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Ok reading back through this thread I think I see what you're talking about. First of all there is nothing about valve closing in the procedure. As you approach TDC on the overlap the valve will begin to open. You want it to open 1.45mm as the crank hits TDC. What you can do is stop when the valve opens to 1.45mm and take the pin out then turn the crank to TDC and put the pin back in. Yes this will work in theory. The problem is that the cam will try to turn when you do this because the rocker will be pushing the cam backwards. So you need to do something about that. One thing you could do is just before you loosen the bolt and pull the pin you could back off the rocker adjuster so the rocker is loose and not pushing on the cam. Of course you'll have to re adjust the rocker after putting the bolt back in and rechecking everything.
Hope this helps. I think we might finally be on the same page.
-Andy
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72 Carrera RS replica, Spec 911 racer
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