88pathoffroad Posted June 12, 2006 Share Posted June 12, 2006 Anyone have a line on affordable castable (liquid) polyurethane suitable for making or filling stock bushings? I've been looking around but the choices seem to be kinda unclear on what I should get and use. I want to make my own diff drop bushings if possible, fill my trans mount and motor mounts, etc... Link to comment Share on other sites More sharing options...
FLApathy Posted June 12, 2006 Share Posted June 12, 2006 hmm, i dont but im intrested too Link to comment Share on other sites More sharing options...
sammyb33 Posted June 13, 2006 Share Posted June 13, 2006 if you made your own diff drop bushings i think i would pay for a set.... Link to comment Share on other sites More sharing options...
unccpathfinder Posted June 13, 2006 Share Posted June 13, 2006 ex gf's dad used to make castings for all kinds of things out of dental plastar...like what they make a sculpture of ure teeth to cast dentures Link to comment Share on other sites More sharing options...
chunkster Posted June 13, 2006 Share Posted June 13, 2006 I got this from a friend's fix-it guide for repairing urethane bushings for this BMW control arms. I did a little research and found this company that makes certain urethane compounds from mix. http://www.itw-devcon.com.au/driver.asp?pa...exane+urethanes The items he used were Flexane - 94 Liquid and Curing agent. Hope this helps. Chunk. Link to comment Share on other sites More sharing options...
88pathoffroad Posted June 13, 2006 Author Share Posted June 13, 2006 After doing a bunch of searching and reading, apparently the Flexane 94 is VERY stiff stuff. I should probably go with the Flexane 80 to save trouble later on down the road. Small amounts aren't that spendy, but it's about $30-50 for a kit. Ow. Still better than $150 for 4 bushings from SLR! Link to comment Share on other sites More sharing options...
cdhicks99 Posted June 13, 2006 Share Posted June 13, 2006 If I had the molds my dad works for a chemical company he is currently making polyurethane, he makes crap all the time in his down time. Link to comment Share on other sites More sharing options...
chunkster Posted June 13, 2006 Share Posted June 13, 2006 After doing a bunch of searching and reading, apparently the Flexane 94 is VERY stiff stuff. I should probably go with the Flexane 80 to save trouble later on down the road. Small amounts aren't that spendy, but it's about $30-50 for a kit. Ow. Still better than $150 for 4 bushings from SLR! Wow, didn't realize the price per kit. However, if you can make some for others and charge a small fee, you would recoup some of the expense. I'm sure guys on the the board would consider it. I know my buddy only used a bit of it and helped others on the local BMW club with the leftovers. It basically paid for itself. Just a thought. Chunk Link to comment Share on other sites More sharing options...
tmorgan4 Posted June 13, 2006 Share Posted June 13, 2006 How would you go about filling stock bushings? I like the idea of making them compared to paying a few hundred dollars for every bushing on the car from AC. Link to comment Share on other sites More sharing options...
mws Posted June 13, 2006 Share Posted June 13, 2006 I believe you could use 2 part casting silicones to make extremely flexible molds. We have done that here - jsut carve the desired shape out of plastic or aluminum or wood or whatever (just needs to be able to have the desired surface finish) and then pour the silicone around it. Once it cures, carefully peel it off and you have a reusable mold. Link to comment Share on other sites More sharing options...
88pathoffroad Posted June 13, 2006 Author Share Posted June 13, 2006 To fill stock motor mounts etc, you remove the rubber either by burning, drilling, cutting or pulling it out, then you use a jig to bolt the mount back together empty so it can be filled. Making new bushings would be easy as well, use a stock bushing for making a mold as Martin described. Link to comment Share on other sites More sharing options...
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