C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

W203 engine swap

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Old Feb 4, 2018 | 06:34 PM
  #1  
MercMeister's Avatar
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From: Dallas, Texas
W204 C300 4Matic Sport Sedan
W203 engine swap

I have a 05 C230 Kompressor Sport Sedan 6spd with the M271 engine. The original engine had seized up because of oil pump failure at 140K miles. I bought a used with a warranty but I am past the warranty. The engine had 90K on it and I only put 10K on it before it completely went out on me. The timing chain stretched and timing is now off. Leak down test is 90%. I’m assuming the valves are bent. The engine is toast and I will not spend $2,000+ on a flawed engine for the SECOND time. Has anyone ever swapped the M272 3.5L or the 3.0L into a W203? Are the engines compatible with the manual transmission? I know they had the V6 in the W203 and I also know very few had manual transmissions.

Thanks in advance.
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Old Feb 5, 2018 | 12:22 AM
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Russell Ormerod's Avatar
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From: Cape town
not a merc
Valves don't always bend, did you correct the valve timing before the leak test?
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