{"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":5,"pages_in_section":36,"title":"Specifications (Cont'd)","section_header":"Service Specifications — Engine Mechanical","ocr_text":"Specifications (Cont'd)\n\nPiston and\npiston ring\n\nPiston diameter\n7M GE\nSTD\nMark 0\n82.900 – 82.910 mm\n3.2638 – 3.2642 in.\nMark 1\n82.911 – 82.920 mm\n3.2642 – 3.2646 in.\nMark 2\n82.921 – 82.930 mm\n3.2646 – 3.2650 in.\nMark 3\n82.931 – 82.940 mm\n3.2650 – 3.2653 in.\nMark 4\n82.941 – 82.950 mm\n3.2654 – 3.2657 in.\nO/S 0.50\n83.40 – 83.45 mm\n3.2835 – 3.2854 in.\n7M GTE\nMark 0\n82.910 – 82.920 mm\n3.2642 – 3.2646 in.\nMark 1\n82.921 – 82.930 mm\n3.2646 – 3.2650 in.\nMark 2\n82.931 – 82.940 mm\n3.2650 – 3.2653 in.\nMark 3\n82.941 – 82.950 mm\n3.2654 – 3.2657 in.\nMark 4\n82.951 – 82.960 mm\n3.2658 – 3.2661 in.\nO/S 0.50\n83.41 – 83.46 mm\n3.2839 – 3.2858 in.\n\nPiston oil clearance\n7M GE\nSTD\n0.08 – 0.10 mm\n0.0031 – 0.0039 in.\nLimit\n0.13 mm\n0.0051 in.\n7M GTE\nSTD\n0.07 – 0.09 mm\n0.0028 – 0.0035 in.\nLimit\n0.13 mm\n0.0051 in.\n\nPiston ring end gap\nNo. 1\n7M-GE\nSTD\n0.23 – 0.38 mm\n0.0091 – 0.0150 in.\nLimit\n0.68 mm\n0.0268 in.\n7M-GTE\nSTD\n0.29 – 0.44 mm\n0.0114 – 0.0173 in.\nLimit\n0.74 mm\n0.0291 in.\nNo. 2\nSTD\n0.25 – 0.53 mm\n0.0098 – 0.0209 in.\nLimit\n1.13 mm\n0.0445 in.\nOil\n7M-GE\nSTD\n0.10 – 0.40 mm\n0.0039 – 0.0157 in.\nLimit\n1.00 mm\n0.0394 in.\n7M-GTE\nSTD\n0.10 – 0.44 mm\n0.0039 – 0.0173 in.\nLimit\n1.04 mm\n0.0409 in.\n\nRing groove clearance\nNo. 1\nLimit\n0.03 – 0.07 mm\n0.0012 – 0.0028 in.\nNo. 2\nLimit\n0.02 – 0.06 mm\n0.0008 – 0.0024 in.\n\nPiston pin installing temperature\n60°C\n140°F\n\nConnecting rod\nand bearing\n\nThrust clearance\nSTD\n0.160 – 0.296 mm\n0.0063 – 0.0117 in.\nLimit\n0.3 mm\n0.012 in.\n\nBig end inner diameter\nSTD\nMark 1\n55.015 – 55.025 mm\n2.1659 – 2.16633 in.\nMark 2\n55.026 – 55.035 mm\n2.1664 – 2.1667 in.\nMark 3\n55.036 – 55.045 mm\n2.1668 – 2.1671 in.\nU/S 0.25\n55.015 – 55.045 mm\n2.1659 – 2.1671 in.\n\nConnecting rod bearing center wall thickness\nSTD\nMark 1\n1.490 – 1.495 mm\n0.0587 – 0.0589 in.\nMark 2\n1.496 – 1.500 mm\n0.0589 – 0.0591 in.\nMark 3\n1.501 – 1.505 mm\n0.0591 – 0.0593 in.\nMark 4\n1.506 – 1.510 mm\n0.0593 – 0.0594 in.\nMark 5\n1.511 – 1.515 mm\n0.0595 – 0.0596 in.\nU/S 0.25\n1.622 – 1.632 mm\n0.0639 – 0.0643 in.\n\nBearing oil clearance\nSTD\n0.021 – 0.053 mm\n0.0008 – 0.0021 in.\nLimit\n0.07 mm\n0.0028 in.\n\nPin oil clearance\nSTD\n0.005 – 0.011 mm\n0.0002 – 0.0004 in.\nLimit\n0.02 mm\n0.0008 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transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}