Porsche Brembo Calipers and STi Rotors

Suspension and other discussion

Re: Porsche Brembo Calipers and STi Rotors

Postby underscore » Fri Oct 17, 2014 3:51 am

I'd PM gtfourtc, he was the one that made them.
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Re: Porsche Brembo Calipers and STi Rotors

Postby camry90 » Fri Nov 14, 2014 4:26 pm

does your rotor hit rub on the balljoint sometimes?
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Re: Porsche Brembo Calipers and STi Rotors

Postby underscore » Fri Nov 14, 2014 4:47 pm

Yes it does, I've had to grind down the ball joint a bit.
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Re: Porsche Brembo Calipers and STi Rotors

Postby camry90 » Sat Nov 22, 2014 4:08 pm

why didn't you use 350z brembo package rotors? they are 49mm in depth compare to 52mm on the STi
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Re: Porsche Brembo Calipers and STi Rotors

Postby underscore » Sun Nov 23, 2014 1:46 am

I remember looking into those with Tubasteve, other than the bolt pattern being wrong I believe there were other reasons why it wouldn't work.
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Re: Porsche Brembo Calipers and STi Rotors

Postby camry90 » Mon Nov 24, 2014 3:23 am

darn... do you remember why?
i wanna use the 350z brembo brakes
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Re: Porsche Brembo Calipers and STi Rotors

Postby underscore » Mon Nov 24, 2014 10:14 pm

I can't remember off the top of my head but the 350Z rotor has the following specs:
Bore Diameter (mm): 68
Discard Thickness (mm): 28.4
Initial Thickness (mm): 30.0
Outside Diameter (mm): 324
Overall Depth (mm): 49

And the STi:
Bore Diameter (mm): 58.07
Discard Thickness (mm): 22
Initial Thickness (mm): 24
Outside Diameter (mm): 293.2
Overall Depth (mm): 56.64

And for reference, the Celica's:
Bore Diameter (mm): 54.14
Discard Thickness (mm): 23
Initial Thickness (mm): 24.9
Outside Diameter (mm): 276.899999
Overall Depth (mm): 46.15

It looks like the 350Z rotor is too big and too thick, not to mention you'll need to have it drilled to the 5x100 and get some big hubcentric rings. You're also pushing the rotor further out from the hub which means the caliper moves further out, to the point where you have to worry about clearance to the back of your spokes as the STi setup already has it very close.
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Re: Porsche Brembo Calipers and STi Rotors

Postby MWP » Thu Nov 27, 2014 5:01 am

Isnt that the wrong STi rotor size?
Aren't we interested in the larger one:
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The 350Z rotor looks quite good other than the bolt PCD.
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Re: Porsche Brembo Calipers and STi Rotors

Postby DeeCee » Thu Nov 27, 2014 8:15 am

I used the 324-326mm STI rotor for my brake conversion
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Re: Porsche Brembo Calipers and STi Rotors

Postby underscore » Thu Nov 27, 2014 5:01 pm

Looks like you're right, the specs I got were labelled STi but they seem to be wrong.

Either way, you've got to make sure the "height" is enough to fit on our cars (though I doubt it would be a problem) and that the calipers will clear the back of the wheels. I know with my wheels there's no way the calipers would clear without an additional 10mm spacer as well, and then I'd be hitting the fenders with my tires.
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Build thread http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=44216
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Re: Porsche Brembo Calipers and STi Rotors

Postby Akihero » Tue Feb 16, 2016 2:03 pm

does anyone remember if there was a ring needed to make the rotors fit onto the celica i was planning on ordering the calipers and wanted to know what else i need
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Re: Porsche Brembo Calipers and STi Rotors

Postby Awesome-Trac » Wed Feb 17, 2016 6:08 am

Akihero wrote:does anyone remember if there was a ring needed to make the rotors fit onto the celica i was planning on ordering the calipers and wanted to know what else i need


Yes or the rotor won't sit properly on the bore. You can run it without but that will put more stess on the studs kind of like running wheel adapters without the hub centric ring to hold it in place
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