Lone Star 1 Posted March 6, 2003 Share Posted March 6, 2003 Not sure where to post this. Latley when I hit about 70 MPH I hear a loud rattle develop just behine the drivers side in the quarter panel area. As I decelerate it get louder untill about 60 or so, then goes away. Some times it remines me of the sound a tire thats comming apart makes. Its getting worse, and now sometimes I hear it as slow as 30 MPH. Any ideas? Quote Link to comment Share on other sites More sharing options...
Guest Tim78zt Posted March 6, 2003 Share Posted March 6, 2003 loose power antenna bracket? Maybe a broken strut bushing. Just guessing! I think you have a 280Z, right? Tim78zt Quote Link to comment Share on other sites More sharing options...
Tim240z Posted March 6, 2003 Share Posted March 6, 2003 Since it seems to be speed related, you might want to check the wheel balance on the rears, maybe you have thrown a wheel weight. If so, check the bearings too! Tim Quote Link to comment Share on other sites More sharing options...
Lone Star 1 Posted March 6, 2003 Author Share Posted March 6, 2003 Just had the wheel rebalanced, not the problem. Can a wheel bearing make this kind of sound. I'll check that bracket right now. thanks guys. Quote Link to comment Share on other sites More sharing options...
Tim240z Posted March 6, 2003 Share Posted March 6, 2003 Just had the wheel rebalanced, not the problem. Can a wheel bearing make this kind of sound. I'll check that bracket right now. thanks guys. Usually wheel bearing make a humming/droaning sound. Have someone lay in the back of the car and see if they can pin it down? Tim Quote Link to comment Share on other sites More sharing options...
Lone Star 1 Posted March 6, 2003 Author Share Posted March 6, 2003 Not the antenna bracket, it's already been removed. I replaced the shocks last weekend, but this rattle started a month ago. It's just getting worse and more frequent. Can the strut mount make this kind of rattle and still look good and fill solid when I had it out replacing the strut? Quote Link to comment Share on other sites More sharing options...
Guest Tim78zt Posted March 6, 2003 Share Posted March 6, 2003 what did you use to tighten the gland nut to the shock tower? It may have worked itself loose (again!)?? Which bump stops did you use between the nut and the strut mount (bushing)? Urethane? Tim78zt (still just guessing!!) Quote Link to comment Share on other sites More sharing options...
Datsun660z Posted March 7, 2003 Share Posted March 7, 2003 What about the u joint in the half shaft? Quote Link to comment Share on other sites More sharing options...
jeromio Posted March 7, 2003 Share Posted March 7, 2003 I agree with the comment about the ujoint in the half-shaft. If one (or more) of the bearing cups goes dry, it's usually a logorythmic degradation from there. The post(s) will get ground down, cause a little bit of vibration, that makes the wear even worse, etc. It'll cause noticeable noise/vibration at a certain speed. Then that speed range widens out (say, goes from 65-70 to 50-75, etc) until the unit completely fails. Waaaaay long ago my passenger side shaft had a joint go gradually bad like that until it was just crazy bad. Had one post of the joint ground down to a little nub that rattled around inside a highly messed up bearing cup (with no bearings left of course). I switched to CV joints rather than mess with rebuilding those shafts. Quote Link to comment Share on other sites More sharing options...
jt1 Posted March 7, 2003 Share Posted March 7, 2003 While the rattle is happening, try holding the gas steady and feathering in the brakes. If the tune changes as you ease into the brakes, I'd look at the u-joints and the flange bolts(both ends) very carefully. John Quote Link to comment Share on other sites More sharing options...
Lone Star 1 Posted March 7, 2003 Author Share Posted March 7, 2003 Yes the noise settles when I touch the brakes. Whats the best way to chech the u-joints. I Don't guess Nissan would warrent thost 30 year joints, I was only putting 325 ft/lb of tork on them for the last year. Quote Link to comment Share on other sites More sharing options...
Guest Tim78zt Posted March 7, 2003 Share Posted March 7, 2003 I'd say 325 ft/lb is a good way to check them already. Time to replace them with CVs if you're twisting them that hard!! I'm glad you found the answer!! Tim78zt Quote Link to comment Share on other sites More sharing options...
Guest cag4 Posted March 7, 2003 Share Posted March 7, 2003 Can anyone point to a good reference for the CV conversion? I'm having the same symptoms in my 280z with Ford 302. Thanks, Charles Quote Link to comment Share on other sites More sharing options...
jeromio Posted March 8, 2003 Share Posted March 8, 2003 Can't help you on a "good reference" - how about an excellent reference instead: http://www.zhome.com/rnt/FordPower/HalfShaft.html (Terry, blueovalZ's site) Quote Link to comment Share on other sites More sharing options...
Guest cag4 Posted March 9, 2003 Share Posted March 9, 2003 Excellent is right -- thanks! charles Quote Link to comment Share on other sites More sharing options...
Lone Star 1 Posted March 10, 2003 Author Share Posted March 10, 2003 Does any one have the name and phone number of the local salavge yard here in the DFW area. Quote Link to comment Share on other sites More sharing options...
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