acecadillac Posted October 24, 2005 Report Share Posted October 24, 2005 I was thinking of welding the inner sleave of the bushings in the rear knuckle to remove the play. Common sense tells me that the design of the the floating bushing was done for a reason. Do you think that reason is comfort or necessary as part of the design. In other words, if I do this, will I cause some other problem? Link to comment Share on other sites More sharing options...
Scotty Posted October 24, 2005 Report Share Posted October 24, 2005 Those are bushings in the rear knuckle, the rubber wears out and there is play. The knuckle needs replacing, if there is play in the various bushings. The knuckle is replaced as an assembly. I would keep your welding rod away from the suspension. Link to comment Share on other sites More sharing options...
acecadillac Posted October 24, 2005 Author Report Share Posted October 24, 2005 Those are bushings in the rear knuckle, the rubber wears out and there is play. The knuckle needs replacing, if there is play in the various bushings. The knuckle is replaced as an assembly. I would keep your welding rod away from the suspension. Hi Scotty, I took my knuckle off and tore appart the bushings. It consists on a metal tube packed with some sort of grease held together with a rubber boot and a couple of metal rings. No wonder why the fail. My boots were torn and the grease came out. I actually removed all the old material and replaced it will automotive goop. "All I can say is...they don't make them like they used ta." -- Scotty, Star Trek V: The Final Frontier Cheers Link to comment Share on other sites More sharing options...
Scotty Posted October 24, 2005 Report Share Posted October 24, 2005 If you can take a photo and post it, I would like to see what you are talking about, I know of no boots on the knuckle. Mike Link to comment Share on other sites More sharing options...
acecadillac Posted October 26, 2005 Author Report Share Posted October 26, 2005 Tried to send a picture in but file is larger than 64 k? Any suggestions? Link to comment Share on other sites More sharing options...
Scotty Posted October 26, 2005 Report Share Posted October 26, 2005 Tried to send a picture in but file is larger than 64 k? Any suggestions? Email it too me, I just sent you my email address and if I can shrink it I'll post it, Mike Link to comment Share on other sites More sharing options...
Regis Posted October 26, 2005 Report Share Posted October 26, 2005 I noticed that too when I had my one rear done. It's a real shame they didn't come up with a replaceable bushing system for those knuckles. So much waste of good metal. I think Logan might want to consider expanding his business into remanufacturing knuckles. Just an idea. "Burns" rubber " I've never considered myself to be all that conservative, but it seems the more liberal some people get the more conservative I become. " Link to comment Share on other sites More sharing options...
Scotty Posted October 26, 2005 Report Share Posted October 26, 2005 I noticed that too when I had my one rear done. It's a real shame they didn't come up with a replaceable bushing system for those knuckles. So much waste of good metal. I think Logan might want to consider expanding his business into remanufacturing knuckles. Just an idea. Its such a waste not to have replaceable bushings in the knuckle. I would love to replace my knuckle bushings they look dried out, but I am not going to replace the knuckle unless the bushings are shot Link to comment Share on other sites More sharing options...
caddypete Posted October 26, 2005 Report Share Posted October 26, 2005 When I replaced my rear knuckles, my brother in law wanted to take my old knuckles and replace the bushings with brass collars to see if it would work that way. He never did pick them up, now I 'm starting to wonder if that would really work. might be a interesting task to try. The knuckles are such a waste of money because the bushings are not replacable. Link to comment Share on other sites More sharing options...
Scotty Posted October 26, 2005 Report Share Posted October 26, 2005 The bushings are rubber. Changing them to brass would transfer too much road shock in my humble opinion.. They should in deed have replacement rubber bushings. Link to comment Share on other sites More sharing options...
Logan Posted October 27, 2005 Report Share Posted October 27, 2005 Some bushing.....somewhere....will fit. It may be for a Fiat or VW etc. I would talk to these guys. Seem to have alot of bushing applications figured out. http://www.suspension.com Logan Diagnostic LLC www.airbagcrash.com www.ledfix.com www.ledfix.com/yukontaillightrepair.html www.ledfix.com/ledreplacements.html www.ledfix.com/j42385toolrental.html Link to comment Share on other sites More sharing options...
