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Custom Marks


If timing tape is not available for your engine, cut a thin strip of paper to the segment length (as calculated below) and tape it to the damper with one end in the 0° TDC mark. The strip of paper should then be placed in the direction of rotation to show the advance timing mark lining up with the stationary TDC mark on the engine.

The calculation for the painted-on timing marks is quite straightforward:

Damper Diameter   6.75"
Advance   28°
Advance Length = 28° / 360° x 2 x PI 0.489 radians
Segment Length = 6.75" / 2 x 0.489 radians 1.649"