3rd Gen Engine and Drivetrain -> 2007 and up 6.7 liter Engine and Drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

6.7 longevity

Old 01-31-2007, 12:09 AM
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6.7 longevity

What is the take on the 6.7 having married cylinders? I'm not a big fan, has to cause expansion problems. Yes I know that it shares the 350,000 mile service with the 5.9, just looking for opinions.
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Old 02-01-2007, 08:24 AM
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Married Cylinders

As long as there are not the same sex, its OK!
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Old 02-01-2007, 02:53 PM
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I'm not worried about the cylinders being married, its when they get a Divorce is when I'm going to Worry
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Old 02-01-2007, 02:55 PM
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This is why you get a prenup
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Old 02-01-2007, 04:14 PM
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Ok guess I ll try and say something serious.

What is married cylinders?
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Old 02-01-2007, 04:25 PM
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I think it means there is no coolant passage between them. (at least i think thats it)
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Old 02-01-2007, 08:12 PM
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Married cylinders actually make the block a lot stronger. Big bore gasser's have run them for years. As for cooling, we will see how they do.
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