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View Full Version : Porsche Brembo Calipers and STi Rotors BBK



90GT2
08-04-2011, 02:39 AM
I figured I would post up some pics of my front big brake upgrade. It is not finished yet because my 16" rims were to small so I just test fit the set up to see what it looked like. Once my rims arrive I will be able to give more detail on how it feels. I had no problems with the bracket, fit perfect and everything bolted up easily. I also checked the ball joint to rotor clearance and it is pretty close but I have not yet actually taken a good measurement because my engine is not in the car right now so the suspension is not fully loaded.

Bought the custom caliper brackets from gtfourtc.
For sale thread http://www.alltrac.net/phpBB2/viewtopic.php?f=15&t=40462&start=0
The project thread http://www.alltrac.net/phpBB2/viewtopic.php?f=8&t=39533

Here are some pics of the parts and mounting

DRT WRX STi Rotors
http://i1199.photobucket.com/albums/aa464/phillipplourde/DSC_0397.jpg
http://i1199.photobucket.com/albums/aa464/phillipplourde/DSC_0399.jpg

Rotors compared to stock
http://i1199.photobucket.com/albums/aa464/phillipplourde/P4090015.jpg
http://i1199.photobucket.com/albums/aa464/phillipplourde/P4090018.jpg

Porsch Brembo Caliper
http://i1199.photobucket.com/albums/aa464/phillipplourde/P4090020.jpg
http://i1199.photobucket.com/albums/aa464/phillipplourde/P4090019.jpg

Pic of mounting the new steel lines. The Porsche caliper had a hardline mounted here so at first I did not think the celica lines would mate up but they did just fine.
http://i1199.photobucket.com/albums/aa464/phillipplourde/P4090022.jpg

Had to switch this line over to the other side so the caliper could be bled properly
http://i1199.photobucket.com/albums/aa464/phillipplourde/P4090023.jpg

New Red Stuff Pads
http://i1199.photobucket.com/albums/aa464/phillipplourde/DSC_0409.jpg

Caliper put together and ready to be mounted
http://i1199.photobucket.com/albums/aa464/phillipplourde/P4090024.jpg

Caliper and Rotor mounted
http://i1199.photobucket.com/albums/aa464/phillipplourde/P4090028.jpg
http://i1199.photobucket.com/albums/aa464/phillipplourde/P4090030.jpg
http://i1199.photobucket.com/albums/aa464/phillipplourde/P4090031.jpg
http://i1199.photobucket.com/albums/aa464/phillipplourde/P4090032.jpg

I had some pics of the rotor thickness compared to stock but I can find it right now, lets just say there is a huge difference.

Here is the cost break down
2 Porsche Calipers $300 shipped (ebay)
2 DRT STi Slotted Rotors $ 200 (got these on ebay, I did a bunch of reading on other forums and apparently this company makes a pretty good product)
4 Steel brake lines $100 (cant remember where I got these)
Set of front Red Stuff Ceramic break pads $100

Total for front BBK = $700 (not bad for a Brembo 4 pot caliper BBK with massive rotors)

As for caliper color we should have a vote!
Should I powder coat them (list your color choice) and then put Brembo on them or should I leave them silver with the Porsche lettering? The car will be painted blue or red (undecided still).

Masani
08-04-2011, 03:30 AM
Ah man, that is too damn cool. Are the caliper covers changeable? Or are you going to rock the Porche insignia? I would :P

grimmythereaper
08-04-2011, 03:45 AM
looks crazy sick man,

prophet513
08-04-2011, 03:54 AM
I've been wanting to know what kind larger rotors I could possible use for my 90 ST. I don't wanna rock tiny brakes under new rims/tires.

90GT2
08-04-2011, 04:10 AM
Ah man, that is too damn cool. Are the caliper covers changeable? Or are you going to rock the Porche insignia? I would

Thanks! Im not sure what you mean by covers though because they are solid one piece calipers (no cover). The calipers come on 2000+ Porsche 911 Carrera's and are made by Brembo. Im not sure what im going to do yet, at first I was thinking of powder coating them gold and then putting Brembo on them, but then I started to think the Porsche looked kinda cool to.

temperacerguy
08-04-2011, 04:33 AM
I have sets of "Brembo" stencils for those calipers. I had about 20 sets made when I had them done for my Evo's Brembos.

temperacerguy
08-04-2011, 05:04 AM
OK, so my vote:

Brembos need to be red or gold man... bead blast them and powdercoat them red or gold (depending on which matches your car color better).
Do your rear calipers at the same time.
If they are Red, then paint the "brembo" in white with brake caliper paint.
If you choose gold, the brembo needs to be red.

grimmythereaper
08-04-2011, 05:19 AM
i vote gold and put "celica" on the caliper :)

Car_Barn_Bandit
08-04-2011, 05:25 AM
The calipers just bolt up? How does this actually connect? Pics of rear side?

