2013 gt500 6 piston brembos

[JAJ]

Interesting...

So, now that I think about it there are four parts to the rear brakes - rotor, caliper, caliper bracket and the anchor plate. The anchor plate and rotor are definitely different, the caliper (parking and service brake hydraulic assembly) is probably the same and the caliper bracket (that holds the caliper in place) was probably redesigned for the 2010 model year to provide more clearance for the rear rotor. That tidy little theory (who knows if it's correct) would explain the differing results.

What I'm really interested in is the brake balance issue - the 2013/14 rears should have more torque by about 20% than the 2011/12 GT500 rear brakes, and that should give rise to an imbalance on any car that's not a GT500. The 2013/4 GT500 fronts actually have only slightly more torque than the 2011/12 GT/GT500 14" Brembo's. The pad reaches down a long way and the piston areas are about the same, so the increase in torque is only about 6%, not 20% like the rears. I assumed that Ford fixed the front-rear balance by changing the master cylinder on the GT500, but I have no way to verify that.

As for the GT500 anchor plate assembly, I'll take a look at it on the weekend if nobody comes up with another picture first. I'm traveling, or I'd throw the car on the lift and look tonight.

 

[Cobra Drifter]

Had to work late tonight so I'll try to get numbers off my 09 GT500 rear calipers tomorrow.

I was going to get the anchor plates and brackets and just reuse my rear calipers with new rotors.

I would really like to find out if I can reuse my rear calipers but seems might be better for me to buy 13 rears anyways so I can have custom powdercoated or paint colored with little to no down time. I can sell my rears after to recoupe costs

 

[Rehagen Racing]

This is definitely confusing as the calipers we had from our 2012 car would not work with the GT500 rotor. All the calipers use the same pad style on the models from 05-14 (Brembo or Non).

Well, this was bothering me so I spent some time this morning researching this further. We have access to the full Ford parts fiche system.

I looked up every year from 05-14. While they do have several part #'s, that all seem to supersede to something else, they eventually all end up at the same base caliper part #. It is the same caliper that is used on the 13+ GT500. The only apparent difference in all of these is the factory selected compound for the brake pads.

This confirms that the 13+ caliper retrofits to all models 05-14. Oddly enough some of the supersessions go all the way to the DR3Z caliper of the 2013, but some stop at the CR3Z on one side(LH or RH). This is really just a lack of update on Ford's side as those calipers still supersede to the DR3Z.

The question I have for our group is what caliper were we using that would not fit the new rotor. It clearly did not line up. I'll do some more research and see what I can find. I suspect that the calipers may either not be 100% off the shelf, or that whomever attempted to install the kit did not switch out the PFC bracket for the new Ford bracket. There is potential that the original brackets we received may have been incorrect as well.

Sorry for the confusion. But on the upside, it looks like this will be even easier to upgrade that originally thought.

edit:
It's conceivable that the early calipers w/ bracket may not fit the later model cars but the late model caliper w/ bracket may fit the older cars. Meaning the newer parts were cast with more room for a larger rotor, so they would supersede all the older calipers.

 

[Rehagen Racing]

Did some more research today. As expected the 2013 caliper supersedes because it does have a larger radius and will clear any model mustang stock rear rotor from 05-14.

Now, supposedly the 11+ GT rear caliper "won't" clear. When I presented the info from Terry and his team, the response was "Ok, then I guess they got lucky". Meaning, it was believed that they would not clear by Ford. Judging by what Terry and his guys have shown us, I believe it's a safe bet that the 11+ GT rear caliper will clear these without issue. With that being said, I would always verify when installing so they don't become "self-clearancing".

Back to why ours did not fit. We have a TON of 05 rear calipers. This is what we have used and never had issue, so that is what was on the car when we attempted the swap. No one at the time knew the 11+ caliper had a different sweep to it, so they were never tested on our end. When we spoke with Ford engineering, they said we HAD to use the 13+ GT500 caliper. At the time, nothing had been superseded.

Short Version:
05 (5R3Z) will not fit. 11+ calipers (AR3Z/CR3Z) were not believed to fit (by Ford), but proven they will in fact by Terry/Vorshlag. 13+ GT500 rear calipers have superseded all older calipers and will fit any model 05-14.

