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These are offered for customers that want this size even though I personally do not recommend using them for applications that require long reliability. I have not found them to last or cool up to the standards that the 90.5mm provide. Yes, they make more power at first; however, the ring seal seems to deteriorate in as little as 5000 miles and requires extra breathers on the valve covers to handle the blow-by. Be clear that blow-by is a failure from cylinder distortion and lack of ring seal to the cylinder wall. GB 016 92mm Cima/Mahle forged aluminium, 69mm stroke (39.6mm pin height). Cylinder sizes of, case 96mm, head 98mm, 6mm thick crown. Approximately 8.2:1 CR. (POTL) RW: 1.5/2/4. See Notes C, D, E, G. SW 30# GB 017 92mm Cima/Mahle forged aluminium, 82mm stroke (34-mm pin height). Cylinder sizes of, case 96mm, head 98mm, 6mm thick crown. (POTL) Approximately 9.6:1 CR. RW: 1.5/2/4. See Notes C, D, E, G. SW 30# GB 018 94mm Cima/Mahle forged aluminium, 69mm stroke (39.6mm pin height). Cylinder sizes of, case 97.25mm, head 101.10mm, 6mm thick crown. Approximately 8.5:1 CR. (POTL) RW: 1.5/2/4. See Notes D, E, G. SW 30# GB 019 94mm Cima/Mahle forged aluminium, 82mm stroke (34-mm pin height). Cylinder sizes of, case 97.25mm, head 101.10mm, 6mm thick crown. (POTL) Approximately 9.9:1 CR. (POTL) RW: 1.5/2/4. See Notes D, E, G. SW 30#
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