GM 20SEH Engine Specs

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GM 20SEH Engine overview

This engine is part of GM Family II engine, actually there are so many lines of engines that joint into this Family II of GM engine, and they are:

  • GM 20NE engine
  • GM 20SE engine
  • GM 20SEH engine
  • GM 20CNE engine
  • GM 20GET engine
  • GM 20XE engine
  • GM 20XEJ engine
  • GM C20XE engine
  • GM C20LET engine
  • GM C25XE engine
  • GM X20XEV engine
  • GM X25XE engine
  • GM X30XE engine

Back to the GM 20SEH Engine, it was use single over head cam with 2 valves installed each cylinder, commonly the family II engine has in-line cylinders configurations with total cylinder installed on this engine are 4 cylinders. By looking the number of engine code 20XX, it’s showed that this engine is has 2.0L cylinder displacement. The most interesting about this engine is placed at the management system, usually GM is using dual microprocessor PCM, but at this engine version is using Bosch Motronic engine management system.

GM 20SEH Engine Specs

Here they are detailed specification of GM 20SEH Engine

Specs Item Specs
Engine Type GM 20SEH Engine I-4
Engine Code 20SEH
Engine Electronic Bosch Motronic ML 4.1 engine management system.
Displacement 1998 cc (121.9 cu in)
Transmission Type Available for manual and automatic transmission
Compression Ratio 10.1:1
Bore and Stroke (in.) 3.38 x 3.38
Valve configuration (pcs) SOHC, single over head cam 2 pcs/cylinders
Fuel System MPI – Bosch Motronic M2.5
Recommended Fuel Petrol
Maximum engine speed 5700 rpm
Horsepower(SAE net@rpm) 130 hp (97 kW) @ 5400 rpm
Torque (lb. ft. @ rpm) 180 N·m (130 lb·ft) @ 2600 rpm
Intake Manifold  Material Composite
Exhaust manifold Material high silicon molybdenum, cast nodular iron
Cylinder block material Cast-iron block
Cylinder head material Aluminum head
Others feature High compression piston

More aggressive camshaft than engine code 20SE

 

GM 20SEH Engine Applications

This GM 20SEH Engine is for following applications

  • Opel Calibra
  • Opel Astra F
  • Opel Omega A-B
  • Opel Kadett E
  • Opel Ascona C
  • Opel Frontera A
  • Opel Vectra A-A2-B
  • Vauxhall Cavalier
  • Vauxhall Astra
  • Vauxhall Carlton
  • Vauxhall Frontera
  • Vauxhall Calibra

GM 20SEH Enginewww.allenginelist.com

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