 

[Shotokan1509]

Short Version:
05 (5R3Z) will not fit. 11+ calipers (AR3Z/CR3Z) were not believed to fit (by Ford), but proven they will in fact by Terry/Vorshlag. 13+ GT500 rear calipers have superseded all older calipers and will fit any model 05-14.

My head is spinning, hahah glad someone straightened it out.. now too bad, I was hoping I could forego the calipers

 

[steveespo]

Now for the next puzzling question. Ford Racing says the 302R 18x9.5, 18x10, and 18x10.5 BBS wheels will fit over the '13 GT500 Brembo calipers. I tried the 18x10 version and didn't get it on. I was rushed since my friend had to get ready for his session so I don't know if I didn't have it lined up perfectly. Has anyone found an 18" wheel that positively fits with these calipers.
Thanks
Steve

 

[Paul.]

This is great info. Now when I install my kit I won't bother disconnecting the rear calipers so I won't have to bleed them. I'll just leave my brand new calipers/anchors in the box for now and use the old ones with the new rotors and axle brackets.

Paul.

 

[Rehagen Racing]

Now for the next puzzling question. Ford Racing says the 302R 18x9.5, 18x10, and 18x10.5 BBS wheels will fit over the '13 GT500 Brembo calipers. I tried the 18x10 version and didn't get it on. I was rushed since my friend had to get ready for his session so I don't know if I didn't have it lined up perfectly. Has anyone found an 18" wheel that positively fits with these calipers.
Thanks
Steve

We took a set of our 18x10 BBS wheels off our Grand-Am car and bolted them right onto a customers bone stock 2013 GT500 Track pack. They will in fact fit, but you have only a few thousands clearance between the wheel and the caliper.

You will need to look at the placement of the wheel weights, and make sure there is nothing stuck to the inside of the wheel (gravel, tar, etc). Oh, and try to avoid the gravel trap.

We also have these brakes on one of the owners street driven cars. We test fitted a few of the wheels we stock to make sure they clear. So far the only 18" wheels we have from Ford that will fit are the BBS.

 

[steveespo]

We took a set of our 18x10 BBS wheels off our Grand-Am car and bolted them right onto a customers bone stock 2013 GT500 Track pack. They will in fact fit, but you have only a few thousands clearance between the wheel and the caliper.

You will need to look at the placement of the wheel weights, and make sure there is nothing stuck to the inside of the wheel (gravel, tar, etc). Oh, and try to avoid the gravel trap.

We also have these brakes on one of the owners street driven cars. We test fitted a few of the wheels we stock to make sure they clear. So far the only 18" wheels we have from Ford that will fit are the BBS.

Thanks that is the answer I was looking for. Do you have any used wheels for sale? $600 a pop is very expensive.
Steve

 

[neema]

Thanks that is the answer I was looking for. Do you have any used wheels for sale? $600 a pop is very expensive.
Steve

Did anyone confirm that they do/don't fit on forgestar f14s or enkei pf01s? Those are both the lightweight flow formed kings.

 

[Rehagen Racing]

I don't have anything for used BBS wheels right now. We get asked all the time, but we don't often have many. Typically if we have to replace it, it's not worth reusing.

We haven't tried anything by FRPP and stock Mustang wheels so far. We have some MOMO, and American Muscle wheels that we may try if we get a chance.

 

[u00mem9]

Did anyone confirm that they do/don't fit on forgestar f14s or enkei pf01s? Those are both the lightweight flow formed kings.

Yes I have the same question on the pf01. I have read they don't clear, but there are numerous widths and offsets being used, and I'd like to know exactly what was tried, and exactly where there was contact. Spoke? Barrel?

 

[Napoleon85]

We haven't tried anything by FRPP and stock Mustang wheels so far. We have some MOMO, and American Muscle wheels that we may try if we get a chance.

This is slightly off topic (if you feel it's too far PM me), but how do you feel about the American Muscle wheels for use on a road course. Obviously we're talking entry level here, not coil-overs and hoosiers or anything. I just can't find much information about the wheels construction/material/origin, and I'm concerned about how strong they are. Then again, the last time I looked at a set of FRPP wheels they were stamped "China" so I'm probably worrying about nothing?

 

[csamsh]

This is slightly off topic (if you feel it's too far PM me), but how do you feel about the American Muscle wheels for use on a road course. Obviously we're talking entry level here, not coil-overs and hoosiers or anything. I just can't find much information about the wheels construction/material/origin, and I'm concerned about how strong they are. Then again, the last time I looked at a set of FRPP wheels they were stamped "China" so I'm probably worrying about nothing?

