 Mystery Calipers, "M" strut mounts |
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| 914Sixer |
 Oct 7 2006, 09:14 PM
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#1
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914 Guru  Group: Members Posts: 9,005 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region 
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I have been working with Eric Shea to try and guess where thes calipers came from. I got them in a parts car. The guy said he took them off of a 911 with "M" struts. I bolted the calipers up with no problems and they clear my 8" Fuchs. I have included some pictures with compairsion. The caliper pistons are hollow. Eric says BMW or MB.
I measured the openings on the caliper for compairison: Mystery Caliper "M" Caliper 58 mm 54mm Width 77mm 62mm Length 25mm 24mm Rotor opening Attached image(s)    
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| 914Sixer |
Oct 7 2006, 09:16 PM
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#2
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914 Guru Group: Members Posts: 9,005 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region
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Additional pictures:
Attached image(s)   
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| Aaron Cox |
Oct 7 2006, 09:27 PM
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#3
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
the one with the banjo fitting looks IDENTICAL to my M calipers...
the other one is what i have seen when you order a "new caliper" from flaps... |
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| clarkcou |
Oct 8 2006, 10:33 AM
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#4
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Member Group: Members Posts: 115 Joined: 17-October 03 From: Peoria, Arizona Member No.: 1,257 Region Association: Southwest Region |
ATE is the brand on my old BMW (75 5 series) but these are not BMW calipers from that vintage.
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| Eric_Shea |
Oct 8 2006, 10:43 AM
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#5
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PMB Performance Group: Admin Posts: 19,289 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains  |
With the input "peak" and the mount to one side... I'm going to fall back on my Mercedes/BMW caliper. These are virtually identical to A-Calipers with the following exceptions:
A-Calipers are (obviously) on a 3.5" spacing A-Calipers have the input at the bottom of the peak. The larger Mercedes sedans went vented and I believe they remained on 3" spacing. I have done a set of Mercedes calipers that were "very" similar to these. I need to check the mounting spacing. BMW's could have been the same way but I don't know enough about the mark to give an opinion. It would be great to know what they are. |
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| Aaron Cox |
Oct 8 2006, 11:01 AM
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#6
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
i tjink slits can run the ATE PN
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| Eric_Shea |
Oct 8 2006, 11:57 AM
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#7
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PMB Performance Group: Admin Posts: 19,289 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
Look familiar?
Attached image(s) 
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| Eric_Shea |
Oct 8 2006, 11:59 AM
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#8
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PMB Performance Group: Admin Posts: 19,289 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
That is a BMW caliper. Same exact caliper w/o the spacer. I would imagine a later model BMW would retain the caliper but add spacers and a vented rotor.
Here's an A-Caliper... note the input peak is flattened and the input is on the bottom. Attached image(s) 
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| Eric_Shea |
Oct 8 2006, 12:02 PM
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#9
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PMB Performance Group: Admin Posts: 19,289 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
M-Caliper for comparison.
All these calipers have the same piston in them. Later model calipers have a hollowed out piston (better for cooling). The BMW and A-calipers have a larger pad size. Attached image(s) 
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| 914werke |
Oct 8 2006, 06:40 PM
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#10
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"I got blisters on me fingers" Group: Members Posts: 10,801 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest
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QUOTE(Aaron Cox @ Oct 7 2006, 08:27 PM)  the one with the banjo fitting looks IDENTICAL to my M calipers... the other one is what i have seen when you order a "new caliper" from flaps... You can buy new/rebuilt "M" calipers from flaps? |
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