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Item
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Engine
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YF (2.0L Zetec)
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Cylinder head and valve train
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Valve to valve guide clearance
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(mm{in})
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0.017-0.064 {0.00064-0.0025196}
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Valve clearance [Engine cold]
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(mm {in})
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IN
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0.11-0.18 {0.004331-0.007087}
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EX
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0.27-0.34 {0.0106299-0.0133858}
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Angle degrees runout (total indicated runout)
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(°)
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90
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Valve guide bore diameter (insert counterbore diameter)
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(mm {in})
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IN
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6.06 {0.23858}
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EX
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Head gasket surface flatness
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(mm{in})
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0.05/0.520/076 150 x 150
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Head face surface finish
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(mm{in})
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15 microns max
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Valve head diameter
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(mm {in})
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IN
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32.0 {1.2598}
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EX
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28.0 {1.10236}
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Valve face runout limit
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(mm {in})
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IN
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0.035 {0.0013779}
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EX
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Valve face angle
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(°)
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45
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Valve stem diameter
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(mm {in})
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IN
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6.03 {0.23740}
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EX
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Valve spring compression pressure
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N(lb),mm{in}
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IN
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365 {82.1}, 25.1{0.988}
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EX
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422 {94.94}, 26.1{1.0275}
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Valve length
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(mm {in})
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Free length
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43.2 {1.701}
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Installed height
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34.2 {1.346}
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Valve guide inner diameter
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(mm {in})
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Standard
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IN
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5.509-5.539 {0.2169-0.2180}
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EX
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5.509-5.539 {0.2169-0.2180}
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Valve springs assembled height service limit,
pressure lost @ specific height
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(mm {in})
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34.2 {1.346} ± 0.65 {0.0256}
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Valve springs assembled height service limit,
pressure lost @ specific height
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(N {lb})
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IN
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145 {32.596}
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EX
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180 {40.464}
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Camshaft
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Lobe lift
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(mm {in})
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IN
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8.9 {0.0137}
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EX
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8.7{0.0134}
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Theoretical valve maximum lift
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(mm {in})
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IN
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9.254 {0.33858}
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EX
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8.6{0.0134}
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End play service limit
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(mm {in})
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0.080-0.220 {0.00315-0.00866}
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Bearing journal diameter
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(mm {in})
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25.960-25.980 {1.0221-1.0227}
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Camshaft bearing radial clearance
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(mm {in})
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0.020-0.070 {0.000787-0.002756}
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Cylinder block
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Cylinder block diameter
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(mm {in})
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Class-1
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84.800-84.810 {3.338576-3.3389697}
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Class-2
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84.810-84.820 {3.3389697-3.3393634}
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Class-3
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84.820-84.830 {3.3393634-3.3397571}
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Piston to cylinder bore clearance
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(mm {in})
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0.05 {0.0019685}
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Surface finish (ra) each bore min
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(microns)
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2.0-6.0 max
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Out of round limit
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(mm {in})
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0.025 {0.0009842} max
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Taper limit
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(mm {in})
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+ 0.025 {0.0009842}-0.013 {0.0005118} max
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Main bearing bores inside diameter
(bearing cap installed)
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(mm {in})
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58.011-58.038 {2.28389-2.284956}
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Main bearing bores inside diameter
(bearing cap installed) bearing caps graded by size
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(mm {in})
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58.008-58.031 {2.2837749-2.284680}
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Main bearing radial clearances
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(mm {in})
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0.011-0.058 {0.000433-0.002833}
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Main bearing radial clearances
bearing caps graded by size
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(mm {in})
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0.0196-0.044 {0.0007716-0.0017322}
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Crankshaft
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Main bearing journal diameter
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(mm {in})
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57.980-58.000 {2.2826726-2.28346}
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Main bearing journal end play
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(mm {in})
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0.09-0.26 {0.0035433-0.010236}
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Connecting rod bearing journal diameter
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(mm {in})
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46.89-46.91 {1.846059-1.850036}
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Connecting rod
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Connecting rod bearing clearance to crankshaft
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(mm {in})
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0.016-0.070 {0.0006299-0.0027559}
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Connecting rod piston pin bore diameter
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(mm {in})
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20.589-20.609 {0.810589-0.811376}
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Crankshaft bearing bore diameter
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(mm {in})
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46.89-46.91 {1.846059-1.850036}
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Piston
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Piston to bore clearance
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(mm {in})
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0.010-0.030 {0.0003937-0.0011811}
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Piston diameter
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(mm {in})
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Class-1
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84.781-84.799 {3.337828-3.338537}
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Class-2
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85.276-85.294 {3.357316-3.358025}
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Piston bore diameter
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(mm {in})
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19.99-20.01 {0.7870063-0.7877937}
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Ring width
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(mm {in})
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Upper compression ring
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0.30-0.50 {0.011811-0.019685}
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Lower compression ring
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0.30-0.50 {0.011811-0.019685}
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Oil control ring
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0.40-1.04 {0.0158748-0.055118}
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Ring groove width
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(mm {in})
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Upper compression ring
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1.484 {0.058425}
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Lower compression ring
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1.734 {0.0682675}
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Oil control ring
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2.905 {1.1143698}
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Piston pin length
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(mm {in})
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63.00-63.80 {2.48031-2.51181}
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Piston pin diameter
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(mm {in})
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White-
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20.662-20.625 {0.8134629-0.8120062}
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Red-
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20.625-20.628 {0.8120062-0.8121243}
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Blue-
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20.628-20.631 {0.8121243-0.8122424}
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Piston ring-to-piston pin interference fit
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(mm {in})
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0.010-0.015 {0.0003937-0.0005905}
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Piston pin clearance in connecting rod bore
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(mm {in})
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0.016-0.049 {0.0006299-0.0019291}
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