Logan Posted October 27, 2005 Report Share Posted October 27, 2005 Ok....is it a control arm bushing? Or a knuckle bushing issue? Logan Diagnostic LLC www.airbagcrash.com www.ledfix.com www.ledfix.com/yukontaillightrepair.html www.ledfix.com/ledreplacements.html www.ledfix.com/j42385toolrental.html Link to comment Share on other sites More sharing options...
johnnydone Posted October 28, 2005 Report Share Posted October 28, 2005 does any one know who the manufactur is if there was a way to call them maybe they could enlighten us on who they get the bushings from etc just a thought Link to comment Share on other sites More sharing options...
northstar101 Posted October 28, 2005 Report Share Posted October 28, 2005 This is a really interesting topic since I'm having the same problem with my rear knuckles. How much does the whole assembly cost to replace? There must be replacement bushings out there somewhere. I'm definately keeping an eye on this thread! Phil Link to comment Share on other sites More sharing options...
Scotty Posted October 28, 2005 Report Share Posted October 28, 2005 This is a really interesting topic since I'm having the same problem with my rear knuckles. How much does the whole assembly cost to replace? There must be replacement bushings out there somewhere. I'm definately keeping an eye on this thread! Phil I tried looking them up on Rockauto.com but could not find them. I can't believe there is no aftermarket solution yet unless its due to the manufacturing process (injection?) If I recall knuckles for my Deville were $175.. Link to comment Share on other sites More sharing options...
acecadillac Posted October 29, 2005 Author Report Share Posted October 29, 2005 Tried to send a picture in but file is larger than 64 k? Any suggestions? Email it too me, I just sent you my email address and if I can shrink it I'll post it, Mike Hi Mike (Scotty), I have, at least for the past two months resolved my knuckle bushing problem. I resolved it by removing the boots and the grease they hold in the knuckle bushing. I replaced the sealed grease with a product called Automotive Goop. This stuff after 72 hours becomes a very hard rubber. It is somewhat labourous in that I had to add a little Goop every 6 hours on each side of the bushing, several times to ensure air pockets where filled. As you will see in one of my pictures, a failed attempt with the Goop due to air pockets. I only did this fix on the upper bushings, which are smaller in design than the lowers. But if you look close, the bushings on my car are not rubber. They consist of a tub, that is expanded in the middle, to ensure it never comes out of the knuckle, packed with some sort of dried grease. Then it is sealed in with a boot and rings. These boots tear and the grease leaks out. This is why they fail. I have included three photos to your email address. Normal, boot torn off, and failed knuckle fix. Regards Link to comment Share on other sites More sharing options...
Scotty Posted October 29, 2005 Report Share Posted October 29, 2005 From the photos you sent me, your knuckle bushings are very different than mine, mine look to be solid bushings much like say the dog bone bushings but smaller. Do you think its possible to develop a replacement bushing for your hub? Also, I am surprised that your bushing would be 'packed' in grease with grease seals 1) are you sure that is the case, and 2) is it possible that someone prior to you owning the car injected a petroleum based lube into the bushing that broke it down? As you know rubber and petroleum based lubes will destroy rubber. This is where we miss the guru. Is there such a thing as a wet (grease) bushing such as you are describing? I go back to my premise that grease and rubber don't mix unless of course it was a silicone grease Link to comment Share on other sites More sharing options...
acecadillac Posted October 31, 2005 Author Report Share Posted October 31, 2005 From the photos you sent me, your knuckle bushings are very different than mine, mine look to be solid bushings much like say the dog bone bushings but smaller. Do you think its possible to develop a replacement bushing for your hub? Also, I am surprised that your bushing would be 'packed' in grease with grease seals 1) are you sure that is the case, and 2) is it possible that someone prior to you owning the car injected a petroleum based lube into the bushing that broke it down? As you know rubber and petroleum based lubes will destroy rubber. This is where we miss the guru. Is there such a thing as a wet (grease) bushing such as you are describing? I go back to my premise that grease and rubber don't mix unless of course it was a silicone grease Hi Mike, I guess it is possible to replace the bushings in mine, but a special press would be needed to remove the old bushings, if a suitable one was found. I tried to remove it one no avail. I was speaking with a mechanic that works on RCMP bullet proof Devilles and he replaced the Deville's knuckle bushing from some GMC truck bushing. I lost contact with him. I don't really know what the substance is. It feels like dry grease or maybe a better anologie would be plastercine. I don't think the prior owner modified my STS's bushings as I have a couple of sets from our local wreckers and have been experimenting with them for over a year. Currently the Automotive Goop is working for me as there is no more play at 12 and 6 as you described to the Lad with side to side play. However I still have a bit of a loose *smurf* end on this car and it has new passive struts and Eibach lowering springs. I can't wait to here about your investigation. Cheers Link to comment Share on other sites More sharing options...
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