Originally Posted by
megan
Since you love to be pedantic, what you mean to say is that there is no detectable piston movement. Whenever the crank is rotating there will always be piston movement. Simple geometry.
Wtf
Omg you really dont understand basic engine construction and operation do you.
The pistion moves in an up ward stroke. When it gets to the top there is a degree ( variable with crank/rod stroke and lengh)
This is a dead zone when the crank is rotating and zero movement of the piston.
This movement between the two must be half to get the true tdc. Easy when the head is removeable harder but not inpossible when the head is attach.
Im really supprised at your superior avaition maintenance skills and knowledge you didnt know this basic fact.