Editing Z31/Wseriesmain php (section)

=== Interchange ===

In certain combinations, some MODIFIED engine components can be installed on NON-MODIFIED VG30 ENGINES (production prior to April, 1987) as shown in the following chart. However, NON-MODIFIED ENGINE COMPONENTS CANNOT BE INSTALLED ON MODIFIED VG30 ENGINES (production starting April, 1987).

Use the chart below to determine proper component combinations.

https://dev.z31library.com/xenonzcar_archive/z31/images/Engine/w-series/Wserieschanges7.png

https://dev.z31library.com/xenonzcar_archive/z31/images/Engine/w-series/Wserieschanges8.png

https://dev.z31library.com/xenonzcar_archive/z31/images/Engine/w-series/Wserieschanges9.png

* Refer to Parts Microfiche for complete application information.
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Modified short engine can be used in place of non-modified short engine in conjunction with the cylinder head/head gasket combinations shown as acceptable in chart on page 4/6.
Also, the crank pulley must be changed as indicated below:
* Truck, Pathfinder, 200SX, Maxima, and 300ZX (except 300ZX prior to 9/86 production), must use the modified crankshaft pulley, bolt and washer shown in the chart on page 6/6.
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'''300ZX Non-Turbo prior to 9/86 production'''requires crankshaft pulley (P/N 12303-12G01), bolt (P/N 12309-16V00) and washer (P/N 12308-77A00). -
'''300ZX Turbo prior to 9/86 production'''requires crankshaft pulley (P/N 12303 5320), spacer (P/N 12308-V5321), bolt (P/N 12309-16V00) and washer (P/N 12308-77A00).

* Modified parts can be used in place of non-modified parts in combinations shown as acceptable in chart on page 4/6.