The New And Improved Unofficial R65 Forum V2
Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: Justin B. on December 18, 2006, 05:14:40 PM
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One of these days I'm gonna quit buying stuff that is partially in boxes! :-/ NC Steve gave me a heads-up on an entire r/h perch assembly on e-Bay so, since the '82 LS I picked up was missing the MC, I snagged it at a fairly reasonable price. [smiley=thumbsup.gif] This prompted me to develop a "spurt" of motivation so I dug through the box I had sorted all of the brake bits into and started tossing them in the solvent tank. :P The closer I got to the bottom of the box the more nervous I became, as once the box was empty I was short two caliper pistons! >:( Well, the listing said it "looked like" most of it was there... :(
Are the caliper pistons the same as from a single disc Brembo caliper? I think if the ol' lady catches me tearing apart her caliper I would get injured, or worse. [smiley=shoot.gif] Soooo, I guess I'll have to scrounge a pair of pistons, a doner caliper. or convert it to single disc. Anybody got this stuff laying around getting in the way?
Oh, and the "spurt" of motivation has now evaporated... :-?
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CRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAP!!!!!!!!!!! :o
Sometimes it doesn't even make sense to get outa bed... :( I was looking through my latest sack-o-parts from Chicago BMW, and for some reason decided to double-check the caliper rebuild kits and I ORDERED THE WRONG FREAKIN *&%&#@$ ONES!!!! >:( But, I guess if I live long enough I will most likely have to re-build the front Brembos on my '95 RT some day and I will have kits. If they don't dry out in the next 15-20 years... :-/
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[ch9835] "Rainy days and Mondays always gets me down..." [ch9835]
Oh, it's not raining and it's not monday?? Sure feels like it, eh? :'(
Oh yeah, it IS Monday! Not raining here, though.
I'll rummage through the attic and see what we have. I considered adding the second disc to my bike awhile back and had scrounged some extra calipers. They didn't work, of course, and I don't remember if I kept them or not...
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Aaarrrrrrrrrrgggggggggghhhhhhhhhhh! Yes it is Monday Aïda! :'( I know it is.
I'm sure it will all work out Justin. But I know about that evaporating motivation. [smiley=huh.gif]
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Thanks, Aïda. It's a shame, too, as the caliper bores were/are absolutely perfect!
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Justin, is that an ATE caliper you want pistons for? Rob found some at Motobins, if I remember right. My local BMW dealer said NLA, which I have to admit they rarely say. Rob probably even has the part numbers handy, which he posted on one of the previous phorums. :-[
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They only pistons they list for R45/65 are stainless steel which would be over $100 for a pair once shipped. I started thinking today (dangerous, I know) that since I now have a lathe I can make my own. I'll just order me a chunk of stainless stock, slightly oversize, turn it down, and I have some pistons that should never wear out. I do have two stock ones to copy so I don't really have any excuse. Or, I already have some aluminum stock the proper diameter and may just make tham out of that since the stockers appear to be aluminum.
Problem solved...
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OHHH Justin, my favorite list admin.... ;D
If it is ATE pistons you're talking about, how much more trouble would it be to make 4 extra?
Wouldn't alloy work? Or do you think they would just wear out too fast? I don't think the originals are aluminum though, as I'm pretty sure mine had rust through chrome, luckily outside the seal area.
Ed
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Hmmm...
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My original, pitted ones were pretty heavy, so I don't think they were aluminum.
Since you mentioned Brembo (are they ATEs?) I didn't offer my information.
I bought mine last spring, and it seems to me it was around $85 total, w/ shipping, which I considered to be a bargain, when you consider the alternative!
I mentioned it to my machine shop guy that I discovered on the next street over, and he said buying units already made is ALWAYS cheaper than having them made.
Fast delivery, too!
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Rob, I'm pretty sure they are Brembos but I'll double check. Having a machine shop turn these out for you would be rather expensive, I would imagine. But, I might as well put this lathe I bought to use as this was one of the reasons I used to justify it's purchase! ;) I'll have to re-evaulate the material in the pistons, I figured aluminum as they seemed pretty light weight. But, I can always order a chunk of stainless and make 'em out of that...