Razorlab - 2020 LE build thread

[Islindur]

I have a caliper coming for a test fit.

Chceck the guy on Ig: 22supramk5 he already did it. I was told even some 18" wheels will fit.
He used part number: 34112450161
I wonder if pad is bigger for better stopping and how it works.

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[razorlab]

Chceck the guy on Ig: 22supramk5 he already did it. I was told even some 18" wheels will fit.
He used part number: 34112450161
I wonder if pad is bigger for better stopping and how it works.

Those are 20” wheels, lol. I know they fit under 19 and larger. I’m test fitting for 18. Pads are same size which is good for pad options. Rotor and caliper are larger for more heat capacity.

 

[Islindur]

Those are 20” wheels, lol. I know they fit under 19 and larger. I’m test fitting for 18. Pads are same size which is good for pad options. Rotor and caliper are larger for more heat capacity.

So no shorter stopping, bit more heat capacity and fade resist. Wonder what this new Supra will come with, 374 or 390. Waiting for Your results dor 18 fitment
6 piston caliper would improve braking distance maybe coz more force so more friction...

 

[razorlab]

So no shorter stopping, bit more heat capacity and fade resist. Wonder what this new Supra will come with, 374 or 390. Waiting for Your results dor 18 fitment
6 piston caliper would improve braking distance maybe coz more force so more friction...

No. Braking distance is more pad compound and tire dependent.

 

[racebuild]

Those are 20” wheels, lol. I know they fit under 19 and larger. I’m test fitting for 18. Pads are same size which is good for pad options. Rotor and caliper are larger for more heat capacity.

18’s will fit, just depends on the wheel design. G20 with the 374mm rotor clears 18” oem wheels, E9x track guys have also been doing this retrofit.

G80 have 380mm brakes and they clear with 18” Apex wheels.

 

[razorlab]

18’s will fit, just depends on the wheel design. G20 with the 374mm rotor clears 18” oem wheels, E9x track guys have also been doing this retrofit.

G80 have 380mm brakes and they clear with 18” Apex wheels.

Do you have experience with this exact setup? If you do, why haven’t you shared the knowledge? I know this fits with oem m340i 18”. That is not what I am after with what I am testing.

Please feel free to do your own testing and let us know. If not, it’s all talk and chest flexing. Which is pretty much all you’ve done.

I am going to give you the benefit of the doubt here and state you should know it’s not the rotor size that dictates the wheel, it’s the caliper shape/size. G80 is a completely different caliper design. Much smaller profile and much larger price.

This is exactly why I haven’t shared much about this yet. The “I’ve done everything but will not share anything” pundits come out of the woodwork.

The ignore list you go…

 

[racebuild]

Do you have experience with this exact setup? I know this fits with oem m340i 18”. That is not what I am after with what I am testing.

Please feel free to do your own testing and let us know. If not, it’s all talk and chest flexing. Which is pretty much all you’ve done.

I am going to give you the benefit of the doubt here and state you should know it’s not the rotor size that dictates the wheel, it’s the caliper shape/size.

What’s the exact setup? What caliper are you planning to test? A90 has the smallest caliper of the 3 variants.

Chest flex? Lol I’m just passing along info. Don’t worry, no one is trying to take your trophy as the forum know it all. Experience with this brake swap on an A90, no. On another chassis, yes.

I’ll leave you with some info that you have been misinformed about regarding pads. The larger calipers uses a taller pad with a wider set retaining pin location. So the pads from the A90 will not fit any of the larger calipers variants.

Aware it’s not the rotor size just giving you an example.

Just saw your edit, not everyone cares to share everything they’ve done on a forum… and a factory brake retrofit isn’t anything to write home about.

 

[Islindur]

What’s the exact setup? What caliper are you planning to test? A90 has the smallest caliper of the 3 variants.

Chest flex? Lol I’m just passing along info. Don’t worry, no one is trying to take your trophy as the forum know it all. Experience with this brake swap on an A90, no. On another chassis, yes.

I’ll leave you with some info that you have been misinformed about regarding pads. The larger calipers uses a taller pad with a wider set retaining pin location. So the pads from the A90 will not fit any of the larger calipers variants.

Aware it’s not the rotor size just giving you an example.

Just saw your edit, not everyone cares to share everything they’ve done on a forum… and a factory brake retrofit isn’t anything to write home about.

So the pad is bigger after all (i assumed so), so maybe bit better braking performance?

 

[FLtrackdays]

So the pad is bigger after all (i assumed so), so maybe bit better braking performance?

