Posted by scotc on September 16, 2012 at 11:53:38 from (75.235.77.131):
In Reply to: slant 6 diesel? posted by mmidlam on September 15, 2012 at 20:32:26:
They had even more head gasket troubles than the /6 and 4-banger gassers already had. If they had the multi-layer-steel gaskets of today they might have worked.
The slant 6 was designed to be an open-deck cast aluminum unit with steel sleeves. The plan was to cast some in iron while they worked out the process to get the molten aluminum to flow in the molds. When they couldn't get it to flow properly (in the 60s) in the molds, they took the remainder, smoothed them out between the strengthening ribs, and cast them all with iron.
They also had diesel 2.2L and 2.5L 4-cylinder test mules in the early 80s as well, but again, head gasket technology wasn't up to snuff to keep the gas versions sealed, let alone the higher compression of the diesels.
The MLS gaskets that came about in the late 90s solved the problem of Chrysler's 4-cylinder head gasket problems. The aluminum head on the cast block expanded at different rates, causing them to "walk" on the gasket, tearing it up. In the MLS gaskets, the steel layers expand at different rates and "walk" on each other, minimizing the amount of "walk" each layer has on the next.
Chrysler also figured they were about 5 years away from a feasible turbine car, when congress decided the money would be better spent having NASA do the development work. We see where that got us, don't we?
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