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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Sun, Oct-14-2012, 10:51:42 PM   #1
aeronaut
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Exclamation Rubbin's Racin'...I'll be calling TCKline

Installed Koni 1200's from TCKline, with HR OE springs. That's the only changes to the rear axle from anything other than OEM. Seems somewhere in the upper half of suspension travel, my brake caliper is rubbing the shock body. This is an exact setup that TCKline sells. Not good. Not happy. Spacing washer may be all it needs to fix this. But.

EDIT: Update, wanted to make sure any casual viewer of this thread understands that there is NOTHING wrong with this TCKLine setup. It was my incorrect diagnosis of the (non) problem.



Last edited by aeronaut; Tue, Oct-16-2012 at 02:12:48 PM.
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Old Sun, Oct-14-2012, 11:49:36 PM   #2
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Default Re: Rubbin's Racin'...I'll be calling TCKline

thats not possible if everything is installed correctly
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Old Mon, Oct-15-2012, 12:00:37 AM   #3
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Default Re: Rubbin's Racin'...I'll be calling TCKline

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Originally Posted by OahuMPower View Post
thats not possible if everything is installed correctly
+1....
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Old Mon, Oct-15-2012, 12:34:09 AM   #4
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Default Re: Rubbin's Racin'...I'll be calling TCKline

Happy to hear what could be wrong with the install. Triple checked location of washer from instructions. Bolt torqued. Using TCKline RSM's. Pretty much that simple. FYI, I believe the 1200's are larger diameter than the other Koni's.

Last edited by aeronaut; Mon, Oct-15-2012 at 01:14:30 AM.
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Old Mon, Oct-15-2012, 02:35:08 AM   #5
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Default Re: Rubbin's Racin'...I'll be calling TCKline

Weird. Shock is three bolts. Not rocket surgery. And it hardly seems possible that your caliper is in there wrong. Would it even be possible to put them on the wrong sides?

Is it happening on both sides?
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Old Mon, Oct-15-2012, 04:54:58 AM   #6
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Default Re: Rubbin's Racin'...I'll be calling TCKline

Torn upper shock mounts? Could the brake line be loose--maybe there is a brake line retaining bracket missing? Could torn RTAB pockets allow enough movement for contact?

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Old Mon, Oct-15-2012, 05:43:04 AM   #7
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Default Re: Rubbin's Racin'...I'll be calling TCKline

New RSM's. RTAB pockets recently checked, new RTAB's. Both sides rubbing (left side less than right). To my knowledge, there is no left/right rear shock, they are identical. Unknown if it would be possibly to mount rear brake calipers on wrong sides. Hmmmm. That would have happened prior to my purchase of car. BUT, my right side looks identical the Nitram's picture, so they seem to be mounted correctly. I'll measure the distance between the caliper and the shock at full extension and report back. It doesn't appear that there's as much clearance as in Nitram's picture, but there is a few inches or clearance at full extension (see my second pic).

Is rear suspension geometry/parts different on a 95?

Edit: Just checked. The rear trailing arm for 95 is a different part number than other years.

Last edited by aeronaut; Mon, Oct-15-2012 at 06:02:22 AM.
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Old Mon, Oct-15-2012, 06:15:19 AM   #8
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Default Re: Rubbin's Racin'...I'll be calling TCKline

Quote:
Originally Posted by aeronaut View Post
New RSM's. RTAB pockets recently checked, new RTAB's. Both sides rubbing (left side less than right). To my knowledge, there is no left/right rear shock, they are identical. Unknown if it would be possibly to mount rear brake calipers on wrong sides. Hmmmm. That would have happened prior to my purchase of car. BUT, my right side looks identical the Nitram's picture, so they seem to be mounted correctly. I'll measure the distance between the caliper and the shock at full extension and report back. It doesn't appear that there's as much clearance as in Nitram's picture, but there is a few inches or clearance at full extension (see my second pic).

Is rear suspension geometry/parts different on a 95?

Edit: Just checked. The rear trailing arm for 95 is a different part number than other years.
Something is wrong, they shouldn't even be close. trailing arm for a 95 is a different part number, but not much different physically.
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Old Mon, Oct-15-2012, 09:14:34 AM   #9
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Default Re: Rubbin's Racin'...I'll be calling TCKline

take the spring out of the perch and use a floor jack to jack up the shock to its full travel and see whats going on. My guess would be the inner bushings on the control arms and or the ball joints(allowing excessive camber under hard cornering/accel), any other thing would have no effect on the spacing between the caliper and the shock as already mentioned.
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Old Mon, Oct-15-2012, 10:02:18 AM   #10
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Default Re: Rubbin's Racin'...I'll be calling TCKline

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Originally Posted by A White m3 View Post
take the spring out of the perch and use a floor jack to jack up the shock to its full travel and see whats going on. My guess would be the inner bushings on the control arms and or the ball joints(allowing excessive camber under hard cornering/accel), any other thing would have no effect on the spacing between the caliper and the shock as already mentioned.
Bushings and ball joints have been inspected twice in the past few months. Stock shocks did not rub. No odd tire wear showing up. But, I will do this today!
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Discussing Rubbin's Racin'...I'll be calling TCKline in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)