I will be very interested in how well the new engines hold up in always heavy vans like class b's, especially when they get to the dualies and towing a toad class C's.
Aluminum block that has no cast iron cylinder liners. They use a, I think, new process that arc sprays an iron/carbon material on the aluminum cylinder bores. It is also used in passenger cars, it appears.
In other engines for heavy vehicles we tend to see more cast iron blocks as the continuous high loads can be tough on aluminum blocks. The 6.0 Chevy is a case in point with cast iron used for the heavier trucks versions. The sprayed liners will also be interesting. I didn't see any information about how thick it is, but I assume quite thin or the expansion differences would make it crack, I think, is it was thick. Probably not rebuildable unless the bores are worn.
Materials and processes are getting better, so hopefully they will hold up well as they are lighter and more efficient than the engines they are replacing.
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