If you are breaking crankshafts and oil pumps, the cause may be
a mystery to you as it has been to many of our customers. We know
that controlling the harmonic resonance of the BMW 6 is highly
important as RPMs rise, but the ideal configuration of the inline-6
motor makes even experienced engine builders overlook some
fundamental principals of engine harmonics that can be
FACT: harmonics CAN destroy these motors
despite their ideal 'inline six' balance. Popular word
says the OEM units do not fail, an in many cases failures are in
fact uncommon... However we have dozens of clients who have managed
to prove otherwise as engines are modified further-away from
standard configurations. Even some racers were bringing spare units
to each event -not any more.
Fitting their engine with an ATI damper solved their issues and
restored confidence in the powertrain.
Why do some racers have issues while others don't? Lightweight
components such as performance flywheels, or knife edged cranks
alter the resonant (natural) frequency(s) of the rotating assembly
and can therefore cause failures during high RPM use. Since nearly
no two modified engines are exactly alike, this can strike
different customers at different times.
When used with our included in house made pulley, this is a
direct bolt on solution. Available in overdrive, underdrive (for
use with standard size pulleys) or standard diameter (for use with
under driven accessories, or supercharged cars). Also,
configurations available for use with our dry sump kits. This
damper has a 7" outer diameter and it includes OEM style timing
ATI Performance Products, Inc. is located in Baltimore, MD, and
specializes in producing and maintaining high performance products
for street and strip applications. Over the years ATI has earned a
reputation for its cutting edge technology, attention to detail and
rigorous testing under race conditions. We are proud to have them
as an exclusive partner in these BMW applications.
Non-Trigger Ring Kit (OBD2) includes:
Trigger Ring option for OBD1 systems, adds a trigger wheel to
the Non-Trigger kit listed above.
VAC Tech Notes:
From Zach of Atlanta, Georgia on 9/13/2013.
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