 Today
we will perform a 3 angle cut on the valve seats
using the Neway valve cutting tool set. I have performed
hundreds of valve jobs over the years with this simple
set of Neway cutting tools. This kit will do any
BMW air head as well as many other motorcycles. I
have also used this tool on my 1947 Studebaker and
my 1937 Cadillac.
The Neway kit consists of various cutting heads, different
sized pilot rods, and a T handle. |
 Here
you can see the cutting head had adjustable carbide
teeth seat at the desired angle, these teeth are
still cutting good after years of use. |
 The
pilot rod has a very slight taper so it is held
firm in the guide. |
 After
new valve guides are installed the valve seat is
cut to 30 degrees,45 degrees, and 75 degrees. It
is important that the valve head contact the seat
precisely to insure a good seal and a long lasting
cooling running motor. When the tool is set up
to cut, it only takes a few twists of the wrist
to renew the sealing surface. |
 The
intake seat now has a new three angle cut. Up
to now we have only cut the 45 degree angle on
the exhaust seat.
|
 This
the the vale after the sealing face has been
cut at 45 degrees. Your local auto parts store
can do this for just a couple bucks.
|
 We
us a special 2 stage 8 mm reamers to size the valve
guide. Be sure to use a reamer that is designed
to cut the soft bronze valve guides. |
 Our
R60 motor is now assembled.
|
Next week in episode 5:
Next episode we rebuild the
wheels.
Click here to
turn to Virtual Restoration. |
