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Originally Posted by kip Foss
Finally it blew a head gasket for the 3 rd. time and I scrapped it at 190K. Really a great engine.
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Uhh...it seems to me that you just contradicted yourself. A diesel should be able to go considerably further than 190K. I'll admit that I redid the head gaskets on my Ford at 220K, but this is because I was adding a turbocharger on, which the engine wasn't originally designed to handle. The gaskets were actually fine (and probably would have been okay with the turbo); I did it primarily for peace of mind. So, to be safe, I put new head gaskets on and replaced the head bolts with ARP studs.
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I have heard that the Duramax have been having trouble with the aluminum heads cracking. I don't know this for a fact but a friend spoke with the shop manager in a Corpus Christi Chevy dealership and he said that they were having problems.
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Most GM people try to claim that the aluminum heads on the D-max are a non-issue...IMHO it's just a matter of time. Just because they're fine now doesn't mean they're going to be fine in 10 years.
If aluminum heads on diesel engines are so great, why are both the Powerstroke and the Cummins using cast-iron heads?
Any chance of your friend getting documentation on that? I'll bet that the GM die-hards will try to write that off as BS unless there's some documentation...and I for one would love to have that bit ammo for my anti-GM arguements
