Custom
Cylinder
Head
Porting
(5-axis
CNC)
We offer
the
absolute
best in
big-bore
motorcycle
cylinder
head
porting.
Unlike
other
porting
shops
that
offer
"stages"
of
porting
with
different
pricing
levels,
we do
the very
best
we can
do on
every
head. We
don't
hold
back.
The
design
of each
port
differs
only
based on
the base
cylinder
head
design
and the
size of
the
valve.
Call for
availability
on your
application.
Complete
Cylinder
Head
enhancement
Cylinder
heads
can be
built up
with
different
machining
and
component
additions.
The key
is the
combination
of
elements.
For
example,
porting
combined
with
larger
valves
can
greatly
increase
horsepower,
but the
engine
really
comes to
life
when
custom
cams are
put into
the mix.
Services
include:
1)
Full
Radius
Valve
Job
-
The
most
critical,
high
velocity
flow
around
a
valve
is
right
at
the
valve
seat.
The
full
radius
valve
job
focuses
on
this
area.
Performed
on a
Serdi
60
machine
utilizing
our
custom-designed
tooling,
ensures
that
valve
edges
are
smooth
for
the
best
flow.
The
valve
height
is
kept
at a
standard
so
we
don't
loose
compression
ratio.
Many
times
we
can
achieve
a
better
seal
than
at
the
factory.
A
full
radius
valve
job
alone
can
yield
approximately
a 3%
gain
in
horsepower.
 |
 |
| Performing a Full Radius Valve Job on the Serdi |
2)
Porting
-
Porting
is
by
far
the
biggest
single
gain
for
a
normally
aspirated
motor.
All
port
jobs
come
with
a
full
radius
Valve
job.
Up
to
30
to
50
horsepower
gains
can
be
expected
on
some
applications.
3)
Valves
and
Valve
Seats
- To
get
more
flow
into
a
cylinder
you
can
simply
make
the
hole
larger.
This
is
accomplished
by
the
installation
of
larger
valves.
We
offer
valves
in a
virtually
limitless
variety
of
sizes
and
materials.
There
are
two
types
of
stainless
steel
available
(regular
and
cryogenic)
as
well
as
titanium
-
the
ultimate
option.
In
addition
to
standard
oversizes
we
can
have
custom
valves
made.
 |
 |
We custom fabricate valve seats utilizing an aluminum bronze alloy.
This makes for a happy marriage between seat and valve where no erosion of valve seat or valve face occurs. |
4)
Springs
-
Often
overlooked,
proper
springs
are
an
important
part
of
the
valve
train.
We
custom-order
our
springs
from
the
largest
automotive
spring
manufacturer
in
the
world.
Every
spring
is
chrome
silicone
wire.
Every
spring
is
magafluxed
and
shot-peened
to
ensure
integrity.
Some
shops
fit
existing
springs
into
a
head.
We
design
springs
for
each
application.
5)
Cams
-
Custom
cams
are
an
integral
part
of
any
serious
high-performance
application.
Cams
can
compliment
porting
and
larger
valves
tremendously.
Lift
and
duration
are
important
but
ramp
speed
is
the
real
science.
We
have
many
cam
profiles
to
choose
from
for
practically
any
application.
Many
are
in
stock.
Custom
Piston
Installation
There is
no
replacement
for
displacement.
Off-the-Shelf
and
custom
pistons
are
available
in
almost
any size
and
compression
ratio.
We
exclusively
use JE
Pistons.
Custom
Crank
Installation
Popular
size
stroker
available
for
late-model
big bore
sportbikes
Full
Machine
Shop
Services
In
addition
to what
is
listed
above we
also
offer
the
follow
services.
Call for
a price
quote.
1. Offsetting guides
2. Re-lined tappet bores
3. Repair crushed chamber
4. Surfacing of head surfaces
5. And anything else!
