88eliminator Posted January 29, 2016 Share Posted January 29, 2016 Hello, I have a 1988 eliminator 2wd and I just recently put on 3.5" lift and right after installation I have noticed a loud clunk under the driver and passenger floor boards. All the parts I used: Rubicon express 3.5" front coils JKS UCA JKS LCA JKS adjustable Track-bar JKS adjustable sway bar links Bilstien 5100 Right after finishing putting the lift on I drove it around the block and discovered a new loud clunk that I can feel under my feet while I drive. I checked everything for movement or rubbing and the only thing that I found that seems to have play is where the LCA meet the unibody frame. I re-checked the torque specs for what the bolt should be tightened on the LCA but all my bolts were all torqued. The clunk is really loud when going over little bumps in the road but its goes away when your on the freeway. there are still minor clunk noise on the freeway but you can't really notice it. I was just wondering if anyone has had this problem before or if anyone has advise that will help me solve this irritating clunk. The truck is used as my DD and I have learned to live with it but it is definitely annoying when your on a really bumpy road. Thanks. Link to comment Share on other sites More sharing options...
oldgoat Posted January 29, 2016 Share Posted January 29, 2016 Take a look at the ID of the CA bushing dimension vs. the OD of the bolt, is there a steel sleeve inside the bushing? If the clearance is too great you will get a clunk as the control arms move. Link to comment Share on other sites More sharing options...
gogmorgo Posted January 29, 2016 Share Posted January 29, 2016 Track bar is my guess. Throw an impact onto the bolts that go into the frame, and hammer them down as best you can. Link to comment Share on other sites More sharing options...
HOrnbrod Posted January 29, 2016 Share Posted January 29, 2016 You say you used Bilstien 5100 shocks. Which Bilstien 5100 shocks? Are they longer than the pre-lift shocks? They may be maxing out if there's not enough travel. Link to comment Share on other sites More sharing options...
88eliminator Posted January 29, 2016 Author Share Posted January 29, 2016 You say you used Bilstien 5100 shocks. Which Bilstien 5100 shocks? Are they longer than the pre-lift shocks? They may be maxing out if there's not enough travel. I put the bilstien 5100's that had were capable for the 3" lift. Link to comment Share on other sites More sharing options...
HOrnbrod Posted January 29, 2016 Share Posted January 29, 2016 You say you used Bilstien 5100 shocks. Which Bilstien 5100 shocks? Are they longer than the pre-lift shocks? They may be maxing out if there's not enough travel. I put the bilstien 5100's that had were capable for the 3" lift. Got a part number? Link to comment Share on other sites More sharing options...
88eliminator Posted January 29, 2016 Author Share Posted January 29, 2016 You say you used Bilstien 5100 shocks. Which Bilstien 5100 shocks? Are they longer than the pre-lift shocks? They may be maxing out if there's not enough travel. I put the bilstien 5100's that had were capable for the 3" lift. Got a part number? 24-188197 for the 5100 in the front Link to comment Share on other sites More sharing options...
89eliminator Posted January 29, 2016 Share Posted January 29, 2016 so you can physically move the control arm when its bolted in place? Link to comment Share on other sites More sharing options...
88eliminator Posted January 29, 2016 Author Share Posted January 29, 2016 so you can physically move the control arm when its bolted in place? No you can only feel a little movement when the tire is bing rocked back and forth Link to comment Share on other sites More sharing options...
al3x_tayl0r Posted January 29, 2016 Share Posted January 29, 2016 I would check the simple stuff first for example the exhaust hitting the cross-brace (I had that problem and it felt like something was hitting under my feet becasue the impact on the brace), changing drive-line angles can change the stress on the rear trans/transfer-case mount and motor mounts, if you have the stock rubber like trans mount. Could be something simple is what I'm trying to get at Link to comment Share on other sites More sharing options...
HOrnbrod Posted January 29, 2016 Share Posted January 29, 2016 You say you used Bilstien 5100 shocks. Which Bilstien 5100 shocks? Are they longer than the pre-lift shocks? They may be maxing out if there's not enough travel. I put the bilstien 5100's that had were capable for the 3" lift. Got a part number? 24-188197 for the 5100 in the front :thumbsup: Link to comment Share on other sites More sharing options...
89eliminator Posted February 1, 2016 Share Posted February 1, 2016 so you can physically move the control arm when its bolted in place? No you can only feel a little movement when the tire is bing rocked back and forth there should be ZERO movement. this is the first place i would be investigating. check to make sure the bolt is the proper size and that the bushing sleeve is the proper size. Link to comment Share on other sites More sharing options...
88eliminator Posted February 1, 2016 Author Share Posted February 1, 2016 so you can physically move the control arm when its bolted in place? No you can only feel a little movement when the tire is bing rocked back and forth there should be ZERO movement. this is the first place i would be investigating. check to make sure the bolt is the proper size and that the bushing sleeve is the proper size. Yes I will double check the bolt size and bushing sleeve size when I get the chance. I'm also going to put the old CA back on to see if the problem is the JKS arms. Thanks so much for your help. Link to comment Share on other sites More sharing options...
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