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71bmr02

brake calipers

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A recent reference to brake calipers got me to thinking. My 71 has aluminum calipers and I can't seem to find a good reference to calipers on the site, at realoem or penske (like realoem but easier to use). did garden variety 02's come with aluminum calipers? were they only on ti or tii cars? which cars had these al calipers?

Thanks

Gale H

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To my knowledge - none of the 02 series cars (or ANY in the 70s, 80s, 90s) had aluminum calipers. Sounds like you have something non BMW on there. I'd like to see photos of these mysterious things!

Could these be Porsche parts? Any P car experts here?

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early cars (to US VIN 1664761) had two pistons, all later cars had 4 piston calipers, differing only by size (tii and Turbo). How many pistons do your aluminum calipers have? Are they working with stock 02 rotors?

Sounds like a PO did a little switchy-swappee...

mike

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I'll get some pics and a name off the calipers. they sure look stock, four piston and the two hyd lines fit perfectly, working on stock rotors. will also measure the distance between the mounting bolts.

more later

Gale H

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take a wire brush to them to see the base metal -

and a magnet -

from melted U-Boats

CALIPERWEARSPOTS.jpg

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Thanks, rebuilt these about 6 years ago using a rebuild kit for standard bmw 2002 brake parts. think i ordered from rockauto but don't have the invoice. thats when i discovered they were al but just thought they were all made that way. one more reason to believe bmw 's great engineering will always standout. anyway these units are ATE with number 148R on outside half of caliper and 26R on inside. Beleive these are not ATE part numbers. There are some other numbers that are too worn to make out on top of casting. can't find much online even at ATE site.

I'm attaching a couple of pics but they aren't much help.

mounting bolts 3 inchs center to center

Gale H

post-232-13667668888347_thumb.jpg

post-2512-13667668891123_thumb.jpg

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Magnet time-

those aren't aluminum, I think...

t

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i stand corrected and thank you all for your input. they didn't pass the magnet test. man was i sure they were al. several years of use and no rust and i didn't paint them.

thanks again

Gale H

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