Mike Perry wrote:

Dear Paul

I am trying to solve what I believe to be a timing problem with my 1987 13B with Tracy's EFI
system.  My problem is determining where TDC is.

I am not sure the front pulley with the timing marks was mounted correctly when bolted back on the
E shaft. If I remove the leading plugs and position the #2 rotor with an apex seal crossing the
plug hole, #1 rotor has one of its faces which appears to be centered on the plug hole.  Is this
TDC for rotor #1?

When I look at the "how wankle works .jpg" from the web site, the zero degree position is offset
to one end of the rotor face refercence the spark plug.  Does this position represent TDC?  Any
comments on how to determine TDC without reference to the front pulley would be helpful.

Mike Perry

Lets see.... screw driver in the spark plug hole trick?
Rock the engine back and fourth while feeling with the screw driver.
There are some other ways of doing it. Something to do with
x number of degrees after the apex seal passes the top of the 
exhaust port. Also modify an old spark plug and hook it
to a section of transparent tube. Fill the combustion chamber
with oil when it is near top dead center and half the transparent tube.
Watch the oil column in the tube as you rock the e-shaft back and fourth.

Paul Lamar
 
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