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Need help with BC coilover install, rear spring
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02-08-2011, 05:06 PM | #1 |
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Need help with BC coilover install, rear spring
Trying to install the rear spring on the BC coilover kit on my 07 335.
The question is how does the spring and perch sit in the body. When I try to mount the perch into the upper coil mount it does not fit in the hole. The perch seems too big (size matters :^) Here are some pics of the whole system, perch and where I would think it mounts. Thoughts? |
02-08-2011, 06:19 PM | #2 | |
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Is that "hole" a removable part? Not sure if its actually the rubber piece or not. Maybe you can pull that part off and try the installation again. Or, try to flip the spring assembly upside down. I haven't seen or installed BC coilovers in person but I'm familiar with the companies that handle the manufacturing. If you can't pull that piece off, that means someone over there messed up in terms of measuring that lower perch and made it too big. But thats highly unlikely unless you are their #1 (meaning, first) customer. Sometimes the car changes around so much that even though the chassis is the same, there are small adjustments causing hardware incompatibility. I'm also curious as to why the springs are coiled so close together... doesnt look like it will do anything functional if they are already fully compressed Peter Last edited by Peter@VMRWheels; 02-08-2011 at 09:20 PM.. |
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02-08-2011, 08:38 PM | #3 |
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I think Peter has the right idea. I've seen them installed both with and without the factory perch.
Here's an install picture (not my car) with the top perch removed. |
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02-08-2011, 08:38 PM | #4 | |
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I called BC racing and the sales person was the only one available. He did give it a good try and after some pics emailed we kind of gave up. Will talk to the tech guy in the AM. |
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02-08-2011, 08:38 PM | #5 |
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02-08-2011, 09:25 PM | #6 | |
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02-08-2011, 09:56 PM | #7 |
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I've done springs but not height adjustable so I'm not 100% sure. Expecting my coilovers sometime next week but I have done alot of research.
Here's another photo from a different install that shows the perch. I would guess that it's just friction fit. |
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02-09-2011, 07:46 AM | #8 | |
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I was also looking at this image and I am unable to see that cup (what ever its called). Was trying to find some images of the back frame to see if it would show it as a part that was replaceable. |
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02-09-2011, 12:20 PM | #10 | |
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http://www.e90post.com/forums/showth...light=ast+4100 http://www.e90post.com/forums/showth...highlight=sway |
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02-09-2011, 01:47 PM | #11 | |
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Big thanks, I was hitting a wall with that install. Thanks again. |
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01-10-2013, 03:11 AM | #12 | |
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Should the perch be removed or left in?
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01-10-2013, 09:50 AM | #13 |
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depends...mine worked with it in and out but all you do it just tap on the perch and it just falls off.
if it doesnt fit with the perch on then just take it off
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01-10-2013, 11:54 AM | #14 |
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So yours fit in there?...mine sure didnt LOL!! Guess I will remove it. I was curious if you used this on the bottom....some did some didnt....the stock OEM is trashed so I figured I would use it.
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JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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01-10-2013, 01:43 PM | #15 |
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it depends on the springs you have...some should and some shouldnt lol. but for most linear springs you do not use them because they dont fit...but if its for say eibach pro kit then you do use them.
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Space Gray l 6MT l OSG LSD w/ VAC Race Diff Cover l Cobb e30 l Morr vs8.2 l UUC SSK w/ DSSR l VSRF Catless Dps l RPI Intercooler l CDV Removed l HID AE 8000k l ETS Catback l AST 5200 w/ Vorshlag Camber Plates l ER Dual Oil Coolers l Rear Camber and Toe Arms l K&N Drop In l Solid Tranny/Diff/Subframe Bushings l Bridgestone RE-11
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01-10-2013, 02:16 PM | #16 | |
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I can do a turbo install with no questions, but have several on a spring install
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JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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01-10-2013, 02:58 PM | #17 | |
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but to answer your question yes it just sits there metal on metal...i felt a little iffy about the whole thing too but its ok
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01-10-2013, 03:00 PM | #18 | |
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Love doing turbo installs, lets meet 1/2 way!!
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JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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