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{{ImportedFrom|site=Xenonzcar|title=Z31 Crank Pulley Differences|url=https:// | {{ImportedFrom|site=Xenonzcar|title=Z31 Crank Pulley Differences|url=https://z31library.com/xenonzcar_archive/z31/Crankpulleydifferences.php.html|archive=https://z31library.com/xenonzcar_archive/z31/Crankpulleydifferences.php.html|fetched=2026-05-15}} | ||
== Z31 Crank Pulley Differences == | == Z31 Crank Pulley Differences == | ||
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The 84-86 non turbo models have all V belts. | The 84-86 non turbo models have all V belts. | ||
https:// | https://z31library.com/xenonzcar_archive/z31/images/Crankpulley/85na.gif | ||
=== 84-86 Turbo Crank Pulley === | === 84-86 Turbo Crank Pulley === | ||
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The 84-86 turbo models have 2 V belts and 1 ribbed micro V belt. | The 84-86 turbo models have 2 V belts and 1 ribbed micro V belt. | ||
https:// | https://z31library.com/xenonzcar_archive/z31/images/Crankpulley/84-86turboside.gif | ||
=== pre 4/87 Crank pulley === | === pre 4/87 Crank pulley === | ||
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The crankshaft front tip was lengthened by 18.7 mm (0.736) in. See illustration (*1). The crankshaft pulley width was increased by 13.6 mm (0.535 in.) as shown (*2). The pulley bolt was changed from M12 to M14, and the washer inner and outer diameters were increased. (See illustration.) | The crankshaft front tip was lengthened by 18.7 mm (0.736) in. See illustration (*1). The crankshaft pulley width was increased by 13.6 mm (0.535 in.) as shown (*2). The pulley bolt was changed from M12 to M14, and the washer inner and outer diameters were increased. (See illustration.) | ||
https:// | https://z31library.com/xenonzcar_archive/z31/images/Crankpulley/Wserieschanges4.png | ||
=== Sources Used === | === Sources Used === | ||
Latest revision as of 22:50, 20 October 2026
Imported page. This page was converted from an archived copy of "Z31 Crank Pulley Differences" (Xenonzcar, fetched 2026-05-15). The conversion was mechanical, so tables, links and formatting may contain conversion artefacts. Compare against the archived copy if something looks wrong. The content belongs to its original authors.
Z31 Crank Pulley Differences[edit]
The Z31 came with four different Crank pulleys. Non turbo from 84 to 86 had all V-belts. The turbo models used a ribbed belt for the alternator and v belts for the other accessories. Early 1987 models switched to to all ribbed micro v belts. The later models 4/87-89 used a longer snout on the crank shaft, therefore using a new pulley that is a 13.6 mm thicker.
84-87 Non turbo Crank Pulley[edit]
The 84-86 non turbo models have all V belts.
84-86 Turbo Crank Pulley[edit]
The 84-86 turbo models have 2 V belts and 1 ribbed micro V belt.
pre 4/87 Crank pulley[edit]
The pre 4/87 crank pulley uses all ribbed micro V belts like the W-series but does not have the same offset.
post 4/87-89 W series Crank pulley[edit]
The crankshaft front tip was lengthened by 18.7 mm (0.736) in. See illustration (*1). The crankshaft pulley width was increased by 13.6 mm (0.535 in.) as shown (*2). The pulley bolt was changed from M12 to M14, and the washer inner and outer diameters were increased. (See illustration.)
