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Author	Topic: Rear frame rail bushings?
Dynoram Journeyman Posts: 51 From: ford country Registered: May 2003	posted 08-20-2003 05:43 PM Anybody using polyurethane rear frame rail bushings ? If so who makes them? Energy could whip me up something to fit if i give them the measurements but thats a pain. Is everyone using stock rubber? Seems the stiffer bushings would help keep the shackles firm and maybe help traction? IP: Logged
Ryan Wilke Gearhead Posts: 2265 From: Stanton, Michigan 49707 Registered: Oct 2000	posted 08-20-2003 08:07 PM I think most folks concern themselves with the front leaf spring bushings and typically use aluminum bushings there.... such as with Cal-Trac bars. My rear spring bushings are OEM-style. I'd say you don't want the rear shackles to be tight, rather you want them to work/flex easily. Anyone else care to share their combo? Ryan IP: Logged
Dynoram Journeyman Posts: 51 From: ford country Registered: May 2003	posted 08-20-2003 08:48 PM See im not too familiar with how a shackle changes performance if it does at all. Im running the caltracs and a mono leaf and they gave me polyurethane bushing for the rear spring eye so i assumed putting poly in the upper mount would help. Hopefully im wrong that would make life easier. IP: Logged
Ryan Wilke Gearhead Posts: 2265 From: Stanton, Michigan 49707 Registered: Oct 2000	posted 08-22-2003 04:39 PM 1) Who's mono-leaf are you using - did you get it from Calvert Racing? 2) Is the mono-leaf steel or 'glass? 3) Are you using the OEM rear shackle or did they provide you with a different length shackle as well as the rear eye bushing? 4) Did the directions indicate that the polyurethane rear eye bushing get lubed or not? Common opinion is that the rear shackles should be an inch or so longer than OEM and that poly bushings be lube-able to ensure easy swing movement (and reduce squeaks). In my opinion, if your OEM rear shackle bushings were in very good shape, I'd probably suggest you silicone them up & put them back in. But if you figure you should replace the OEM rear shackle bushings, rather than buying OEM style bushings, I would probably suggest you step up to poly shackle bushings to match the stiffness your poly rear eye bushings. Just my 2 cents, Ryan IP: Logged

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