Vortec 1600 - Page 31

Industrial 1.6L Engine Mechanical 1-9
Cylinder Head (Continued)
Specification
Cylinder Head – 1.6L Engine
Metric
English
Cylinder head height
1)
95.9 – 96.1 mm 3.776 – 3.783 in
Intake valve seat width in cylinder head 1.3 – 1.5 mm 0.051 – 0.059 in
Exhaust valve seat width in cylinder head 1.6 – 1.8 mm 0.063 – 0.071 in
Valve seat angle in cylinder head 90º 90º
Standard size inside valve guide diameter 7.030 – 7.050 mm 0.277 – 0.278 in
Oversize (0.075) inside valve guide diameter 7.105 – 7.125 mm 0.280 – 0.281 in
Oversize (0.150) inside valve guide diameter 7.180 – 7.200 mm 0.283 – 0.283 in
Length of intake valve guide 45.5 mm 1.79 in
Length of exhaust valve guide 45.5 mm 1.79 in
Installation height of valve guide 80.85 – 81.25 mm 3.18 – 3.20 in
Installation height of valves 13.75 – 14.35 mm 0.541 – 0.565 in
Valve length, standard size intake valve (GM) 101.65 – 101.95 mm 4.001 – 4.014 in
Valve length, standard size exhaust valve (GM) 101.15 – 101.85 mm 3.982 – 4.010 in
Valve length, over size (0.075) intake valve (GM K1) 101.25 – 101.55 mm 3.986 – 3.998 in
Valve length, over size (0.075) exhaust valve (GM K1) 100.75 – 101.45 mm 3.967 – 3.994 in
Valve length, over size (0.150) intake valve (GM K2) 101.25 – 101.55 mm 3.986 – 3.998 in
Valve length, over size (0.150) exhaust valve (GM K2) 100.75 – 101.45 mm 3.967 – 3.994 in
Standard size intake valve length (GM) 6.998 – 7.012 mm 0.275 – 0.276 in
Standard size exhaust valve length (GM) 6.978 – 6.992 mm 0.275 – 0.275 in
Over size (0.075) intake valve stem length (GM K1) 7.073 – 7.087 mm 0.278 – 0.279 in
Over size (0.075) exhaust valve stem length (GM K1) 7.053 – 7.067 mm 0.278 – 0.278 in
Over size (0.150) intake valve stem length (GM K2) 7.148 – 7.162 mm 0.281 – 0.282 in
Over size (0.150) exhaust valve stem length (GM K2) 7.128 – 7.142 mm 0.281 – 0.281 in
Intake valve stem play 0.018 – 0.052 mm .0007 - .0020 in
Exhaust valve stem play 0.038 – 0.072 mm .0015 - .0028 in
Perm. runout of the valve stem 0.03 mm .0012 in
Ø Valve head, intake valve 38.0 mm 1.5 in
Ø Valve head, exhaust valve 31.0 mm 1.22 in
Valve seat angle at valve head 92º 92º
Camshaft lift, intake valve 9.08 mm .357 in
Camshaft lift, exhaust valve 9.99 mm .393 in