Forum Discussion
jus2shy
Aug 02, 2014Explorer
The thing that interests me in the 2.7 is its construction. It's a CGI block that's also in an aluminum cradle. It is a very interesting approach. It looks like a whole lot of surface area to seal against oil leakage. But I'm guessing they did this to minimize the use of CGI to just the critical areas and try to lighten the entire block. Also kind of weird to see only 2 bolt mains, versus 4 bolt mains plus cross bolts in the 3.5, so I'm wondering how it will be on the durability front. Cummins gets away with 2 bolt mains, but that's because it's an inline 6, so you have a main bearing for every piston, versus a main bearing handling the stress of 2 pistons in a "V" engine. But then it is CGI versus aluminum so maybe there's more rigidity there. Here's the image for your reference:
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