2nd Strut
It took a while to get the parts for the 2nd strut . I did not realize that the body mount was spot welded and the strut bracket was screwed to it. CS was able to source the body mount – thank you. Installation of the 2nd strut confirmed that the strut forces the hatch vertically upward, and provided the extra clearance that was required to protect the body. The image below shows the 2nd strut loosely installed.
vertical rise hatch corner
Earlier in this post I had a similar picture. In it I had lifted the hatch right corner by hand to show the maximum vertical rise that I thought would be possible. I did not move the paper with the lines on it. This latest image below, shows where the hatch right corner sits in its open resting position with the 2nd strut installed.
Patcon - I was wrong about there being vertical movement in the hatch hinge. My comment made it seem as if there was slop in the hinge. My hinges are new, and they have little to no slop in the hinge. As you know, on a 240z there was originally only one strut to help raise the hatch. As you press upon the bottom of the hatch to close it you begin to overcome the 88 lbs. of force of the strut. As you push down on the bottom of the hatch; the top of the hatch, at the roofline reacts, in the opposite direction. The left side has nowhere to move as the strut is already forcing the hatch up, the length of the strut being the limiting factor. The harder you push the hatch to close it the higher the force becomes at the top of the hatch on the right side. This force causes the right side of the hatch to appear to rise, but it is actually causing the hinge to rotate on its hinge pin and in fact it creates vertical movement at the right corner. Eventually I think you create enough downward force on the bottom of the hatch to overwhelm the left side strut and the hatch rotates downward to the closed position. For whatever reason I need a little more clearance (probably earlier in the cycle) to clear the roofline. Putting the 2nd strut in on the right side seems to provide that extra lift.
Below are the results after installation of the 2nd strut and aligning the hatch.
Left Top Corner Right Top corner
Right Middle Gap Left Middle Gap
Right Bottom Corner Left Bottom Corner
Hatch Top Left Gap Hatch Top Right Gap
Hatch Roofline
Hatch Lip Corners
I am not satisfied with my work on the quarter edge corner or the hatch edge corners. I guess it just got past me at the time. I'll do better next time. As far as the the body line not matching. I think I will be able to address this with a striker adjustment and hopefully some help from installation of the glass compressing the new weather stripping.