Luni
08-04-2011, 07:07 AM
Yeah, how do they just bolt up?

Car_Barn_Bandit
08-04-2011, 07:25 AM
I can imagine a forged and machined caliper bracket that makes this work. What's the secret?

Luni
08-04-2011, 07:36 AM
Oh, durdur. Reading comprehension owns us. He said he bought custom caliper brackets.

You know, Brembos are Brembos. Ill bet money he could have used STI, Evo, G35, 350Z, and other rotors and calipers. I know for Baby Bears STI, his brake pads work with all of the above.

celicaGT90_05
08-04-2011, 08:02 AM
This is pretty cool, but the thing that bothers me is that with the added force to the front you'll still need to adjust your bias now won't you? It would be awesome if there were a way to upgrade the rear sets to help match this set up

temperacerguy
08-04-2011, 08:05 AM
Oh, durdur. Reading comprehension owns us. He said he bought custom caliper brackets.

You know, Brembos are Brembos. Ill bet money he could have used STI, Evo, G35, 350Z, and other rotors and calipers. I know for Baby Bears STI, his brake pads work with all of the above.

Nope, these are radial mount brembos. Evo's/STis and so on are non-radial mount bolt through designs.
http://files.dsm-club.org/swed/dsm_diy/brembo/02.jpg

temperacerguy
08-04-2011, 08:07 AM
This is pretty cool, but the thing that bothers me is that with the added force to the front you'll still need to adjust your bias now won't you? It would be awesome if there were a way to upgrade the rear sets to help match this set up

Well, yes and no..

Typically the stronger the front brakes, the more weight transfer, thus LESS brakes needed in the back. But it's all so dynamic and changing that you'd really notice little difference for most street driving. see how small the pistons are in the rear calipers above.

celicaGT90_05
08-04-2011, 08:42 AM
I know rear brakes don't serve near the purpose as the front, but they are still crucial. My thought would be that extra power is just gonna push toward locking up wheels if you don't have that bias quite right. I'm finding out right now just how important rears can be on my mustang, just converted to rear disc and they aren't 100% just yet, my braking power feels like it crapped out because of this. Same for my celica being converted

On another note as cool as this upgrade is, what if you want to upgrade the fronts but still want smaller wheels, are there other options? I've been searching like crazy for some

temperacerguy
08-04-2011, 09:17 AM
For 99.9% of street drivers, autocrossers, and most "track day" drivers, a simple pad upgrade combined with a good brake fluid and stainless steel brake line will cause the biggest difference in brake performance.

Porterfield R-4S pads are my favorite for street, autocross and light track duty driving. They have low dust, quiet and heat up VERY quickly. Also they are not horribly expensive. For brake fluid, I used to be a Motul dealer, so I still have cases of the 600 and 5.1 I use the 600 on all of my personal vehicles as I change the fluid regularly, and 600 is very hydroscopic. I recommend the 5.1 to nearly everyone else.

KoreanJoey
08-04-2011, 02:05 PM
I'll be honest, I like the Hawk HP+ way more than I did the R4S. I mean, the R4S work fine but they just didn't have that initial bite that the HP+ do. Although, the R4S were quiet. Unlike Hawks, which sound like you're stabbing kittens.

90GT2
08-04-2011, 02:35 PM
The calipers just bolt up? How does this actually connect? Pics of rear side?
These use a custom machined bracket. Here is a pic of the bracket and ill get some side shots later today if I have time. It was made by a member over on alltract.net.
http://imageshack.us/photo/my-images/84/dsc00252hu.jpg/#
http://imageshack.us/photo/my-images/833/dsc00249jg.jpg/#


I have sets of "Brembo" stencils for those calipers. I had about 20 sets made when I had them done for my Evo's Brembos.
temperacerguy do you think I could get a set of those stencils?


It would be awesome if there were a way to upgrade the rear sets to help match this set up
I was thinking of doing the standard st205 rear upgrade later on. I dont know much about adjusting bias to balance my front and back so we will just have to see how they feel when its actually on the road.