Pre-Unit DONNY Triumph Billet Crank Case With Timing Cover
Part Number 70-2892/2314/A
"Donny" crankcases for pre-unit Triumphs now being distributed in North America by British Cycle Supply Company:
The world's strongest Triumph crankcases
are now readily available in North America. CNC machined from billets
of bulletproof aircraft grade "6 series" aluminum alloy, rather than cast like
others, these cases are capable of handling the horsepower from big bore
cylinders, hot cams, nitro fuel, stroker cranks,
and superchargers without wincing, or can simply be used to replace the
unobtainable original pre-unit crankcases.
This is a special order product, please call for more information.
Supplied with a timing cover set up
for RH crank seal and RH ignition as used on unit Triumphs, but maintaining the
ability to run the original rear mounted ignition, these cases allow for tons of
flexibility when engine building.
"Donny" cases have been used by designer
Donny Coveney in roadracers and dragracers achieving 90 plus horsepower, and are
capable of taking much more. Complete with hardware, and fully machined, these
cases incorporate many improvements over stock Triumph cases, and are definitely
the way to go if building a hot pre-unit Triumph.
Allen bolts are stainless, base stud
inserts are 4140 chromoly, and cases are supplied ready to accept 72mm
Superblend crank bearings for the ultimate in
reliability.
We are now able to supply cranks and rods to go with our Donny cases, on special order.
Thumbnails, click for bigger photos.
We are now able to supply cranks and rods to go with our Donny cases, on special order.
