LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2005 >> IS 300 Base, Automatic >> Repair and Diagnosis >> General Information >> OEM General Information >> Service Specifications >> Engine Mechanical >> Service Data
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Service Data

Service Data - Engine Mechanical

Compression pressure   at 250 rpm STD 1,324 kPa (13.5 kgf/cm2 , 192 psi) or more
  Minimum 1,079 kPa (11.0 kgf/cm2 , 156 psi)
  Difference of pressure between each cylinder 98 kPa (1.0 kgf/cm2 , 14 psi) or less
Valve clearance   at cold Intake 0.15 - 0.25 mm (0.006 - 0.010 in.)
  Exhaust 0.25 - 0.35 mm (0.010 - 0.014 in.)
Adjusting shim (for repair part) Mark 2.500 2.500 mm (0.0984 in.)
2.550 2.550 mm (0.1004 in.)
2.600 2.600 mm (0.1024 in.)
2.650 2.650 mm (0.1043 in.)
2.700 2.700 mm (0.1063 in.)
2.750 2.7G0 mm (0.1083 in.)
2.800 2.800 mm (0.1102 in.)
2.850 2.850 mm (0.1122 in.)
2.900 2.900 mm (0.1142 in.)
2.950 2.950 mm (0.1161 in.)
3.000 3.000 mm (0.1181 in.)
3.050 3.050 mm (0.1201 in.)
3.100 3.100 mm (0.1220 in.)
3.150 3.150 mm (0.1240 in.)
3.200 3.200 mm (0.1260 in.)
3.250 3.250 mm (0.1280 in.)
3.300 3.300 mm (0.1299 in.)
Ignition timing   w/ Terminals TE and E1 connected of DLC1 10° ± 2° BTDC @ idle
Idle speed - 700 ± 50 rpm
Timing belt tensioner Protrusion (from housing side) 8.0 - 8.8 mm (0.315 - 0.346 in.)
Cylinder head Warpage  
Cylinder block side Maximum 0.10 mm (0.0039 in.)
Intake manifold side Maximum 0.10 mm (0.0039 in.)
Exhaust manifold side Maximum 0.10 mm (0.0039 in.)
Valve guide bore diameter STD 10.985 - 11.006 mm (0.4325 - 0.4333 in.)
  O/S 0.05 11.035 - 11.056 mm (0.4344 - 0.4353 in.)
Valve seat  
Refacing angle 15°, 45°, 75°
Contacting angle 45°
Contacting width Intake 1.0 - 1.4 mm (0.039 - 0.055 in.)
  Exhaust 1.2 - 1.6 mm (0.047 - 0.063 in.)
Cylinder head bolt diameter STD 10.8 - 11.0 mm (0.425 - 0.433 in.)
  Minimum 10.7 mm (0.421 in.)
Valve guide bushing Inside diameter 6.010 - 6.030 mm (0.2366 - 0.2374 in.)
Outside diameter (for repair part) STD 11.033 - 11.044 mm (0.4344 - 0.4348 in.)
  O/S 0.05 11.083 - 11.094 mm (0.4363 - 0.4368 in.)
Valve Valve overall length STD Intake 98.29 - 98.79 mm (3.8697 - 3.8894 in.)
  Exhaust 98.84 - 99.34 mm (3.8913 - 3.9110 in.)
  Minimum Intake 98.19 mm (3.8657 in.)
  Exhaust 98.74 mm (3.8874 in.)
Valve face angle 44.5°
Stem diameter Intake 5.970 - 5.985 mm (0.2350 - 0.2356 in.)
  Exhaust 5.965 - 5.980 mm (0.2348 - 0.2354 in.)
Valve (cont'd) Stem oil clearance STD Intake 0.025 - 0.060 mm (0.0010 - 0.0024 in.)
Exhaust 0.030 - 0.065 mm (0.0012 - 0.0026 in.)
Maximum Intake 0.08 mm (0.0031 in.)
Exhaust 0.10 mm (0.0039 in.)
Margin thickness STD 0.8 - 1.2 mm (0.031 - 0.047 in.)
Minimum 0.5 mm (0.020 in.)
Valve spring Deviation Maximum 2.0 mm (0.079 in.)
Free length Pink painted mark 43.71 mm (1.7209 in.)
  Yellow painted mark 44.10 mm (1.7362 in.)
Installed tension at 34.5 mm (1.358 in.) 186.2 - 205.8 N (19.0 - 21.0 kgf, 41.9 - 46.3 lbf)
Valve lifter Lifter diameter 30.966 - 30.976 mm (1.2191 - 1.2195 in.)
Lifter bore diameter 31.000 - 31.016 mm (1.2205 - 1.2211 in.)
Oil clearance STD 0.024 - 0.050 mm (0.0009 - 0.0020 in.)
  Maximum 0.07 mm (0.0028 in.)
Camshaft Thrust clearance STD 0.080 - 0.190 mm (0.0031 - 0.0075 in.)
  Maximum 0.30 mm (0.0118 in.)
Cam lobe height STD Intake 44.310 - 44.360 mm (1.7445 - 1.7465 in.)
Exhaust 44.250 - 44.350 mm (1.7421 - 1.7461 in.)
Maximum Intake 44.16 mm (1.7386 in.)
