Elvis & Brian, The B.J. reinforcement ring is designed to eliminate the lower ball joint's tendency to expand, over time and many impacts, the mounting area of the lower link arm causing a loose fit and audible clunking over bumps. The ring presses up onto the underside of the original mounting area which has an approximately 7.5mm deep by 2mm wide lip for receiving the ball joint. This thin lip is what distorts so the ring is pressed onto the lip... contracting the opening for better retention and increasing the thickness of the area by 8mm to a total combined of ten. The mounting hole becomes five times thicker and the O.D. of the area increases by over 100%. You must of course remove and re-install the ball joint to install this simple but very effective fix. While I've come with quite a few improved or unique DeLorean related parts over the years I credit this fix to Jerry Rine, back in the early 80's, from the Kapac years. The younger people here might have to consult with an old timer on the list to know who and what that was and most likely they could all tell you. Anyway Jerry mentioned he had gotten something similar from someone but didn't have anymore so I had some made and he started buying them from us as he needed them. Thusly the story of The Ring was born :) Rob Grady, P.J.Grady Inc. -----Original Message-- Jerry Rine --- From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of Elvis Nocita Sent: Saturday, March 18, 2006 2:21 AM To: dmcnews@xxxxxxxxxxxxxxx Subject: AW: [DML] Replacing lower ball joints Hey Brian, thank you. how thick is such a collar ? If you still want to install the clip on top of the balljoint, then it can be only less than a millimeter ?!? Elvis Elvis, I don't have a picture of the reinforcing collars by themselves, but I added a picture of them installed in the Photos area (PJ Grady Ball Joint Reinforcement Collar album). Rob should chime in on the specifics, but the collars press onto the control arms first, then the ball joints are pressed in. The collars just "beef-up" the thin flange that holds the ball joint in place. -Brian VIN# 4494 To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.2.4/283 - Release Date: 3/16/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.2.4/283 - Release Date: 3/16/2006 To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/