w126/w140 4.2 motors - Mercedes-Benz Forum
 
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#1 (permalink) Old 01-31-2007, 06:36 AM
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w126/w140 4.2 motors

What is the difference with the 4.2 ltr motor in the W140 that gives it so much more power than the w126 165kw/214kw.
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#2 (permalink) Old 01-31-2007, 07:01 AM
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The W140 engine is a M119 while the W126 engine is an M116, hence the difference in output.

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#3 (permalink) Old 01-31-2007, 07:13 AM
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Quote:
Originally Posted by Louie_D
What is the difference with the 4.2 ltr motor in the W140 that gives it so much more power than the w126 165kw/214kw.
Different engines, the M119 is more modern and efficient. The M117 is an engine from the 70's.
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#4 (permalink) Old 01-31-2007, 01:13 PM
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Originally Posted by Snibble
Different engines, the M119 is more modern and efficient. The M117 is an engine from the 70's.

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#5 (permalink) Old 01-31-2007, 03:30 PM
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OK until jonthan or talbir post with more info on this one, the 4.2 M119 has higher compression close to 11:1, the M119 is a DOHC with better fuel management, intake design, VVTi, better ignition etc.
The differences that count are the DOHC, VVti and the most important - higher comp ratio.

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