Misc Items; Spark Plugs; Spark Plug Gap - Toyota CHASER JZX90 Owner's Handbook Manual

MISC ITEMS

· Fuel Filter: Ryco Part# Z373
Gasket Turbine Outlet: 17279-88410 (gasket that goes between dump and back out the turbo)
·
Front Wheel Studs: NS312 (from Repco)
·
· Panel Air Filter: OEM 17801-46060 – K&N 33-2504
·
O2 sensor: 89465- 80015
· Timing Belt (OEM): 13568-49065
· Oil Pump Assembly: 15100-46030
· Crank Position Sensor: 90919-05023
·
Air Box Assembly: 17700-46290
·
Air Box - Cold Air Assembly/scoop: 17751-46080 + 17751-46081
· Ignition Coil Assembly: 90919-02216
· Alternator Assembly: 27060-46160 + 27060-46301
· Starter Motor (0.8kw): 28100-46130
· Starter Motor (1.4kw): 28100-46140
·
Heater tap (Valve Assy, Water): 87240-22370

SPARK PLUGS

Twin electrode plugs are recommended due to the Wasted Spark ignition system used on the 1JZ-GTE engine.
Platinum (or other precious metal) spark plugs do not necessarily perform any better nor last any longer than
standard copper plugs.
· Recommended: NGK BKR6EK (twin electrode copper plugs ~$8ea)
· Platinum: NGK BKR6EKPB-11 (twin electrode 'Premium Platinum, Special Design' spark plugs ~$20ea)
·
Alternatives: NGK BKR6E, NGK BKR6E-11, NGK BKR7E, or NGK BKR7E-11
Notes: The -11 designation of the above NGK brand spark plugs denotes that the plugs are
factory pre-gapped to 1.1mm. The non -11 designated plugs are exactly the same except that they are
not factory pre-gapped to 1.1mm, however, I'm jet to find a set of non factory pre-gapped plugs to be
anything other than 1.1mm!

SPARK PLUG GAP

The recommended spark plug gap for a stock 1JZ-GTE engine is 1.1mm.
As you increase boost in a BPU application, you should consider progressively reducing the gap on your spark plugs,
starting with the largest gap, until such a point that any ignition issues are negated (i.e. misfire, rough idle etc)
Also, before reducing the plug gap too much, consider changing to a colder heat range plug first while starting with
the recommended stock 1.1mm plug gap. Only reduce the spark plug gap if problems persist.
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JZX90 / JZX100 NEW OWNERS HANDBOOK
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