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Consolidated Macan Brembo upgrade thread (READ FIRST POST)

GTIfan99

Autocross Champion
Location
FL

pseudorealityx

Ready to race!
Location
Decatur, GA
Car(s)
2017 GTI SE
Also.... given the thickness of the these shims, I don't know if the difference in thermal conductivity between titanium and stainless is actually significant. The main factor is going to be the contact resistance of adding another layer between pad and piston. Stainless would be much cheaper and get you 95% of the performance. Seems like something we could do a little group order if desired. Any waterjet or laser cutter could knock these out when we're talking less than 1mm stainless. Thoughts?
 

EpicTech

Go Kart Newbie
Location
Houston

jmblur

Go Kart Champion
Location
Massachusetts
Car(s)
2017 Golf R
Also.... given the thickness of the these shims, I don't know if the difference in thermal conductivity between titanium and stainless is actually significant. The main factor is going to be the contact resistance of adding another layer between pad and piston. Stainless would be much cheaper and get you 95% of the performance. Seems like something we could do a little group order if desired. Any waterjet or laser cutter could knock these out when we're talking less than 1mm stainless. Thoughts?
Stainless steel is about 14.5 W/mK. 6/4 Ti is 7.2. (for comparison, carbon steel is ~30-60W/mK, aluminum alloys are around 200) Selection of anti-squeal grease will also have some effect here. I haven't done out a full thermal resistance model to actually calculate Q̇ , but the plate itself will be twice as effective with Ti.
 

pseudorealityx

Ready to race!
Location
Decatur, GA
Car(s)
2017 GTI SE
Stainless steel is about 14.5 W/mK. 6/4 Ti is 7.2. (for comparison, carbon steel is ~30-60W/mK, aluminum alloys are around 200) Selection of anti-squeal grease will also have some effect here. I haven't done out a full thermal resistance model to actually calculate Q̇ , but the plate itself will be twice as effective with Ti.
Sure, but at .030 thickness... what's that actually mean? The bigger thermal resistance is from the contact from pad to shim, and then shim to piston. And yeah, whatever component the grease or lube or whatever provides. It's like a wetsuit or base layer outside clothing.
 

mk7_drew

Passed Driver's Ed
Location
Queens, NY
Someone with a GTI with stock Austins please hurry up and test them 😂

I just ordered a pair of these calipers, running 10mm spacers in the front, I hope this will clear!
 

toothofwar

Go Kart Champion
Location
KY
Car(s)
2018 Golf R
I had Austin's on my 2015 gti when I did my b9 a4 caliper swap. Grant you they are not quite the same as the macan, the dimensions are similar. I had to run a 15mm spacers and only had minimal clearance. I would think that a 10mm would be just shy of working.
 

EpicTech

Go Kart Newbie
Location
Houston
Thought I would share this as it may help others. Wheels are 18x8 ET44 with a 10mm spacer.
IMG-2251.jpg
 

mfmarti3

New member
Location
Spain
Car(s)
Octavia RS 2.0 TSI
these Macan calipers fit into MQB platform? I have a Octavia RS TSI 2.0 5E car and Im looking to upgrade to big calipers, firt idea to use RS3/Seat Cupra brembo calipers+ 370mm rotors, but Macan option is cheaper.

Only to confirm.
 

EpicTech

Go Kart Newbie
Location
Houston
Yes they fit the MQB chassis and are a direct bolt on.
 

GTIfan99

Autocross Champion
Location
FL

pseudorealityx

Ready to race!
Location
Decatur, GA
Car(s)
2017 GTI SE
ohh great! and fit with 370mm rotors? or only works with 340mm - 345mm?
There's not a lot of clearance beyond the 345mm rotors on mine. Assuming your uprights are the same dimensions, you're stuck with a 345mm. You should read at least the 1st page of the thread. Lots of good info.
 
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