Replaced my frame rails and am looking for info on where the tension compression bucket locates on the new rocker. Can anyone provide measurements in the image for me?

Do the illustrations in the Body chapter have any value?

1972 -

Thanks Zed Head. I had seen this but I cant seem to see anything that would help locate them. Hoping someone here could measure there car and post what they show.

Legitimate question. Unfortunately, I'm not aware of any convenient answer.

With 15+ years on this site, I don't recall anyone ever having addressed this question in the past.

Nissan engineers quite rightly decided that the positioning of the T/C rod bracket mattered only in terms of the location (X-Y coordinates) of the centrepoint of the hole where the T/C strut passes through the bracket. They were concerned only in terms of pulling a frame straight after a collision. The possibility that the T/C bracket might, by some circumstance (like yours), become detached from the frame rail was irrelevant.

To get the answer you're looking for, you'll need to do some measurements of the bracket, focused on your own approximation (or calculation) of where the aforementioned strut/bracket intersection centrepoint lies relative to the front or rear end of the bracket. After that, you can reference it back to where, say, the flange of the frame rail where it joins with the firewall.

Geometrically speaking, it's a tricky-but-not-impossible challenge (depends on where you gave up on math when you were in high school). Maybe someone here will have the enthusiasm to do it for you! 😎

In terms of how your Z wilI brake and corner, I suspect that the accuracy of the fore-aft positioning of the bracket relative to the firewall needs to be no better than plus/minus 1/16".

Edited March 26Mar 26 by Namerow

Hi Namerow. Its a long story on how this came about but I was able to find a clearer .tif file of the print ( attached) ZedHead provided. In it I found the measuring points. Using a plumbob, I was able to duplicate the measurement of the factory drawing. after measuring, adjusting and repeating it multiple times, I have welded in the passenger side and have the drivers mocked up and will welded it tomorrow. The hole is noted to be 34 degrees from the frame rail and that is what I have.

The frame rails I am using came from Zedd savers many years ago. I recently started back on the project. They are still available from several suppliers. I suspect folks measure off the old rusty one when these are replaced, unfortunately they were not included with the project and I didn't have any reference. I see that a few suppliers offer the complete frame rail which is probably way to go.

I will add some pics in the next few days. Thanks for the info.

240Z Chassis Dimensions - Source 1970 FSM Dated 15AUG70.tif