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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 Wed, Oct-27-2010, 05:49:34 PM   #21
M///Fanatic
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Originally Posted by OahuMPower View Post
1) are you doing this on the car?

2) did u ever take apart the caliper?


3) how are you trying to push the piston back into the caliper?
1) Yes, I unbolted the caliper and opened the bleeder bolt and attempted to compress with a c clamp.
2) Not completely no.
3) With a c clamp

Last edited by M///Fanatic; Wed, Oct-27-2010 at 05:58:05 PM.
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Old Wed, Oct-27-2010, 06:37:28 PM   #22
epj3
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Originally Posted by Roland H View Post
If it doesn't pull when driving or braking.... It could possibly be the guide bushings.

I rebuilt all four of my calipers, put on new pads and rotors, and they started squeeling terribly after bed-in. I couldn't figure it out until looked and saw that the pad was only touching the outside edges of the rotor... Just ordered some solid guide bushings from TMS, if that doesn't do the trick, I'm getting a BBK, but I doubt that these won't fix my issue.
If they aren't touching using the stock guides, the solid guide bushings will only make it worse. Did you use new pads after the rebuild? Likely the pad material had wear patterns from before the rebuild. When I went from solid guide bushings back to stock, my brakes squealed for at least 4 months.
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Old Thu, Oct-28-2010, 12:30:47 AM   #23
WRXEATR
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Originally Posted by M///Fanatic View Post
1) Yes, I unbolted the caliper and opened the bleeder bolt and attempted to compress with a c clamp.
2) Not completely no.
3) With a c clamp
If you cannot get the piston in with a C clamp with the bleeder even open, something is seized up pretty bad. Your piston seal may have rolled over or you may just have some bad corrosion in there. I would advise to pull the calipers and rebuild them. If the pistons have ANY corrosion on them at all, get some new SS ones.
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Old Thu, Oct-28-2010, 03:52:38 AM   #24
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Originally Posted by WRXEATR View Post
If you cannot get the piston in with a C clamp with the bleeder even open, something is seized up pretty bad. Your piston seal may have rolled over or you may just have some bad corrosion in there. I would advise to pull the calipers and rebuild them. If the pistons have ANY corrosion on them at all, get some new SS ones.
Agree with this and I'm betting it's heavily rusted given the location.

Who is supplying replacement pistons other than BMW currently?
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Old Thu, Oct-28-2010, 03:57:25 AM   #25
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Agree with this and I'm betting it's heavily rusted given the location.

Who is supplying replacement pistons other than BMW currently?
For the stainless, they are made by a company I believe that goes by the name of Stomskie Racing

http://store.bimmerworld.com/stainle...tons-p755.aspx

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Originally Posted by Braymond141 View Post

Who is supplying replacement pistons other than BMW currently?
....and how do I get my hands on some of these BMW supplied pistons?

I wasn't aware they were available

Last edited by WRXEATR; Thu, Oct-28-2010 at 04:21:56 AM.
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Discussing seized caliper or clogged brake line? 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)