TSRM/MK3 Supra/Repair Manual
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A/Service Specifications — Ignition System, page 14

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Ignition System — MK3 Supra Service Specifications, page 14
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Page text (OCR transcript)
A-14
SERVICE SPECIFICATIONS — Ignition System, Starting System

IGNITION SYSTEM

Ignition timing | T/M in N range | 10° BTDC @ Idle
[Check connector terminals TE1 and E1, connect]

Spark plug | Type | 7M GE | ND | PQ16R
 | | | NGK | BCPR5EP11
 | | 7M-GTE | ND | PQ20R-P8
 | | | NGK | BCPR6EP-N8
 | Gap | 7M GE | STD | 1.1 mm | 0.043 in.
 | | | Limit | 1.3 mm | 0.051 in.
 | | 7M-GTE | STD | 0.8 mm | 0.031 in.
 | | | Limit | 1.0 mm | 0.039 in.

High-tension cord | Resistance | Limit | 25 kΩ per cord

Ignition coil | Primary coil resistance | 7M-GE | 0.24 — 0.30 Ω
 | | 7M-GTE | 0.3 — 0.5 Ω
 | Secondary coil resistance (7M-GE only) | 9.2 — 12.4 kΩ

Distributor (7M-GE) or cam position sensor (7M-GTE) | Air gap
 | G1, G2 and NE pickups | 7M-GE | 0.2 mm (0.008 in.) or more
 | | 7M-GTE | 0.2 — 0.4 mm | 0.008 — 0.016 in.
 | Pickup coil resistance
 | G1 and G2 pickups | | 140 — 180 Ω
 | NE pickup | 7M-GE | 180 — 220 Ω
 | | 7M-GTE | 140 — 180 Ω

STARTING SYSTEM

Starter | Rated voltage and output power | | 12 V 1.4 kW
 | No-load characteristic | Current | 90A or less at 11.5 V
 | | rpm | 3,500 rpm or more
 | Brush length | STD | 15.5 mm | 0.610 in.
 | | Limit | 10.0 mm | 0.394 in.
 | Commutator | Outer diameter | STD | 30 mm | 1.18 in.
 | | | Limit | 29 mm | 1.14 in.
 | | Undercut depth | STD | 0.6 mm | 0.024 in.
 | | | Limit | 0.2 mm | 0.008 in.
 | | Circle runout | Limit | 0.05 mm | 0.0020 in.
 | Spring installed load | STD | 1.79 — 2.41 kg
 | | | (3.9 — 5.3 lb, 18 — 24 N)
 | | Limit | 1.2 kg | 2.6 lb | 12 N