Multiple cracks on top of engine
06-12-2011, 12:22 PM
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12 E550
Multiple cracks on top of engine
OK so I just changed my air filters. Approaching the 40K mark so I figured it is time. What was really crazy is what the passenger side top part of the engine looked like. Right next to oil fill hole and behind towards the spark plugs I noticed multiple cracks to the metal. What is up with that? See pictures. I am guessing I should demand that the dealer replaces to entire top of the engine right, while still under warranty? What is that part called exactly? Cylinder head cover? The cracks seemed to be spreading towards the back as well where the spark plugs are...
06-13-2011, 08:38 PM
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R350 4-matic
OK so I just changed my air filters. Approaching the 40K mark so I figured it is time. What was really crazy is what the passenger side top part of the engine looked like. Right next to oil fill hole and behind towards the spark plugs I noticed multiple cracks to the metal. What is up with that? See pictures. I am guessing I should demand that the dealer replaces to entire top of the engine right, while still under warranty? What is that part called exactly? Cylinder head cover? The cracks seemed to be spreading towards the back as well where the spark plugs are...
06-14-2011, 11:46 PM
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2005 C32 4Matic - That's Not A Typo! :D
Those are casting deformations. Nothing to be alarmed about. If it helps you sleep better at night, show your local mechanic but he'll probably tell you the same thing and that you'll find those on just about any cast parts made.
06-15-2011, 04:37 PM
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06 R360, 06 F350 6.0, 04 CayenneS, 96 911TT 500HP, 86 928S, 74 911S, 73 914-4, 70 914-6, 02 Durrango
If you see oil then it that is a bad situation.
For the most part that is a normal situation because the metal cools at different rates when they finish casting the unit. That's why the surface looks like that, similar to how mud dries.
For the most part that is a normal situation because the metal cools at different rates when they finish casting the unit. That's why the surface looks like that, similar to how mud dries.
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06-15-2011, 04:54 PM
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2009 r class bluetec, 90 Acura Integra B16, 91 Mit. Galant VR4, 03 ES300, 89 Maxima, 98 Beetle TDI
Just a note. I see those casting deformations alot more on my German cars over the years, less on Japan built cars. Not that the deformations are not there, it just looks like they are machined off after the casting process on cars made in Japan. Just something I've noticed over the years.
