Lynn:
Is
something missing; or do I not understand; see note below:
Remove
all of the spark plugs.
Turn
the engine in the direction of normal rotation until you can see an apex seal
in the center of the trailing plug hole of the number one rotor housing.
The rotor housing furthest from the prop. The upper plug is the
trailing plug.
Removing
the plug will reveal the hole.
Mark a
flywheel starter tooth under your temporary pointer. Use welding wire or a coat
hanger for a pointer, so you can bend it as needed. It needs to be well mounted
and snug.
Once
you have marked the tooth under the pointer with a paint drop, or chalk, or scrap
of tape, do not move the pointer any more.
turn
the engine backwards about 30 degrees, looking into the leading plug hole
for the next apex seal to come to the center of the hole. The leading plug hole
is the one on the bottom of the number one rotor housing. Once you have that
apex seal centered make a second mark on a flywheel tooth or valley between
teeth, whatever is under the pointer.
Half
way between those two marks, make a third mark. This mark will be the TDC mark,
accurate to about a degree. Clean the tooth with a fine file and paint it red.
Count the teeth on the flexplate/flywheel.
This puts the apex seal at TDC.
What we want is the combustion chamber at TDC. The center of the indent on the
rotor face is 60 degrees from the apex seal. Rotating the E-shaft 180
degrees puts the rotor face at TDC.
Let us
say that you find 106 teeth. divide 360 by 106 and get 3.39 degrees per tooth.
So, for a timing mark at 24 degrees (for example) you would count off 7 teeth
while turning the engine backwards. Mark whatever is under the pointer a
different color than red. Make it bright like white or yellow. You can move the
red dot back under the pointer. Remove the wire pointer and make up a
permanent pointer to point at the red mark. So long as the engine is not turned
during this process, all will be well. If you install more than one timing
mark stamp what each is for on the spacer plate, with the correct paint dot by
each line.
Use
only a clip on inductive timing light. clipped onto the leading plug wire of
the number one rotor housing.