|Welcome to Downs Engineering
|We are now in our 35th year as a California company
and 55 years in the
racing industry. We have expanded our Hayabusa
product line in order to better serve our customers. We
are a full service shop and are available to do research
and development projects, from engine and oil
systems to complete car builds. We have developed
race winning products and systems for the Hayabusa
engine for the past 18 years.
|making you go fast is what we do best!
|Hayabusa Specialty Parts
|Our Wet Sump and Dry Sump Oil
Systems are the best Hayabusa
Systems on the market today
|Parts and supplies for all types of Motorsports.
Sand Rails, Kit Cars, Race Cars, Motorcycles, Track Cars,
|Having problems with your Busa? Low oil
pressure? Oil starvation in corners?
Connecting rod failures? Click here for
solutions to these and other problems
inherent in the Hayabusa engine.
We will rebuild your Hayabusa engine using new
OEM Main and Rod bearings. The rebuild also
includes New Piston Rings, New Oil Pump, and Cam
Chain, as well as a complete competition valve job.
We thoroughly inspect the gearbox and shift forks,
along with the condition of the clutch discs and clutch
basket. We run-in the completed engine on our
engine dyno. After run-in we make power runs on our
in-house dynamometer to insure proper running.
If you would like to upgrade your pre 2008 engine to
current power and torque levels we can install the
2mm stroked 2008-2011 1340cc crankshaft and
replacement exhaust cam.
Get ready now for the 2018 season. Racing starts