>. Guess I need some more opinions on that so I will know which one to accept (TDC vs half way).
Dan: A loose engine will nearly always stop 45 degrees past TDC on which ever cylinder is on the power stroke. This is where the previous cylinder's exhaust valve has started to open and the next cylinder's intake valve has closed. The next cylinder starts to compress and the previous one looses the "push" from the previous compression stroke. When the engine is in this position the prop blades should be somewhere around 10:00 and 4:00 as viewed from in front of the plane. John Cooper Skyport Services 4996 Delaware Tnpk Rensselaerville, NY 12147 518 797-3064 www.skyportservices.net _____ _
