Toyota 7M-GTE

Toyota 7M-GTEThe Toyota 7M-GTE is a 3.0 L (2,954 cc, 180.26 cu·in) straight-six, four-stroke cycle turbocharged gasoline engine from the Toyota M-family. The engine was manufactured by the Toyota Motor Corporation from 1986 to 1992. The Toyota 7M-GTE was top performance engine until it was replaced by the 1JZ-GTE.

The Toyota 7M-GTE engine features a cast-iron block, aluminum cylinder head with dual belt-driven overhead camshafts and four valves per cylinder (24 in total). The 7M-7M-GTE is equipped with an electronic fuel injection system and a turbocharger with 5 psi (0.34 bar). It has an 83.0 mm (3.27 in) cylinder bore and 91.0 mm (3.58 in) piston stroke. Compression ratio rating is 8.4:1.

The 7M-GTE engine produced 235 PS (173 kW; 232 HP) at 5,600 rpm of maximum horsepower and 344 N·m (35.1 kg·m, 253.5 ft·lb) at 4,000 rpm of peak torque.

The breakdown of the engine code is as follows:

  • 7 – 7 generation engine
  • M – Engine family
  • G – Performance wide-angle DOHC
  • T – Turobchagered
  • E – Multi-Point Fuel Injection

General information

Engine Specifications
Engine code7M-GTE
LayoutFour stroke, Inline-6 (Straight-6)
Fuel typeGasoline
Production1986-1992
Displacement3.0 L, 2,954 cm3 (180.26 cu in)
Fuel systemMulti-point fuel injection system
Power adderTurbocharger with 5 psi (0.34 bar)
Max. horsepower235 PS (173 kW; 232 HP) at 5,600 rpm
Max. torque344 N·m (35.1 kg·m, 253.5 ft·lb) at 4,000 rpm
Firing order1-5-3-6-2-4
Dimensions (L x H x W):
Weight210 kg (463 lbs)

Cylinder block

The Toyota 7M-GTE engine has a cast-iron cylinder block, bore is 83.0 mm (3.27 in) and the piston stroke is 91.0 mm (3.58 in). The cylinder block, a monoblock specially cast structure, employs the seven bearing support system. The crankshaft has seven journals.

The pistons are aluminum casting. Each piston is fitted with two compression rings and a single oil ring. Compression ratio rating is 8.4:1.

Cylinder block
Cylinder block alloyCast-iron
Compression ratio:8.4:1
Cylinder bore:83.0 mm (3.27 in)
Piston stroke:91.0 mm (3.58 in)
Number of piston rings (compression / oil):2 / 1
Number of main bearings:7
Cylinder inner diameter (standard):82.990-83.040 mm (3.2673-3.2693 in)
Piston skirt diameter (standard):82.910-82.960 mm (3.2642-3.2661 in)
Piston pin outer diameter:21.996-22.009 mm (0.866-0.8665 in)
Piston ring side clearance:Top0.030-0.070 mm (0.0012-0.0028 in)
Second0.020-0.060 mm (0.0008-0.0024 in)
Piston ring end gap:Top0.290-0.440 mm (0.0114-0.0173 in)
Second0.250-0.530 mm (0.0098-0.0209 in)
Oil0.100-0.440 mm (0.0039-0.0173 in)
Crankshaft main journal diameter:60.007-60.012 mm (2.3625-2.3627 in)
Crankpin diameter:51.993-52.000 mm (2.047-2.0472 in)

Main bearing cap bolts torque specs:

  • 102 Nm; 10.4 kg·m; 75 ft·lb

Connecting rods cap bolts torque specs:

  • 64 Nm 6.5 kg·m; 47 ft·lb

Flywheel / Drive plate bolt torque specs:

  • 74 Nm 7.5 kg·m; 54 ft·lb

Cylinder head

The cylinder head is made of a light, strong aluminum alloy with good cooling efficiency. Camshafts are made of specially cast steel and are driven by a timing belt.

Cylinder head alloy:Aluminum
Valve Arrangement:DOHC, belt drive
Valves:24 (4 valves per cylinder)
Intake duration:
Exhaust duration:
Valve head diameter:INTAKE32.0 mm (1.2598 in)
EXHAUST27.5 mm (1.0629 in)
Valve length:INTAKE98.15 mm (3.8642 in)
EXHAUST98.15 mm (3.8642 in)
Valve stem diameter:INTAKE5.970-5.985 mm (0.235-0.2356 in)
EXHAUST5.965-5.980 mm (0.2348-0.2354 in)
Valve spring free length:41.64 mm (1.6394 in)
Camshaft lobe height:INTAKE38.85 mm (1.5295 in)
EXHAUST38.35 mm (1.5098 in)
Camshaft journal diameter:№126.949-26.965 mm (1.061-1.0616 in)
№2-726.888-26.975 mm (1.0586-1.062 in)

Cylinder head torque specs:

  • 78 Nm; 8.0 kg·m; 58 ft·lb

Maintenance data

Valve clearance (Cold)
Intake valve (COLD)0.15-0.25 mm (0.006-0.0100 in)
Exhaust valve (COLD)0.20-0.30 mm (0.0079-0.0188 in)
Compression pressure
Standard10.0 kg/cm2 / 300 rpm
Minimun9.0 kg/cm2 / 300 rpm
Oil system
Oil consumption , L/1000 km (qt. per miles)up to 0.5 (1 qt. per 1200 miles)
Recommended engine oil 5W-30
5W-40
10W-30
Oil type APISE, SF or better
Engine oil capacity (Refill capacity) Without oil filter: 3.9-4.2 l (4.1-4.4 US qts, 3.4-3.7 Imp qts)
With oil filter: 4.2-4.4 l (4.4-4.7 US qts, 3.7-3.9 Imp qts)
Oil change interval, km (miles)10,000 (6,000)
Ignition system
Spark plug Platinum tipped type:
DENSO: PQ20R-P8; NGK: BCPR6EP-N8
Spark plug gap0.8 mm (0.0315 in)
Spark plug torque18 N·m (1.8 kg·m, 13.3 ft·lb)

Vehicle applications

ModelYears Produced
Toyota Supra (MA70)1986–1992
Toyota Soarer (MZ20/MZ21)1986–1991
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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

4 Comments

  1. Please note that this engine is prone to OEM head gasket failure due to low factory cylinder head torque specs. Current community recommendation is 72 ft/lbs. To completely fix this fault community recommendation is to resurface the block and head and fit with an aftermarket multi-layer steel (MLS) or metal head gasket as was done from the factory with the later JZ engines.

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