Flame Sprayed Aluminum
Housings
Now available, a series of Aircraft Grade A356
aluminum alloy side housings to replace many of the heavier, cast iron stock
assemblies found on all 1974 and later 12A, 13B, 20B, and 13G engines. These
housings offer both the obvious advantage of significant weight savings and
greatly increased wear resistance, even under high horsepower demands.
Furthermore, these housings can be used in conjunction with the stock cast iron
housings, as budgets and applications dictate.
As an example of the
significant weight savings: a stock, intermediate housing on a 1993 13B turbo
engine weighs 25.9 pounds, while the aluminum replacement weighs just 10.5
pounds, nearly a 60 percent weight savings. The stock rear housing on this same
engine weighs 25.8 pounds, while the aluminum replacement weighs just 13
pounds, again a savings of nearly 50 percent.
John here, is holding a complete 13B block which
weighs in at an astonishing 109lbs.
After each
aluminum housing is cast, using A356 Aircraft Alloy, it is heat treated to
“T-6” hardness and then CNC-machined prior to being flame-sprayed and
ground to a final finish. The greatly increased wear resistance is the result
of this aerospace originated flame spray (or plasma spray) process that imbeds
into the wear surfaces a proprietary carbide material whose durability greatly
exceeds that of the nitride surface found on the stock cast iron housings.
The Flame Sprayed Aluminum housings are offered in a
variety of combinations: 1) with machined water jacket O-ring grooves for the
1974-85 engine applications or without these grooves for the 1986-95 engine
applications; 2) with side ports* (based on the 1993 porting configuration) or
without side intake ports for peripheral port applications; and, 3) either top
or side starter positioning (20B application). 6-Port configured housings are
not offered.
The intermediate housings available
provide additional material for machining of fuel injector sockets should your
application require such a feature. While the rear housing has no provision for
an oil pressure regulator, you have the option of mounting a stock Mazda
regulator in the side of the oil pan (wet sump) or using the internal oil
pressure regulator typically included in most dry sump pumps.
*Note - The housings “as cast” are for
peripheral port applications. If you desire to port your housing(s), contact us
for details on porting configurations available. These housing are fabricated
to your exact specifications. Contact us for ordering information at (562)
426-7960. Exact pricing can be provided once the engine specifications are
reviewed by Mazdatrix.
Prices on
these housings are subject to change. |
