{"model":"mk2","model_name":"MK2 Supra","vehicle":"Toyota Supra A60 (1982–1986, 5M-GE)","document":"Repair Manual","section":"A","section_name":"Service Specifications","page":3,"pages_in_section":29,"title":"Engine Mechanical Specifications","section_header":"Service Specifications — Engine Mechanical","ocr_text":"Idle speed\t\t\t\t\t650 rpm\nIntake manifold vacuum\t\t\t\tMore than 430 mmHg (16.93 in. Hg, 57.3 kPa)\nCompression pressure\tat 250 rpm\tSTD\t\t11.5 kg/cm²\t\t164 psi\t\t1,128 kPa\n\t\t\t\tLimit\t\t9.0 kg/cm²\t\t128 psi\t\t883 kPa\nDifferential of pressure between each cylinder\t\t\tLess than 1.0 kg/cm² (14 psi, 98.0 kPa)\nCylinder head\tHead surface warpage\t\tLimit\t0.10 mm\t\t0.0039 in.\n\tCamshaft housing surface warpage\tLimit\t0.10 mm\t\t0.0039 in.\n\tExhaust manifold surface warpage\tLimit\t0.10 mm\t\t0.0039 in.\n\tIntake manifold surface warpage\t\tLimit\t0.10 mm\t\t0.0039 in.\n\tValve seat\tRefacing angle\t\tIntake\t30°, 45°, 60°\n\t\t\t\t\tExhaust\t30°, 45°, 67.5°\n\t\tContacting angle\t\t\t45°\n\t\tContacting width\t\t\t1.2 – 1.6 mm\t0.047 – 0.063 in.\nValve guide\tInner diameter\t\t\t\t8.01 – 8.03 mm\t0.3154 – 0.3161 in.\nbushing\tOuter diameter\t\tSTD\t\t13.040 – 13.051 mm\t0.5134 – 0.5138 in.\n\t\t\t\tO/S type 0.05\t13.090 – 13.101 mm\t0.5154 – 0.5158 in.\n\tReplacing temperature (cylinder head side)\t\t\tApprox. 90°C (194°F)\nValve\tValve overall length\t\tSTD\tIntake\t107.5 mm\t\t4.232 in.\n\t\t\t\t\tExhaust\t109.7 mm\t\t4.319 in.\n\tValve face angle\t\t\tIN & EX\t44.5°\n\tStem diameter\t\t\tIntake\t7.970 – 7.985 mm\t0.3138 – 0.3144 in.\n\t\t\t\t\tExhaust\t7.965 – 7.980 mm\t0.3136 – 0.3142 in.\n\tStem oil clearance\t\tSTD\tIntake\t0.025 – 0.060 mm\t0.0010 – 0.0024 in.\n\t\t\t\t\tExhaust\t0.030 – 0.065 mm\t0.0012 – 0.0026 in.\n\t\t\t\tLimit\tIntake\t0.08 mm\t\t0.0031 in.\n\t\t\t\t\tExhaust\t0.10 mm\t\t0.0039 in.\n\tStem end refacing\t\tLimit\tIN & EX\t0.5 mm\t\t0.020 in.\n\tValve head edge thickness\tLimit\tIntake\t0.5 mm\t\t0.020 in.\n\t\t\t\t\tExhaust\t1.0 mm\t\t0.039 in.\nValve spring\tFree length\t\t\tIntake\t49.1 mm\t\t1.933 in.\n\t\t\t\t\tExhaust\t52.5 mm\t\t2.067 in.\n\tInstalled length\t\t\tIntake\t40.0 mm\t\t1.575 in.\n\t\t\t\t\tExhaust\t43.0 mm\t\t1.693 in.\n\tInstalled load\t\t\tIntake\t34.7 – 38.3 kg\t76.5 – 84.4 lb\t340 – 376 N\n\t\t\t\t\tExhaust\t33.3 – 36.7 kg\t73.4 – 80.9 lb\t327 – 360 N\n\tSquareness\t\t\t\t2.0 mm\t\t0.079 in.\nLash adjuster\tLeak down test at 20 kg (44.1 lb)\t\t\t2 – 7 seconds/1 mm (0.04 in.)","image":"https://tsrm.sasquatchvc.com/images/mk2/A/A_003.png","url":"https://tsrm.sasquatchvc.com/mk2/tsrm/A/3","prev":{"page":2,"url":"https://tsrm.sasquatchvc.com/mk2/tsrm/A/2","api":"https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/2"},"next":{"page":4,"url":"https://tsrm.sasquatchvc.com/mk2/tsrm/A/4","api":"https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/4"},"section_url":"https://tsrm.sasquatchvc.com/mk2/tsrm/A","section_api_pages":["https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/1","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/2","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/3","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/4","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/5","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/6","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/7","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/8","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/9","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/10","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/11","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/12","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/13","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/14","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/15","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/16","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/17","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/18","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/19","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/20","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/21","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/22","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/23","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/24","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/25","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/26","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/27","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/28","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/A/29"],"note":"OCR transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}