Dart_2018_Catalog_SinglePg_June_Revised

CASTING &
METALLURGY.
THE QUALITY AND DESIGN OF A CASTING
DEFINE THE POTENTIAL OF THE FINAL PART.
Castings made with mediocre materials will never be able to support
the heat and power that a casting made from premium alloys will.
Castings poured without the utmost attention to detail can suffer
crippling structural flaws that lower the bar for the performance of
the end product in ways that no amount of machining can alleviate.
Because it’s important to build on a solid foundation, Dart takes
the casting process very seriously. Every single Dart casting is
100% made in the United States from start to finish. Many of our
Aluminum castings employ aerospace quality alloy, the best in
the industry for the high temperature, high pressure demands
of performance engine operation. Our Iron castings use a selection
of premium alloys, carefully chosen to meet the needs of
each of our product lines. These Iron alloys offer excellent tensile
strengths and Brinell hardness ratings from 200 to 250 or more,
well above that of a “bargain” casting. This translates to blocks
and heads that have longer life spans and can be built to more
demanding specifications.
United States tier two foundries have extensive experience
with automotive requirements and practices, and have
served the American auto industry for many decades.
In addition to our regular premium alloys, Dart also offers our Iron components
cast from special Compacted Graphite Iron (CGI). Compacted
Graphite Iron looks just like regular Cast Iron, and weighs about the same,
however the alloy is 100% stronger. This greatly increased strength
makes CGI parts suitable for the most demanding, high stress engine applications
like turbo, supercharged or nitrous engines that will run with
extreme cylinder pressures.
Top grade alloys are just one piece of the puzzle. Dart also works closely
with our American foundries to ensure that the casting process has
been perfected to an art. Everything from the pouring process, to the
temperature the molten metal reaches before pouring, to the heat
treatment procedure can have a dramatic impact on the final quality
of the casting. Even small oversights can lead to components that
suffer from porosity, often completely invisible to the naked eye,
All of Dart’s castings are produced at foundries in the Midwest
United States, within six hours driving time of our Detroit area
headquarters and manufacturing facility.
Not intended for sale or use with pollution controlled vehicles.
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