open position ............................... 397 N (89.3 lb.)
(9)
Angle of face of valve seat inserts.................................................3014 + 1/2°
(10)
Outside diameter of the face of valve seat inserts............55.14 + 1.48 mm (2.171 + .058 in.)
Free length after test .......... 51.54 mm (2.029 in.) Outside diameter ................ 29.24 mm (1.151 in.) Spring must not be bent more than ............................... 1.83 mm (.072 in.)
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