Saturn

The Saturn family of engines are 4 cylinder in line engines from 1.3 to 1.8 Litres in capacity. They are designated with 4G3x numbering.

The Saturn family of engines are quite basic. They all have 2 valves per cylinder with a single overhead camshaft driven by either a belt or chain. The cylinder heads are alluminium and of a crossflow design. Engine blocks are cast iron.

4G30

The 4G30 is a 1.3 Litre engine, displacing 1289cc. It has a 73.0x77.0mm bore and stroke. The camshaft on the 4G30 was driven by a chain. In Australia the engine was used in the GA Galant from 1969 to 1973.

4G31

The 4G31 is a 1.5 Litre engine and displaces 1499cc. It has a 74.5x86.0mm bore and stroke. As with the 4G30 the engine only came in a chain driven version. In Australia the engine was used in the GA Galant from 1969 to 1974.

4G32

The 4G32 is a 1.6 Litre engine with a displacement od 1597cc. It has a 76.9x86.00mm bore and stroke and was made with chain and belt driven camshafts.

In Australia, the chain driven versions were used in the following vehicles from 1971-1978:

• Galant GB - GD
• L300
• Sigma GE

The belt driven versions were used in the following between 1977 and 1985:

• Colt RB-RE
• Cordia AA
• Lancer LB
• Sigma GH - GK
• Nimbus

Outside Australia, a notable vehicle that used this engine was the fourth generation Galant

4G33

The 4G33 is a 1.4 Litre engine with a displacement of 1439cc. It uses a 73.0x86.0mm bore and stroke. As with the 4G32 it was built in both chain and belt driven versions.

The chain driven version was used in the following between 1973 and 1982:

• Galant GB, GC
• Lancer LA

The belt driven version was used in the following between 1982 and 1985:

• Colt RB-RE
• Lancer LB

4G37

The 4G37 was the largest Saturn engine at 1.8 Litres. It displaces 1755cc and has a 80.6x80.0mm bore and stroke. The 4G37 was only ever built with a belt driven camshaft.

In Australia, this engine was fitted to the follwoing from 1980 to 1989:

• Cordia AB, AC
• Nimbus UA, UB

Outside Australia, a notable vehicle that used this engine was the fourth generation Galant

MITSUBISHI PETROL ENGINES
3 cylinder
3A9x	3A90 3A91 3A92
4 cylinder
Neptune	4G41 4G42
Orion	4G11 4G12 4G13 4G15 4G17 4G18 4G19 G4ED
Sirius	4G61 4G62 4G63 4G64 4G67 4G69
Astron	4G51 4G52 4G53 4G54
Astron II	Original Revised
Saturn	4G30 4G31 4G32 4G33 4G37
4G9x	4G91 4G92 4G93 4G94
4A9x	4A90 4A91 4A92
4B1x	4B10 4B11 4B11T 4B12
Inline 6
Saturn 6	6G34
V6
6G7x	6G71 6G72 SOHC 12v 6G72 SOHC 24v 6G72 DOHC Early 6G74 Late 6G74 Ralliart 6G74 6G75
6A1x	6A10 6A11 6A12 6A13
6B3x	6B31
V8
8A80	8A80