Gareth. J. Posted March 31, 2014 Share Posted March 31, 2014 I have offset urethane strut top insulators, I have managed to strip the threads on one stud and a second stud is getting very close to stripping also. They're offset to give -1 degree camber so it's not a case of buying a cheap easy to source replacement. Is there anyway to replace the studs in these top hats? Quote Link to comment Share on other sites More sharing options...
Glliw Posted March 31, 2014 Share Posted March 31, 2014 It's hard to tell in the pic, but can you run a die over them and cut some new threads? Quote Link to comment Share on other sites More sharing options...
AkRev Posted March 31, 2014 Share Posted March 31, 2014 If you look at the underside of the top, the studs are pressed in (kind of like wheel studs). Press out the studs and look for a replacement from spare parts or source new ones. Glliw makes a great point that you can get them cut with new threads. Just make sure that you do not change the size drastically as this will affect strength of the studs. Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted April 1, 2014 Share Posted April 1, 2014 Where did you get those insulators? Great option for a future drag car that only needs camber to correct for lowering. Quote Link to comment Share on other sites More sharing options...
Gareth. J. Posted April 1, 2014 Author Share Posted April 1, 2014 I've already run a die over them and the new threads are terrible, I think they are beyond saving. I didn't realise I'd have to de-bond the urethane to remove the studs, so I guess a new pair is required. I got them used from a club member, They are available from Stuart Wilkins Motorsport in Sydney Australia $115ea. Quote Link to comment Share on other sites More sharing options...
Glliw Posted April 1, 2014 Share Posted April 1, 2014 Good to know of another parts source that I hadn't heard of before. Though, scrolling through their list, the prices seem to be insane! It's a shame they don't have any pictures of their product on their website that I can see. Quote Link to comment Share on other sites More sharing options...
johnc Posted April 1, 2014 Share Posted April 1, 2014 The Urethane upper insulators are known to break the threaded top section off the shock shaft. Not enough flex in the urethane. That's why camber plates run spherical bearings and the factory rubber insulators have a lower durometer (60A). Quote Link to comment Share on other sites More sharing options...
seattlejester Posted April 2, 2014 Share Posted April 2, 2014 (edited) Oh no... I have something of this nature http://www.thezstore.com/page/TZS/PROD/classic20d/23-4188 Would this exhibit the strut snapping problem? Maybe it is time to consider camber plates. Edited April 2, 2014 by seattlejester Quote Link to comment Share on other sites More sharing options...
Gareth. J. Posted April 2, 2014 Author Share Posted April 2, 2014 The Urethane upper insulators are known to break the threaded top section off the shock shaft. Not enough flex in the urethane. That's why camber plates run spherical bearings and the factory rubber insulators have a lower durometer (60A). Oh, I hadn't heard of this before. I'm not sure of the hardness of the SWM items, although they are urethane they certainly aren't the hardness of energy suspension urethane. I should check the hardness, maybe see if they are available in rubber? Quote Link to comment Share on other sites More sharing options...
Glliw Posted April 3, 2014 Share Posted April 3, 2014 Natural rubber vs. urethane should make too much of a difference. Both natural rubber and urethane can come in a variety of durometers. There is a durometer tester that you can acquire to determine for certain what hardness they are but it won't matter much as suppliers of these parts don't advertise durometer so it's not like it will lead you to making an informed purchase of supplier A over supplier B. Quote Link to comment Share on other sites More sharing options...
johnc Posted April 3, 2014 Share Posted April 3, 2014 Those offset urethane isolators from MSA are the ones I've seen break the tops of shock shafts. Two with two different customers of mine. Quote Link to comment Share on other sites More sharing options...
seattlejester Posted April 3, 2014 Share Posted April 3, 2014 Hmm definitely something to keep an eye on, thanks john. Quote Link to comment Share on other sites More sharing options...
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