HELLBM 1557 Report post Posted April 14, 2013 Conversion to be done on my 325 Motorsport using: KW M Coupe coilovers Evo M3 Control Arms Z3 M328 trailing arm assembly(same as M Coupe) Front:HYBRID of E36 M3 and E30 NON-M3 PARTS E36 M3 and the E30 non-m3 (e.g. 325is) share the same spring diameter! Essentially, the complete E36 M3 front assembly is only altered by using E30 non-M3 strut mounts and springs. Additionally, E30 Bilstein Sport strut inserts are valved the same as E36 M3 Bilstein Sport struts. This setup requires 17" wheels (or very open 16" wheels) to clear the front brakes. The use of 1996 (and later) M3 spindles/steering knuckles in combination with 1996 (and later) control arms (and their offset bushings) is required for the front wheels to be closer to the center of the front wheel well AND the alignment to be within factory caster specifications of the E30. The front ABS sensors from the E36 M3 can be spliced into the E30 system. The E30 harness has a 2-wire system, whereas the E36 M3 has a 3-wire system. Simply match the colors and leave the third wire color disconnected. This setup allows for E36/E46 fitment wheels (approximately et41 @ 7.5" width). Rear:COMPLETE "MZ3" / "Z3M" / "M Roadster" / "M coupe" TRAILING ARM ASSEMBLY WITH AXLE SHAFTS This is arguably the biggest, badest, and best rear setup. The MZ3 (etc.) has rear brakes identical in size to E36 M3's rear brakes (same pads and discs), but a rear trailing arm setup that mimics the E30's suspension. These brakes naturally match the best with the E36 M3 front brakes. This method also requires the use of the larger, longer MZ3 axle shafts due to the wider trailing arms. The MZ3 output flanges are also required to attach the MZ3 axle shafts to the E30 differential. This method requires moderate spacing of the E30 ABS sensors so that they do not come in contact with the ABS pulse ring on the axle shafts. Why does this work? MZ3 have wider rear trailing arms than all Z3 models, but retain a shallower hub. Due to this mix, this setup allows for E36/E46 fitment wheels (approximately et41 @ 7.5" width). E36 M3 & E46 18" Mock up: Quote Share this post Link to post Share on other sites
hybrid 1043 Report post Posted April 14, 2013 sweet looks awesome. use a set of these to push the front wheel forward to give it a tad more castor and centre the wheel in the guard. http://www.treehouseracing.com/new/?wpsc-p...m-bushing-set-2 Quote Share this post Link to post Share on other sites
HELLBM 1557 Report post Posted April 14, 2013 sweet looks awesome. use a set of these to push the front wheel forward to give it a tad more castor and centre the wheel in the guard. http://www.treehouseracing.com/new/?wpsc-p...m-bushing-set-2 Thanks Josh. Quote Share this post Link to post Share on other sites
d.p.n.s 15 Report post Posted April 14, 2013 sweet looks awesome. use a set of these to push the front wheel forward to give it a tad more castor and centre the wheel in the guard. http://www.treehouseracing.com/new/?wpsc-p...m-bushing-set-2 yip thats what i used on mine and it worked perfectly Quote Share this post Link to post Share on other sites
APT 194 Report post Posted April 14, 2013 AKG offset CAB work well too. Quote Share this post Link to post Share on other sites
Garett 103 Report post Posted April 15, 2013 You can also use E46 fronts but you have to change the carriers too. On our e30 we are finding we could'nt get it low enough in the rear without going to a coil over set up or welding a upper spring cup to raise where the spring sits against. People just dont make low spring kits for e30 Quote Share this post Link to post Share on other sites
