OK all you 20B guys (Tracy, Robin, Bob, Barny, etc.),
How do you set the initial timing of the CAS if you have no timing
marks on the Damn pulleys or you don't know what degree from TDC a
mark represents???  Also, what exactly does TDC mean in a rotary????
 I'm assuming that the timing is set the same way as on a 13B but I
don't know for sure. HELP !!! Thanks again, Don Mitchell

Since we did not have any 20B guys chime in I will give it a stab. Let
us assume the exhaust manifold is off the engine. Look through the
exhaust port and turn the engine clockwise until the front rotor apex
seal just passes the exhaust port.  Rotate the engine plugs up. Remove
one spark plug on the front rotor. Fill the combustion chamber with
oil. Jiggle the e-shaft back and fourth rather quickly and add oil
until the oil level comes up to the top of the spark plug hole and
starts to go back down as you continue to rotate the e-shaft back and
fourth.

That is top dead center. Mark the front pulley or the flywheel. If the
seals are leaking badly this won't work.  A clear plastic tube
inserted in the spark plug hole somehow will work even better with
this trick.

Paul Lamar

OK, this is kinda late but...(seems like we keep seeing this a couple of

times a year

for either the 13b or the 20b).  It would be a good idea for all of us

to verify TDC

before assembling the last end housing and front cover.  Verify (and

record) the e-

shaft keyway as well as the position of the marks on the front pulleys.

Just an idea,
Ken Powell

 Jean Fouche wrote:

On removal of the front pulley, you will see that the excentric shaft keyway
is at zero degrees to the excentric shaft lobes which means it is an
accurate indicator for TDC.

Jean Fouche

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