Just read my own email, and I guess you folks must be wondering if I am coherent or not. I mixed up left and right below when quoting the end markings. Sorry about that. I'll do more proof reading next time! Jim -----Original Message----- From: mailing-list-owner@xxxxxxxxxxxxxxxx [mailto:mailing-list-owner@xxxxxxxxxxxxxxxx]On Behalf Of Jim Stacey Sent: Sunday, April 28, 2002 8:11 PM To: Imperial club mail list Subject: IML: '73 torsion bars - which end is which? Greetings, I pulled the torsion bars out of the '73 I'm restoring this weekend and noticed something that puzzles me. I know there is a left and a right bar, but which end of the bars goes to the front (control arm) and which one goes to the back (frame)? It think I've proved to myself that by reversing the bar end-for-end it would end up twisting the opposite way, which would defeat the purpose of specific left/right bars. I checked the '73 FSM, but can't find any reference to putting a particular end of the bar in a particular location. It also says that R or L is marked on ONE end of the bars, but in my case, they are marked on BOTH ends. My bars are stamped as follows: Right bar - one end says "UPD513L" the other end says "513L 1.02" Left bar - one end says "UPD512R" the other end says "512R 1.02" I noticed on the OIC site a reference to torsion bars (not sure what year was being discussed) with the end marked left or right going in to the control arm, but since both ends are marked L or R in this case, that doesn't help. BTW, I can't rely on how they were installed before I removed them, because I had them out myself about 20 years ago before I put the car away for storage, and may have got them back in wrong. Just for interest however, one was installed with the "UPD" end in the control arm and the other had the "UPD" end in the frame. (I suspect I had them in wrong!) I am wondering if I am missing something obvious by not knowing what "UPD" stands for? Does anyone know which end goes into the control arm, and if so, what is the source of this information? Thanks, Jim Stacey '73 4drht in 1000 pieces near Toronto