elias 346 Report post Posted Saturday at 12:04 AM Looking to order some replacement bushings for my e30 in the near future, want to do the whole lot. Looking online almost everything appears to be poly or delrin. Now I’ve got some solid UHMW bushings in my 135i and it’s noisy and rattly which i don’t mind so much in that car as it’s uncomfortable anyway. however the e30 I am building as a result of this, it’s meant to be a nice comfortable sporty street car, getting an m52b28 and a zf box. Question is has anyone had any experience with the 80a poly suspension bushings? Are they still quite soft and quiet like oem, they are marketed as OEM+, with apparently no increase in NVH, would just like some first hand experience though. cheers! picture of said e30 in its current state. Quote Share this post Link to post Share on other sites
Sammo 2593 Report post Posted Saturday at 12:59 AM I've just got 80a on my CABs and sway bar bushings, which don't impact NVH as you would expect - I would keep it fresh OEM rubber everywhere else though - certainly for engine / trans / diff, although have heard subframe may be OK with Poly. Quote Share this post Link to post Share on other sites
elias 346 Report post Posted Saturday at 01:24 AM 23 minutes ago, Sammo said: I've just got 80a on my CABs and sway bar bushings, which don't impact NVH as you would expect - I would keep it fresh OEM rubber everywhere else though - certainly for engine / trans / diff, although have heard subframe may be OK with Poly. Right makes sense, unfortunately I’ve already got 80A poly engine mounts as they make mounting the m52 much easier/better. Will most likely do 80A poly for control arms, rtab, swaybars, and subframe then and oem rubber for diff and trans. 1 Quote Share this post Link to post Share on other sites
Neil McCauley 425 Report post Posted Saturday at 03:13 AM 80A is totally fine for a street driven E30 - I had purple Powerflex engine mounts / M3 offset LCA / 6x rear subframe / diff / rear suspension tops all in 80A and it was awesome. Gearbox can be a little too aggressive despite the theory that you should match them to the hardness of the engine arms. Quote Share this post Link to post Share on other sites
elias 346 Report post Posted Saturday at 04:13 AM 58 minutes ago, Neil McCauley said: 80A is totally fine for a street driven E30 - I had purple Powerflex engine mounts / M3 offset LCA / 6x rear subframe / diff / rear suspension tops all in 80A and it was awesome. Gearbox can be a little too aggressive despite the theory that you should match them to the hardness of the engine arms. Sweet as that’s good to hear, would you recommend going with the offset LCA bushings? Also thinking of getting the raised rear subframe bushings as the car will be lowered. Quote Share this post Link to post Share on other sites
Eagle 1744 Report post Posted Saturday at 05:49 AM Id recommend against poly in RTAB based on my experience. I found no real performance benefit, added noise and anywhere poly rotates will need to be re-lubed at some point, not something you want to do with trailing arms. I think solid mounted subframes are generally great with no major downsides, problem is on the E30 the diff is not isolated\part of it so you do run into issues especially if raising it. If you can find one on an old diff, run a OE solid rubber diff mount or even softer poly, makes a big difference in rear end control over the typical one. Adjustable toe\camber plates is worth doing if you have the subframe out and have to cert it. 1 1 Quote Share this post Link to post Share on other sites
Olaf 3394 Report post Posted Sunday at 03:33 AM I did my entire e30 with RUBBER. It's firm without rattling my fillings, supple when it needs to be. I think I did e36 front TABs from memory. There are many providers of OEM and aftermarket in rubber. Unless you're going racing on track, stick with rubber is my recommendation. Quote Share this post Link to post Share on other sites
elias 346 Report post Posted Sunday at 03:59 AM 25 minutes ago, Olaf said: I did my entire e30 with RUBBER. It's firm without rattling my fillings, supple when it needs to be. I think I did e36 front TABs from memory. There are many providers of OEM and aftermarket in rubber. Unless you're going racing on track, stick with rubber is my recommendation. Right ok, yeah car won’t be going near the track, have the 135i for that. Which supplier did you go with? Anyone in particular you’d reccomend. Quote Share this post Link to post Share on other sites
Olaf 3394 Report post Posted Sunday at 04:55 AM I bought almost everything from FCP Euro. They were a mix of Lemforder, Febi, all sorts. Plenty of info on my build thread. 1 Quote Share this post Link to post Share on other sites
elias 346 Report post Posted Sunday at 06:29 AM 1 hour ago, Olaf said: I bought almost everything from FCP Euro. They were a mix of Lemforder, Febi, all sorts. Plenty of info on my build thread. Sweet as I’ll take a look at your thread Quote Share this post Link to post Share on other sites
Olaf 3394 Report post Posted Sunday at 07:12 AM (edited) I've put a post at the (open) end with all the different manufacturers of rubber bushings and mounts that I used to date on my e30. Hope that helps. Edited Sunday at 07:13 AM by Olaf 1 Quote Share this post Link to post Share on other sites
