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      03-20-2012, 07:44 AM   #1
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Cheapo BBK....

Yes i'm trying to build one....porsche 996 calipers ordered off ebay Used m3 rotor sourced for mock up build. Pics and updates to come in this thread for anybody interested.
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      03-20-2012, 09:06 AM   #2
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      03-20-2012, 09:37 AM   #3
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This is the approach BMW tech Rich at AtSpeed recommended to me.
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      03-20-2012, 09:54 AM   #4
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FYI Porsche 996 Caliper dimensions are 150mm (5 7/8") wide at the widest point and 240mm (9 1/2) in overall length.

Took quite a bit of googling to find that...hopefully its accurate and helps anybody else looking for the info.
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      03-20-2012, 09:57 AM   #5
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Chris, how does are calipers dimensions compare to the porsches?
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      03-20-2012, 10:04 AM   #6
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Still looking that up haha.
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      03-20-2012, 10:15 AM   #7
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did you run the numbers for brake bias with these calipers?
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      03-20-2012, 10:19 AM   #8
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No I did not...to be honest I have no idea on how to calculate that.
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      03-23-2012, 05:25 PM   #9
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Got the calipers today and I'm quite happy with the buy at first inspection I wish the iPad app would let me post pics!!
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      03-23-2012, 05:39 PM   #10
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A small teaser hehe

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      03-23-2012, 06:42 PM   #11
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the bigger pads is what the 135 caliper uses vs the new pad size.

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      03-23-2012, 09:48 PM   #12
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I'm very interested in this.
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      03-24-2012, 11:09 AM   #13
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      03-24-2012, 11:21 AM   #14
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Cool, looking forward to your results
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      03-24-2012, 11:27 AM   #15
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Chris, that looks really small. is it a 4 pot?
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      03-24-2012, 12:02 PM   #16
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Quote:
Originally Posted by pixelblue
Chris, that looks really small. is it a 4 pot?
Kori they aren't small at all. While pad surface area is smaller they have more are for heat dispersion. All steel pistons too.




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      03-24-2012, 01:25 PM   #17
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I don't have anything against 4 pot but was just wondering. so these are 996 front calipers? would the zcp rotors fit inside these calipers?
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      03-24-2012, 02:14 PM   #18
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They are 996 calipers kori. I think right now they'll fit a 32mm rotor and with a bit of filling I've read of people putting 35mm rotors in there.
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      03-24-2012, 03:36 PM   #19
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What diameter are the pistons?
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      03-24-2012, 05:30 PM   #20
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I'll measure after I pick up my micrometer.
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      03-24-2012, 09:05 PM   #21
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If you know the pistons surface area, you can calculate the rotor size that will keep the bias stock.
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      03-26-2012, 12:16 AM   #22
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Quote:
Originally Posted by Focusedintntions View Post
Yes i'm trying to build one....porsche 996 calipers ordered off ebay Used m3 rotor sourced for mock up build. Pics and updates to come in this thread for anybody interested.
Hmm... Taking brakes off of a rear-engined car and attempting for "fit" them on a front-engined car. Please post videos of track testing!
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