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ME-SFI vehicle features - AH07.61-P-0002-02KE

Scope of changes for engine 271 REPO 

IMPORTANT

Engine 271 underwent model refinement in 2006. Technical modifications on the model refined engines 271 REPO (repositioning) were introduced from 06/06 in two steps.

The following engines belong to the REPO engines:

Technical modification: in model 171 as of 06/2006 as of 12/2006 in model 203 as of 06/2006 ab 12/2006 in model 209 as of 06/2006 as of 12/2006 in model 211 as of 06/2006 from 12/2006
Modified cylinder head:
  • Optimized combustion chamber cooling
  • Combustion chamber base thickness increased from 8 to 10 mm
  • Valve cooling bore increased from 6 to 7 mm
  • Adjusted water jacket with improved coolant stream
  X   X   X   X
New cylinder head gasket   X   X   X   X
New piston - compression of 8.5 (for 135 kW engine)       X X  
Stronger valve springs (for motor speeds up to 6300 rpm)   X   X   X   X
Spark plugs M12X1.5 instead of M14X1.5   X   X   X   X
New ignition coils   X   X   X   X
New Injection valves with 6-hole nozzle (previously 4-hole nozzle)   X   X   X   X
Improved cooling of intake valve "Quick Heat"   X   X   X   X
New camshaft-driven vacuum pump (without connection for vacuum supply for ADAPTIVE BRAKE (ABR)) X   X   X   X  
New cylinder crankcase (with a second knock sensor eye)   X   X   X   X
Supercharger with a higher gear ratio of i=2.5 (for 135 kW engine)       X X  
Output increase from 120 to 135 kW and torque increase from 240 Nm to 250 Nm       X X  
Engine control unit 16 bit (ME-SFI [ME] control unit) with new data base   X   X   X   X
Firewall catalytic converter with manifold and underfloor catalytic converter (for left steer) with high-quality catalytic converter coating   X   X   X   X
Firewall catalytic converter with manifold and underfloor catalytic converter (for right steer) with high-quality catalytic converter coating X   X   X   X  
Fuel grade (for left steer) lowered from 98 to 95 research octane number (RON) (from premium to normal gasoline) (in combination with the new catalytic converter coating)   X   X   X   X
Fuel grade (for right steer) lowered from 98 to 95 research octane number (RON) (from premium to normal gasoline) (in combination with the new catalytic converter coating) X   X   X   X  
New exhaust system   X   X   X   X