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This is the updated Team Line .21 B7 Pro Competition Off-Road Engine
from Werks Racing. The New B7 Pro features an all new crankcase design
along with a long stroke piston/sleeve and turbo combustion chamber. The Pro-C line of engines now come standard with a Ceramic rear engine bearing, for improved performance!
The crankshaft is of a new design as well, in addition to new timing,
the inlet has been lightened and ramped with an epoxy filler. The face
of the crank of course is fluted and has been balanced with a tungsten
insert. We haven't stopped there, the new 2-stage carburetor has a
smaller 9mm slide that improves air velocity just below the venturi
insert.
The engine uses a slightly revised lightened, low CG
head design like that which was found on the existing B7. For the rest
the B7-Pro only shares the carb pinch bolt, collett, exhaust gasket and
head screws with the existing engine....it's all new baby! More torque,
more mid range, more top end, not more fuel consumption! The motor
screams and ironically it uses less fuel than the old engine. Based on
testing this will be one of the fastest motors on the market! So if you
really want to see what "Speed" is like, get your hands on the new
Werks Racing Team Line B7 Pro!
All components are hand matched at the factory for the tightest possible tolerances guaranteeing the best possible performance.
New Stiffer Case Design
It
still maintains the look of the old case but with an additional
stiffening rib that wraps from the base of the carb to the exhaust
port. This is to control expansion of the case around the sleeve which
allows us to maintain tighter tolerances between the case/sleeve fit.
This is critical to always ensuring that under expansion (from heat)
your sleeve always maintains a perfectly cylindrical shape. Case also
receives a black coating. New for the 08 Spec. ceramic rear bearing.
New Piston/Sleeve
The piston is completely new and lightened plus it is now a domed piston design for increased compression.
While
the sleeve maintains the B7's namesake 7 port configuration it is
completely new. Revised timing and a new smaller bore (long stroke
design!). Tear dropped transfer ports & chamfered lower sleeve for
improved fuel flow.
New Carburetor Design
It's now a 2 needle
with a fixed mid-range. Stillcomposite with replaceable reducers (8mm
stock). Idle screw is mounted on the top so no exhaust in the eyes. New
taper to the needles. Reduced diameter of the slide results in improved
derivability and quicker response to throttle inputs.
New Long Stroke Crankshaft
Crank has also
got almost everything done to it that you can possibly do including....
drilled (lightened), epoxy stuffed induction ramp and tungsten
balancing weights! (Basically it similar to that of a Speed engine) |
