{"model":"mk3","model_name":"MK3 Supra","vehicle":"Toyota Supra A70 (1986.5–1992, 7M-GE / 7M-GTE)","document":"Repair Manual","section":"A","section_name":"Service Specifications","page":3,"pages_in_section":36,"title":"Engine Mechanical Specifications","section_header":"Service Specifications – Engine Mechanical","ocr_text":"ENGINE MECHANICAL\nSpecifications\n\nIdle speed\n7M-GE 700 rpm\n7M-GTE 650 rpm\n\nIntake manifold vacuum\n400 mmHg (15.75 in.Hg, 53.3 kPa) or more\n\nCompression pressure at 250 rpm STD\n7M-GE 11.0 kg/cm² 156 psi 1,079 kPa\n7M-GTE 10.0 kg/cm² 142 psi 981 kPa\nLimit 9.0 kg/cm² 128 psi 883 kPa\n\nDifferential of pressure between each cylinder\n1.0 kg/cm² (14 psi, 98 kPa) or less\n\nCylinder head\nWarpage\nCylinder block side Limit 0.10 mm 0.0039 in.\nIntake manifold side Limit 0.10 mm 0.0039 in.\nExhaust manifold side Limit 0.10 mm 0.0039 in.\n\nValve guide bore\nSTD 11.000 – 11.027 mm 0.4331 – 0.4341 in.\nO.S 0.05 11.050 – 11.077 mm 0.4350 – 0.4361 in.\n\nValve seat\nRefacing angle 30°, 45°, 60°\nContacting angle 45°\nContacting width 1.0 – 1.4 mm 0.039 – 0.055 in.\n\nValve guide bushing\nInside diameter 6.010 – 6.030 mm 0.2366 – 0.2374 in.\nOutside diameter STD 11.033 – 11.044 mm 0.4344 – 0.4348 in.\nO.S 0.05 11.083 – 11.094 mm 0.4363 – 0.4368 in.\n\nReplacing temperature (Cylinder head side) 90°C 194°F\n\nValve\nValve overall length STD 98.15 mm 3.8642 in.\nLimit 97.75 mm 3.8484 in.\nValve face angle 44.5°\nStem diameter Intake 5.970 – 5.985 mm 0.2350 – 0.2356 in.\nExhaust 5.965 – 5.980 mm 0.2348 – 0.2354 in.\nStem oil clearance STD Intake 0.025 – 0.060 mm 0.0010 – 0.0024 in.\nExhaust 0.030 – 0.065 mm 0.0012 – 0.0026 in.\nLimit Intake 0.08 mm 0.0031 in.\nExhaust 0.10 mm 0.0039 in.\nValve margin thickness STD 1.3 mm 0.051 in.\nLimit 0.5 mm 0.020 in.\n\nValve spring\nFree length 41.64 mm 1.6394 in.\nInstalled length 35.0 mm 1.378 in.\nInstalled load at 35 mm (1.378 in.) STD 18.0 kg 35 lb 157 N\nSquareness Limit 1.5 mm 0.059 in.\n\nValve lifter\nLifter diameter STD 27.975 – 27.985 mm 1.1014 – 1.1018 in.\nOil clearance Limit 0.015 – 0.048 mm 0.0006 – 0.0018 in.\nLimit 0.10 mm 0.0039 in.","image":"https://tsrm.sasquatchvc.com/images/mk3/A/A_003.png","url":"https://tsrm.sasquatchvc.com/mk3/tsrm/A/3","prev":{"page":2,"url":"https://tsrm.sasquatchvc.com/mk3/tsrm/A/2","api":"https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/2"},"next":{"page":4,"url":"https://tsrm.sasquatchvc.com/mk3/tsrm/A/4","api":"https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/4"},"section_url":"https://tsrm.sasquatchvc.com/mk3/tsrm/A","section_api_pages":["https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/1","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/2","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/3","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/4","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/5","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/6","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/7","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/8","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/9","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/10","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/11","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/12","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/13","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/14","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/15","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/16","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/17","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/18","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/19","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/20","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/21","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/22","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/23","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/24","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/25","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/26","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/27","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/28","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/29","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/30","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/31","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/32","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/33","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/34","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/35","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/A/36"],"note":"OCR transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}