Boost Junky 1 Report post Posted April 22, 2009 Have done a search on here and Google but can not find much information on solid mounting my rear subframe. There is bushes to help stiffen the subframe up but I have heard of other people welding large washers at each end or clamping the factory bushings by adding plenty of washers against the factory bushes. I know naughty bmw has done the welded washers to the ends of the subframe bushes. Can anyone else shed anymore light on doing this? Cheers, Luke Quote Share this post Link to post Share on other sites
JiB 2 Report post Posted April 22, 2009 I was told you would also have to solid mount and reinforce the diff. Lots of $$$ involved if you don't want failures. Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted April 22, 2009 I was told you would also have to solid mount and reinforce the diff. Lots of $$$ involved if you don't want failures. So solid mounting the subframe means the movement from the subframe transfers to the diff I take it? So I would need a solid mount for the diff and to reinforce where the diff mounts to the underbody of the car to prevent it ripping away? Quote Share this post Link to post Share on other sites
JiB 2 Report post Posted April 22, 2009 So solid mounting the subframe means the movement from the subframe transfers to the diff I take it? So I would need a solid mount for the diff and to reinforce where the diff mounts to the underbody of the car to prevent it ripping away? Yeah, that's the idea. Remember that bushes absorb a lot of vibration stress - when solid mounting that will transfer straight to the attachments. Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted April 22, 2009 Yeah, that's the idea. Remember that bushes absorb a lot of vibration stress - when solid mounting that will transfer straight to the attachments. Yea didnt think about that but makes perfect sense thanks dude. Might just install my 5stud conversion for now to get the car mobile again and address more serious modifications closer to track time I think Quote Share this post Link to post Share on other sites
bravo 35 Report post Posted April 22, 2009 You can buy solid subframe mounts from Ireland Engineering. bmw2002.com. I'll go find a link... Quote Share this post Link to post Share on other sites
bravo 35 Report post Posted April 22, 2009 OK They don't have any anymore - they definitely used to. Turner motorsport is just as good and a reputable bmw aftermarket performance part distributor. Plenty of bimmersport guys have stuff from them (suspension and braided brake lines etc). Turner Solid mount kit. The benefits are less flex, the downside is harsher ride and more vibration. Quote Share this post Link to post Share on other sites
Silver Fox 43 Report post Posted April 22, 2009 (edited) Ireland's now use these, Delrin. http://store.nexternal.com/shared/StoreFro...reland&All= Go to E30, then performance parts, then suspension, then solid rear mounts. Good price, you need 2. Edited April 22, 2009 by Silver Fox Quote Share this post Link to post Share on other sites
bravo 35 Report post Posted April 22, 2009 You mean these David? Quote Share this post Link to post Share on other sites
Silver Fox 43 Report post Posted April 22, 2009 Yeah, wouldn't put up the whole link? Why? You smart arse. Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted April 22, 2009 Haha you guys crack me up. So use urethane bushings instead of solid aluminum? They arnt to badly priced at all.. Remember im using E36 rear subframe im sure they are the same though as far as the mounting bushes go. Thanks guys Quote Share this post Link to post Share on other sites
Silver Fox 43 Report post Posted April 22, 2009 Go to my link and follow it thru the E36 side, they do for the Z3/ti rears. Same price. Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted April 22, 2009 Go to my link and follow it thru the E36 side, they do for the Z3/ti rears. Same price. Oh yea I saw that haha cheers So there is no where I can purchase some in NZ? I have looked through the Nolothane book at work no such luck... I could possibly match something up from measurements. Quote Share this post Link to post Share on other sites
bravo 35 Report post Posted April 22, 2009 Talk to Suspensiontech about what they can make for you. Or Autolign. I'm pretty sure that both do custom bushes. Susp tech did the valving on my Bilsteins. Chris is a mate of Keith Hartley (aka SUSPENSION - H&R forum Sponsor). David - the site uses frames - you need to get the url for the frame, not the parent page - frames are FTL on modern web pages. Quote Share this post Link to post Share on other sites