Given how heavy lots of the AM wheels are, I wouldn't think they're anything more than plain old castings, same with lots of Ford Racing wheels. I don't know what (if any) certifications the AM wheels have (usually molded on the inside of one of the spokes) But I would be amazed if the OEM (Ford) would sell non-certified stuff. Even Forgestar's "blanks" come from China...so that's probably not an awesome indicator.

 

[Napoleon85]

Given how heavy lots of the AM wheels are, I wouldn't think they're anything more than plain old castings, same with lots of Ford Racing wheels. I don't know what (if any) certifications the AM wheels have (usually molded on the inside of one of the spokes) But I would be amazed if the OEM (Ford) would sell non-certified stuff. Even Forgestar's "blanks" come from China...so that's probably not an awesome indicator.

I don't really know what to look for, but I'm going to have my wheels off soon and I will look around and take some pictures of any/all markings. I have the 18x9 GT4 clone wheels and while I wouldn't call them light, they weigh a LOT LESS than my OEM 19x8.5 weighed.

edit: am site says 23.2lbs, forgestar F14 18x9 are 21.4lbs. Not hateful seeing as I got mine for $99 each

 

[Rehagen Racing]

I don't really know what to look for, but I'm going to have my wheels off soon and I will look around and take some pictures of any/all markings. I have the 18x9 GT4 clone wheels and while I wouldn't call them light, they weigh a LOT LESS than my OEM 19x8.5 weighed.

edit: am site says 23.2lbs, forgestar F14 18x9 are 21.4lbs. Not hateful seeing as I got mine for $99 each

We like them. That is our rain tire wheel. The GT4 is light enough, and we've never broken one.

Plus they are cheap. We sell them mounted to scrubs quite often.

No idea if they'll clear the 15" brembo's though

 

[Vorshlag-Fair]

Wow, this has turned into a real treasure hunt! Good data from Rehagen... looks like everyone's parts rummaging has outsmarted the Ford parts guys? Makes sense that the casting numbers could be the same (old vs new) while the machined area around the rotor could be different. So the moral of the story is: Original '05-09 calipers probably won't not fit, but the '11-up GT rear calipers should fit, with the 14" rear rotor/bracket. The later calipers will retrofit to early cars, and these have superceeded the old calipers, however. But always check for clearance. Good stuff.

Now, what about 18" wheels that fit the GT500 front 15" brakes??? While we haven't touched a '14 GT500 yet (I have a friend with one on order) last week we we're doing a big brake swap on another car of mine (LS1 BMW E46) where we mocked up a similar 15" front rotor and 6 piston Brembo caliper (not the GT500 bits, but close). We test fit a D-Force 18x10" wheel over the whole thing and it just barely cleared. These D-Force wheels have a very big barrel and clear the 14" Brembos by a mile (both at the barrel and at the back of the spokes).

If anyone in north Dallas has an S197 with the GT500 15" front brakes, give us a call and we will set up a time for you to stop by our shop. We'd love to test fit these D-Force 18x10" wheels as well as some of our 18x11/12" Forgestar wheels over these brakes. Would be nice to know.

We have a customer that wants the GT500 front brake stuff, so if nobody calls us first we should know soon enough. I'll share it here when we know.

Cheers,

 

[steveespo]

Enkei PF 01s definitely do not fit, the barrel hits. Same goes for American Muscle AMR and SVE Drift wheels both make barrel contact.
19" Ford 302S wheels fit with room to spare and that is what I'm running. Issue is the supply of 19" slick is limited while 18" come in many makes and sizes.
As far as the D Force wheels the clearance issue isn't the center of the caliper but rather the "ears" at the top and bottom, and the interference isn't huge but it is a definite no go.
Steve

 

[steveespo]

I don't have anything for used BBS wheels right now. We get asked all the time, but we don't often have many. Typically if we have to replace it, it's not worth reusing.

We haven't tried anything by FRPP and stock Mustang wheels so far. We have some MOMO, and American Muscle wheels that we may try if we get a chance.

I understand, they're not cheap enough to be throwaway items for you either.
Steve

 

[u00mem9]

This guy is using a 1/8" spacer with pf01...I may have to consider that.
http://www.svtperformance.com/forum...d-20-lbs-road-racing-wheels-fit-13-gt500.html