Since it is Bryan’s build page, that’s were the focus comes from. We ask about his car and his setup. We’ve (especially me) kinda messed up his thread only because he left for a bit, started random posts, and now he’s back. Testy at times but we still love him ? and appreciate all y’all‘s information, you too @racebuild. Truly helps all of us here. At least you guys do…

In general, I believe from past experience, you buy the best pad you can afford and basic rotor. CSGs should be the top of the line for our car, if you have the coin and that hundredth of a second makes a difference. I’m stoked to try the project mu’s sometime because of all the feedback on this forum. The track kids are usually pretty good about sharing their good & bad.

I have a friend with a bigger brake kit that can run Hawk DTC 70/60 split. More compound to dissipate heat and an improved compound at that (for Hawk). So that might interest me someday. I know @Todday1 does this as well.

Glad you’re back Bryan and giving us access to your build. It’s badass and great seeing the progress!

 

[Islindur]

Since it is Bryan’s build page, that’s were the focus comes from. We ask about his car and his setup. We’ve (especially me) kinda messed up his thread only because he left for a bit, started random posts, and now he’s back. Testy at times but we still love him ? and appreciate all y’all‘s information, you too @racebuild. Truly helps all of us here. At least you guys do…

In general, I believe from past experience, you buy the best pad you can afford and basic rotor. CSGs should be the top of the line for our car, if you have the coin and that hundredth of a second makes a difference. I’m stoked to try the project mu’s sometime because of all the feedback on this forum. The track kids are usually pretty good about sharing their good & bad.

I have a friend with a bigger brake kit that can run Hawk DTC 70/60 split. More compound to dissipate heat and an improved compound at that (for Hawk). So that might interest me someday. I know @Todday1 does this as well.

Glad you’re back Bryan and giving us access to your build. It’s badass and great seeing the progress!

Haha, I sometimes attack him on facebook messenger since I discovered his secret identity on track group on fb ?
Few guys on track run here 380mm slotted GTR discs with 6 pot calipers and steel lines and they all say its big improvement over stock system...

 

[kyle9]

So the pad is bigger after all (i assumed so), so maybe bit better braking performance?

depends on your definition of brake performance. I think that even the oem pads have enough friction to trigger ABS. The problem is that you’ll melt the pads and glaze the rotors real nice in about 3 laps.

There are a lot of options to try (I wouldn’t touch CSG pads ever again btw) - ebc sintered, project mu, endless me20, ferodo ds3.12, circo m119 or m220, race technologies re10, winmax w7, etc

 

[razorlab]

So I did some more digging on the brake pad size for the 374mm rotor calipers. They are indeed a different size and even worse, there is hardly any brake compounds available. Some EBC (yuck) and one Pagid.

So, unfortunately, for my needs, this makes this project dead in the water for me. I'll still measure when I get my caliper in but if I can't get good pads, these are of no use to me.

 

[Jmanlevan]

After 15,000 measurements, five dremel cutting wheels and a garage filled with aluminum dust, the replica GT4 hood vent is now installed!

This looks amazing! How did you decide where exactly to put it since Triple Seven says that placement is variable? Was it more based on where you liked it visually or did you somehow figure out where it would be most effective for heat extraction based on location of engine parts underneath or around the vent?

 

[razorlab]

This looks amazing! How did you decide where exactly to put it since Triple Seven says that placement is variable? Was it more based on where you liked it visually or did you somehow figure out where it would be most effective for heat extraction based on location of engine parts underneath or around the vent?

I tried to place it in the same place as the Supra GT4. It's right between the cooling stack and the front of the engine.

 

[razorlab]

So the 374mm rotor caliper showed up today. As I stated earlier, this project is dead in the water for me because of the lack of brake pad options for both the 374mm rotor caliper and the 395mm rotor caliper (same pad part number) however, here are some measurements and photos...

Perhaps the new top secret Supra model with the 395mm rotor calipers will help expand the brake pad offerings.

348mm rotor caliper (OEM Supra, M240i, M340i, M40i Z4, and some others, considered "M-Sport" brakes)

Brake pad measurements
Actual pad material: 78 tall x 120mm wide
From pad mount pin center to bottom of pad: 85mm
Pad backing plate width: 125mm

374mm rotor caliper (M340i with Motorsport engineering package S33TA, 750i, M-Sport brakes on 840i,740i, 540i, X5, and some of others)

Brake pad measurements
Actual pad material: 94tall x 120mm wide
From pad mount pin center to bottom of pad: 100mm
Pad backing plate width: 125mm

Some photos:

Caliper (these are available in unpainted silver like this example on the non "sporty" models. Available in blue, red and black on the sportier models)

Brake pads:

Stacked on top of each other:

Comparing them on a 348mm rotor (OEM Supra):

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