TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
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EM/Engine Mechanical14 / 139
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Adjusting Shim Selection Chart (Intake) — MK4 Supra Engine Mechanical, page 14
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EG–14 ENGINE – ENGINE MECHANICAL Adjusting Shim Selection Chart (Intake) Installed shim thickness mm (in.) Measured clearance mm (in.) 0.000 – 0.020 (0.0000 – 0.0008) 0.021 – 0.040 (0.0008 – 0.0016) 0.041 – 0.060 (0.0016 – 0.0024) 0.061 – 0.080 (0.0024 – 0.0031) 0.081 – 0.100 (0.0031 – 0.0039) 0.101 – 0.120 (0.0039 – 0.0047) 0.121 – 0.140 (0.0047 – 0.0055) 0.141 – 0.160 (0.0055 – 0.0063) 0.161 – 0.180 (0.0063 – 0.0071) 0.181 – 0.200 (0.0071 – 0.0079) 0.201 – 0.220 (0.0079 – 0.0087) 0.221 – 0.240 (0.0087 – 0.0094) 0.241 – 0.260 (0.0094 – 0.0102) 0.261 – 0.280 (0.0102 – 0.0110) 0.281 – 0.300 (0.0110 – 0.0118) 0.301 – 0.320 (0.0118 – 0.0126) 0.321 – 0.340 (0.0126 – 0.0134) 0.341 – 0.360 (0.0134 – 0.0142) 0.361 – 0.380 (0.0142 – 0.0150) 0.381 – 0.400 (0.0150 – 0.0157) 0.401 – 0.420 (0.0157 – 0.0165) 0.421 – 0.440 (0.0165 – 0.0173) 0.441 – 0.460 (0.0173 – 0.0181) 0.461 – 0.480 (0.0181 – 0.0189) 0.481 – 0.500 (0.0189 – 0.0197) 0.501 – 0.520 (0.0197 – 0.0205) 0.521 – 0.540 (0.0205 – 0.0213) 0.541 – 0.560 (0.0213 – 0.0220) 0.561 – 0.580 (0.0220 – 0.0228) 0.581 – 0.600 (0.0228 – 0.0236) 0.601 – 0.620 (0.0236 – 0.0244) 0.621 – 0.640 (0.0244 – 0.0252) 0.641 – 0.660 (0.0252 – 0.0260) 0.661 – 0.680 (0.0260 – 0.0268) 0.681 – 0.700 (0.0268 – 0.0276) 0.701 – 0.720 (0.0276 – 0.0283) 0.721 – 0.740 (0.0283 – 0.0291) 0.741 – 0.760 (0.0291 – 0.0299) 0.761 – 0.780 (0.0299 – 0.0307) 0.781 – 0.800 (0.0307 – 0.0315) 0.801 – 0.820 (0.0315 – 0.0323) 0.821 – 0.840 (0.0323 – 0.0331) 0.841 – 0.860 (0.0331 – 0.0339) 0.861 – 0.880 (0.0339 – 0.0346) 0.881 – 0.900 (0.0346 – 0.0354) 0.901 – 0.920 (0.0354 – 0.0362) 0.921 – 0.940 (0.0362 – 0.0370) 0.941 – 0.960 (0.0370 – 0.0378) 0.961 – 0.980 (0.0378 – 0.0386) 0.981 – 1.000 (0.0386 – 0.0394) 1.001 – 1.020 (0.0394 – 0.0402) 1.021 – 1.040 (0.0402 – 0.0409) 1.041 – 1.060 (0.0409 – 0.0413) New shim thickness Shim No. | Thickness 1 | 2.500 (0.0984) 2 | 2.550 (0.1004) 3 | 2.600 (0.1024) 4 | 2.650 (0.1043) 5 | 2.700 (0.1063) 6 | 2.750 (0.1083) 7 | 2.800 (0.1102) 8 | 2.850 (0.1122) 9 | 2.900 (0.1142) 10 | 2.950 (0.1161) 11 | 3.000 (0.1181) 12 | 3.050 (0.1201) 13 | 3.100 (0.1220) 14 | 3.150 (0.1240) 15 | 3.200 (0.1260) 16 | 3.250 (0.1280) 17 | 3.300 (0.1299) HINT: New shims have the thickness in millimeters imprinted on the face. Intake valve clearance (Cold): 0.15 – 0.25 mm (0.006 – 0.010 in.) EXAMPLE: The 2.800 mm (0.1102 in.) shim is installed, and the measured clearance is 0.450 mm (0.0177 in.). Replace the 2.800 mm (0.1102 in.) shim with a new No.12 shim.