Service Data and Specifications (S.D.S.) - Inspection and Adjustment (Cont'd) (Valve spring / H.L.A. / Valve guide)
EM-260spec tableValve spring data differs between SR20DE (single spring) and SR20DET (inner and outer springs).
Inspection and Adjustment (Cont'd)
Valve spring
Valve spring (Unit: mm (in))
Free height mm (in)
SR20DE49.36 (1.9433)
SR20DET Inner40.49 (1.5941)
SR20DET Outer47.74 (1.8795)
Pressure N (kg, lb) at height mm (in) Standard
SR20DE569.00 - 641.57 (58.02- 65.42, 127.93 - 144.25) at 30.0 (1.181)
SR20DET Inner154.95 - 174.76 (15.8 - 17.82, 34.84 - 39.29) at 20.6 (0.811)
SR20DET Outer451.51 - 504.18 (46.04 - 51.41, 101.52 - 113.36) at 27.9 (1.098)
Pressure N (kg, lb) at height mm (in) Limit
SR20DE549.2 (56.0, 123.5) at 30.0 (1.181)
SR20DET Inner147.1 (15.0, 33.1) at 20.6 (0.811)
SR20DET Outer428.6 (43.7, 96.4) at 27.9 (1.098)
Out-of-square mm (in)
SR20DELess than 2.2 (0.087)
SR20DET InnerLess than 1.8 (0.071)
SR20DET OuterLess than 2.1 (0.083)
Hydraulic lash adjuster (H.L.A.)
Hydraulic lash adjuster (H.L.A.) (Unit: mm (in))
H.L.A. outer diameter
Value16.980 - 16.993 (0.6685 - 0.6690)
H.L.A. guide inner diameter
Value17.000 - 17.020 (0.6693 - 0.6701)
Clearance between H.L.A. and H.L.A. guide
Value0.007 - 0.040 (0.0003 - 0.0016)
Valve guide
Valve guide (Unit: mm (in))
Valve guide Outer diameter - Intake
Standard10.023 - 10.034 (0.3946 - 0.3950)
Service10.223 - 10.234 (0.4025 - 0.4029)
Valve guide Outer diameter - Exhaust
Standard11.023 - 11.034 (0.4340 - 0.4344)
Service11.223 - 11.234 (0.4418 - 0.4423)
Valve guide Inner diameter (Finished size) - Intake
Standard6.000 - 6.018 (0.2362 - 0.2369)
Service
Valve guide Inner diameter (Finished size) - Exhaust
Standard7.000 - 7.018 (0.2756 - 0.2763)
Service
Cylinder head valve guide hole diameter - Intake
Standard9.975 - 9.996 (0.3927 - 0.3935)
Service10.175 - 10.196 (0.4006 - 0.4014)
Cylinder head valve guide hole diameter - Exhaust
Standard10.975 - 10.996 (0.4321 - 0.4329)
Service11.175 - 11.196 (0.4400 - 0.4408)
Interference fit of valve guide
Standard0.027 - 0.059 (0.0011 - 0.0023)
Service
Valve guide - Stem to guide clearance / deflection / projection (Unit: mm (in))
Stem to guide clearance - Intake
Standard0.020 - 0.053 (0.0008 - 0.0021)
Limit0.1 (0.004)
Stem to guide clearance - Exhaust
Standard0.040 - 0.073 (0.0016 - 0.0029)
Limit0.1 (0.004)
Valve deflection limit
Standard0.2 (0.008)
Limit
Projection length "L"
Standard14.0 - 14.2 (0.551 - 0.559)
Limit