{"model":"mk3","model_name":"MK3 Supra","vehicle":"Toyota Supra A70 (1986.5–1992, 7M-GE / 7M-GTE)","document":"Repair Manual","section":"EM","section_name":"Engine Mechanical","page":75,"pages_in_section":98,"title":"Engine Mechanical","section_header":"Engine Mechanical — Cylinder Block","ocr_text":"ENGINE MECHANICAL — Cylinder Block\n\nEM-75\n\nHINT: There are five sizes of standard cylinder bore diameter, marked \"0\", \"1\", \"2\", \"3\" and \"4\" accordingly. The mark is stamped on the cylinder block as shown in the illustration.\n\nStandard cylinder bore diameter:\nSTD size\nMark \"0\" 82.990 - 83.000 mm\n(3.2673 - 3.2677 in.)\nMark \"1\" 83.001 - 83.010 mm\n(3.2677 - 3.2681 in.)\nMark \"2\" 83.011 - 83.020 mm\n(3.2681 - 3.2685 in.)\nMark \"3\" 83.021 - 83.030 mm\n(3.2685 - 3.2689 in.)\nMark \"4\" 83.031 - 83.040 mm\n(3.2689 - 3.2693 in.)\n\nMaximum cylinder bore diameter:\nSTD size 83.24 mm (3.2772 in.)\nO/S 0.50 83.74 mm (3.2968 in.)\n\nIf the diameter is greater than maximum, rebore all six cylinders. If necessary, replace the cylinder block.\n\n6. REMOVE CYLINDER RIDGES\n\nIf the wear is less than 0.2 mm (0.008 in.), use a ridge reamer to machine the top of the cylinder.\n\nDISASSEMBLY OF PISTON AND CONNECTING ROD ASSEMBLIES\n(See page EM-63)\n\n1. CHECK FIT BETWEEN PISTON AND PIN\n\nTry to move the piston back and forth on the piston pin.\n\nIf any movement is felt, replace the piston and pin as a set.\n\n2. REMOVE PISTON RINGS\n\n(a) Using a piston ring expander, remove the compression 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