Main characteristics of the engine
- Engine Code - FA/GG/FJ - GF
- Working volume - 1093 cm3-1272 cm3
- Cylinder diameter (mm) — 69.5—75
- piston stroke (mm) — 72—72
- Compression ratio - 8.0-8.2
Cylinder head (mm)
- The maximum allowable warping is 0.1
- The minimum allowable height after machining is 167.3
Valves (mm)
Rod diameter:
- Inlet - 7.97
- Graduation - 7.95
- Valve seat angle - 45°
Maximum allowable valve play in the guide sleeve:
- Inlet - 1.0 mm
- Graduation - 1.3 mm
Camshaft (mm)
- Maximum allowable axial play (mm) — 0.15
Oil pump
- Oil pressure at 2000 rpm and a temperature of 80°C - 2.0 bar
Piston rings (mm)
Piston ring gaps:
- Compression rings - 0.3-0.45
- Oil scraper ring - 0.25-0.40
Gap between ring and groove:
- New ring - 0.02-0.05
- The maximum allowable is 0.15
Ring Location - Marking "TOR" to the bottom of the piston.
The locks of the rings are offset by 120°relative to each other.
Crankshaft (mm)
Diameter of main journals:
- Original size - 54.00
- The first reduced repair size - 53.75
- Second reduced repair size - 53.50
- Third reduced repair size - 53.25
Crankpin diameter:
- Original size - 42.00
- The first reduced repair size - 41.75
- Second reduced repair size - 41.50
- Third reduced repair size - 41.25
Crankshaft bearing clearances:
- On a new engine - 0.03-0.08
- Maximum allowable - 0.17
Axial play of the crankshaft:
- On a new engine - 0.07-0.18
- The maximum allowable is 0.20
Axial play of the connecting rod:
- On a new engine - 0.05-0.31
- The maximum allowable is 0.40
Tightening torques for threaded connections (kGm)
Cylinder head bolts (on a cold engine) - NEW bolts only:
By 1981:
Bolts M11 (type head "star")
- Stage 1 - 4.0
- Stage 2 - 6.0
- Step 3 - Rotate 180°
Bolts M10 (type head "star")
- Stage 1 - 4.0
- Stage 2 - 5.5
- Stage 3 - 6.5
- Step 4 - Rotate 90°
Since 1982, M11 bolts (type head "star")
- Stage 1 - 4.0
- Stage 2 - 6.0
- Stage 3 - 7.5
- Step 4 - Rotate 90°
- Valve cover bolts - 1.0
- Coolant temperature sensor - 1.1
- Camshaft sprocket bolt - 8.0
- Oil pan bolts:
- Bolt head with socket wrench - 0.8
- Hex bolt head - 2.0
- Oil pressure sensor:
- Threaded - 1.2
- Lamellar - 2.5
- Toothed belt sprocket on crankshaft - 8.0
- Coolant pump mounting bolts - 1.0
- Starter mounting bolts - 2.5
- Bolts of fastening of a cover of a gear belt — 1.0
- Bolts of caps of main bearings - 6.5
- Flywheel mounting bolts - 7.5; to screw in bolts with liquid for fixing threaded connections
- Connecting rod bearing nuts - 3.0; then tighten by turning 90°
- Bolts of fastening of the distributor of ignition — 2.0
- Reducing valve of the lubrication system - 2.5
- Bolts of fastening of an oil intake of the oil pump — 1.0
- Engine/transmission mounts:
- Bolts M10 - 4.5
- Bolts M8 - 2.5
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