|ncary 0 Report post Posted April 23, 2009 http://www.akgmotorsport.com/e30products.html Go about 1/3 down the page to see the bushings you need. These are the best, used and recommended by anyone wanting a road legal race car (or race car), $130 USD for subframe and trailing arms in 75D delrin (think about nearly as hard as a golf ball) Aluminum there too, very harsh though. A full set for replacing every rubber part on your car will be about 300 US. Not bad at all, my set is on the way Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted April 23, 2009 Talk to Suspensiontech about what they can make for you. Or Autolign. I'm pretty sure that both do custom bushes. Susp tech did the valving on my Bilsteins. Chris is a mate of Keith Hartley (aka SUSPENSION - H&R forum Sponsor). David - the site uses frames - you need to get the url for the frame, not the parent page - frames are FTL on modern web pages. Cheers Graham, autlign are one of our suppliers at work so that should be mint ill send my bushes upto their workshop if need be. http://www.akgmotorsport.com/e30products.html Go about 1/3 down the page to see the bushings you need. These are the best, used and recommended by anyone wanting a road legal race car (or race car), $130 USD for subframe and trailing arms in 75D delrin (think about nearly as hard as a golf ball) Aluminum there too, very harsh though. A full set for replacing every rubber part on your car will be about 300 US. Not bad at all, my set is on the way Yea those prices are all real good but im sure I can do it cheaper than that through autolign or doing custom solid alloy mounts like naughty bmw. Thanks for the links guys have seen them all before and atleast I know what options are available now PS. front E36 Hubs are on with offset bushes and look at my castor Im thinking of fabricating my own adjustable front lower control arms to allow castor adjustment, got the people and know how... just a matter of wether i can get them certified or not. Anyone know why the offset bushes didnt fix the castor? Quote Share this post Link to post Share on other sites
westy 614 Report post Posted April 23, 2009 You need offset bushes + E36 EVO control arms. Its not a caster problem its a problem with the stub axle location. Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted April 27, 2009 You need offset bushes + E36 EVO control arms. Its not a caster problem its a problem with the stub axle location. Ok so ive got the offset bushes just need the E36 EVO control arms.. are they the MSport arms? I might wait till ive put my coilovers in first and then see how it all sits and take it from there. If you have got the people why dont you get them to turn up some rear sub frame bushes for you like the delrin being sold - Delrin is just an engineering plastic and you can buy a 70mm diameter rod of it and make your own. Plastics like delrin which is a trade name and Acetyl whict is a type have hardnesses of 75 plus - cast Urethane is 50 to 65 Dd so softer Some OE M3 modified rubber bushes are 75 d PS that front geometry looks seriously wrong Yea I might press the OE E36 standard ones out and see what some of the boys can machine up for me. Whoa so some of the M3 ones are fairly hard! Haha yea gotta do something about that.. have now got the correct 9" rims on the front now they clear the guard much better but still touch, got my BC Coilovers today so ill bring the height up slightly and do some guard work then just need to address the castor issue. Thanks guys Quote Share this post Link to post Share on other sites
Mike 1 Report post Posted April 27, 2009 Ok so ive got the offset bushes just need the E36 EVO control arms.. are they the MSport arms? I might wait till ive put my coilovers in first and then see how it all sits and take it from there. MSport arms? As tony said you need the E36 M3 Evo arms, these arms have extra castor built into them and are different to all other e36/e30 arms. Quote Share this post Link to post Share on other sites
Katalyst 0 Report post Posted April 27, 2009 evo arms on ebay Click here! Quote Share this post Link to post Share on other sites
CamB 48 Report post Posted April 27, 2009 ROger that - '96-'99 M3 control arms plus offset bushes almost gets the wheels where they belong. Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted April 27, 2009 MSport arms? As tony said you need the E36 M3 Evo arms, these arms have extra castor built into them and are different to all other e36/e30 arms. Ahh my bad i should have said M3 arms.. hopefully I can find some here in NZ. Thanks guys for the help. Quote Share this post Link to post Share on other sites
ED1RTY 2 Report post Posted April 27, 2009 Just saw this... Seen the sig and thought huh?! new wheels Liking it.. Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted April 27, 2009 Just saw this... Seen the sig and thought huh?! new wheels Liking it.. Hah thanks Chris! Just need to make them fit properly now.. cant even steer lol help if i had springs in it aye. Will put coilovers in this week and gotta put the 5 stud on the rear still. Quote Share this post Link to post Share on other sites
Forrest 35 Report post Posted April 27, 2009 Car is looking Pimp Luke, get that castor sorted and you'l be all set to tear it up Quote Share this post Link to post Share on other sites