Exhaust 44.10 mm (1.7362 in.)
Journal diameter 28.949 - 28.965 mm (1.1397 - 1.1404 in.)
Journal oil clearance STD 0.035 - 0.072 mm (0.0014 - 0.0028 in.)
Maximum 0.10 mm (0.0039 in.)
Circle runout Maximum 0.08 mm (0.0031 in.)
Air intake chamber Warpage Maximum 0.15 mm (0.0059 in.)
Manifold Warpage Maximum Intake 0.15 mm (0.0059 in.)
Exhaust 0.50 mm (0.0196 in.)
Cylinder block Cylinder head surface warpage Maximum 0.07 mm (0.0028 in.)
Cylinder bore diameter STD 86.000 - 86.013 mm (3.3858 - 3.3863 in.)
  Maximum 86.02 mm (3.3866 in.)
Main bearing bolt diameter STD 9.96 - 9.97 mm (0.3921 - 0.3925 in.)
  Minimum 9.7 mm (0.382 in.)
Connecting rod Thrust clearance STD 0.250 - 0.402 mm (0.0098 - 0.0158 in.)
Maximum 0.50 mm (0.0197 in.)
Connecting bolt diameter STD 8.1 - 8.3 mm (0.319 - 0.327 in.)
Minimum 8.0 mm (0.315 in.)
Connecting rod oil clearance STD STD 0.023 - 0.041 mm (0.0009 - 0.0016 in.)
U/S 0.25 0.028 - 0.066 mm (0.0011 - 0.0026 in.)
Maximum STD 0.07 mm (0.0027 in.)
U/S 0.25 0.08 mm (0.0031 in.)
Connecting rod bearing center wall thickness (Reference)  
  STD Mark 1 1.498 - 1.501 mm (0.0590 - 0.0591 in.)
2 1.501 - 1.504 mm (0.0591 - 0.0592 in.)
3 1.504 - 1.507 mm (0.0592 - 0.0593 in.)
4 1.507 - 1.510 mm (0.0593 - 0.0594 in.)
5 1.510 - 1.513 mm (0.0594 - 0.0596 in.)
Bushing inside diameter 22.005 - 22.014 mm (0.8663 - 0.8667 in.)
Piston pin diameter 21.997 - 22.006 mm (0.8660 - 0.8664 in.)
Piston pin oil clearance STD 0.005 - 0.011 mm (0.0002 - 0.0004 in.)
  Maximum 0.05 mm (0.0020 in.)
Rod out-of alignment Maximum per 100 mm (3.94 in.) 0.05 mm (0.0020 in.)
Rod twist Maximum per 100 mm (3.94 in.) 0.15 mm (0.0059 in.)
Piston and Piston ring Piston diameter 85.935 - 85.945 mm (3.3833 - 3.3837 in.)
Piston oil clearance STD 0.055 - 0.078 mm (0.0022 - 0.0031 in.)
Maximum 0.10 mm (0.0039 in.)
Piston ring groove clearance No. 1 0.011 - 0.070 mm (0.0004 - 0.0028 in.)
No. 2 0.030 - 0.070 mm (0.0012 - 0.0028 in.)
Piston ring end gap STD No. 1 0.300 - 0.470 mm (0.0118 - 0.0185 in.)
No. 2 0.350 - 0.520 mm (0.0138 - 0.0205 in.)
Oil 0.130 - 0.450 mm (0.0051 - 0.0177 in.)
Maximum No. 1 1.07 mm (0.0421 in.)
No. 2 1.12 mm (0.0441 in.)
Oil 1.05 mm (0.0413 in.)
Crankshaft Thrust clearance STD 0.020 - 0.220 mm (0.0008 - 0.0087 in.)
Maximum 0.30 mm (0.0118 in.)
Thrust washer thickness STD 1.940 - 1.990 mm (0.0764 - 0.0783 in.)
Main journal oil clearance STD STD 0.026 - 0.040 mm (0.0010 - 0.0016 in.)
U/S 0.25 0.025 - 0.061 mm (0.0010 - 0.0024 in.)
Maximum STD 0.06 mm (0.0024 in.)
U/S 0.25 0.08 mm (0.0031 in.)
Main journal diameter STD 61.984 - 62.000 mm (2.4403 - 2.4409 in.)
U/S 0.25 61.745 - 61.755 mm (2.4309 - 2.4313 in.)
Main bearing center wall thickness (Reference) Mark 1 1.994 - 1.997 mm (0.0785 - 0.0786 in.)
2 1.997 - 2.000 mm (0.0786 - 0.0787 in.)
3 2.000 - 2.003 mm (0.0787 - 0.0789 in.)
4 2.003 - 2.006 mm (0.0789 - 0.0790 in.)
5 2.006 - 2.009 mm (0.0790 - 0.0791 in.)
Crank pin diameter STD 51.982 - 52.000 mm (2.0465 - 2.0472 in.)
U/S 0.25 51.745 - 51.755 mm (2.0372 - 2.0376 in.)
Circle runout Maximum 0.06 mm (0.0024 in.)
Main journal taper and out-of-round Maximum 0.02 mm (0.0008 in.)
Crank pin taper and out-of-round Maximum 0.02 mm (0.0008 in.)
scientia non olet · About LEMON Manuals