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How to retro-fit the 312mm front brakes to a Mk7 Golf

tigeo

Go Kart Champion
I hope you remember which pin /slider is top as there are two different pins...on is all metal & the other has a plastic bush at the end...& use TRW grease on the sliders..NOTHING else..
Yes, noted that they were different when I was messing with them. I'll look at the ones I take off and figure it out based on that. I used some Ford brake caliper silicone grease I had on the pins, I'm sure it will be fine.
 

davide.bonetti

Ready to race!
Location
ITALY
while I am retrofitting the whole DCC system, I decided to upgrade the brakes as well, since I hear DCC calling for 312mm rotors from the factory. my calipers are numbered 57.

I bought two BDA1180 at a nice price in Germany. just painted them red and swapped the pins on the "right" one.
I also got Brembo rotors and brake pads.

will install within a few days...
 

golfdave

Drag Racing Champion
Location
Scotland (U.K.)
Ride
MK7 Golf GT Estate
while I am retrofitting the whole DCC system, I decided to upgrade the brakes as well, since I hear DCC calling for 312mm rotors from the factory. my calipers are numbered 57.

I bought two BDA1180 at a nice price in Germany. just painted them red and swapped the pins on the "right" one.
I also got Brembo rotors and brake pads.

will install within a few days...
Done it exactly how it should be for DCC....(y).& made best use of buying 2x of the cheaper carrier side & swapping the pins around...
 

tigeo

Go Kart Champion
Complete. Ordered the Stoptech slotted rotors and EBC Redstuff pad kit from shopdap. $330. Carriers were sourced from a used set of Alltrack calipers I picked up for $120. I replaced the pin bolts. I didn't have a torque wrench that went low enough for the pin bolts so those are "tight enough", carrier bolts are 200nM. Easy job...took about 1.5 hours not hurrying. Will be a few weeks before pads are bedded according to EBCs instructions. Will sell the 288 brakes and make some of my money back.
 

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tigeo

Go Kart Champion
I'm a dumb@ss...forgot to measure my pistons when I had it all apart. My calipers have "57" on them but re-reading this made my paranoid...did the whole 55/57mm issue in the U.S. for the 2017-2018 GSW 4Mo get sorted? I believe if I have interpreted it correctly I have 57s...
 

golfdave

Drag Racing Champion
Location
Scotland (U.K.)
Ride
MK7 Golf GT Estate
I'm a dumb@ss...forgot to measure my pistons when I had it all apart. My calipers have "57" on them but re-reading this made my paranoid...did the whole 55/57mm issue in the U.S. for the 2017-2018 GSW 4Mo get sorted? I believe if I have interpreted it correctly I have 57s...
Still not 100% certain....best to actually see what is written on the calipers...
 

tigeo

Go Kart Champion
Still not 100% certain....best to actually see what is written on the calipers...
Mine say 57 - is that what you are referring to? My concern was it appeared back a few pages that some calipers marked "57" had 55mm pistons...that is what I was asking, has that been sorted or were you referring to the others codes printed the calipers? Really pissed I didn't throw some calipers on my pistons when they were hanging there!
 

tigeo

Go Kart Champion
VCDS says NO..

Nothing written in VCDS..so manually changed the bit from 24 (288mm) to 34 (312mm)...then VCDS threw a stupid "this module appears to be un-initialised" message, used stock importer coding & then it threw it all out saying "out of range".....bugger..

module all ok & back to previous ok...
Me too - won't let me change it using OBDEleven on my 2018 Golf Sportwagen S 4Motion.
 

tigeo

Go Kart Champion
Ok, the carriers I took off that were the ones from the the 288s are marked with the 5QM code and the calipers have "57" on them. I'll just pull them off and measure the GD pistons, it's not hard to do and then can be sure.
 

golfdave

Drag Racing Champion
Location
Scotland (U.K.)
Ride
MK7 Golf GT Estate
Ok - I thought there were folks back a few pages with calipers with 57bthst were 55..am I losing it?
I just re-read a load of it..god its confussing.....

Basically loads of cars with 288mm discs..the VINs were stating 57mm pistons but having 55mm ones...or vice-versa......people getting confused with the PR codes etc...basically if you have looked at the caliper & it states 57 on it you have 57mm pistons..so easy swap from 288mm discs to 312mm discs...
 

tigeo

Go Kart Champion
I just re-read a load of it..god its confussing.....

Basically loads of cars with 288mm discs..the VINs were stating 57mm pistons but having 55mm ones...or vice-versa......people getting confused with the PR codes etc...basically if you have looked at the caliper & it states 57 on it you have 57mm pistons..so easy swap from 288mm discs to 312mm discs...
You are the man golfdave! Thank you - I have done the same...re-reading and it got confusing. Got them all bedded in today. Hit 200 miles and per the pamphlet that came with the EBC Redstuff pads, I did 5 repeats of slowing down from 60 to 20. Got them good and hot...smoking in fact! The braking at thei point can be described as smooth and not as grabby as the 288s/stock pad setup. EBC says the pads won't reach full-potential until 500-1000 miles once the break-in coating is completely gone. Great upgrade!
 

tigeo

Go Kart Champion
Ok. I just popped the caliper off and measured it. I have a 2018 NA Golf Sportwagen S 4Motion (MK7.5). The piston measures 57mm. The caliper has "57" on the casting. The caliper also has a "15". The calipers I bought to get the 312mm carriers were from an Alltrack. The Alltrack calipers have 57mm pistons and say "57" on the casting. These however have the "16" on them. I conclude that the current Golf wagons have 57mm pistons and all say "57" on them which means 57mm pistons. The 15 or 16 on the casting *may* indicate the stock rotor size with 15 = 288 and 16 = 312 and is dependent on the model but doesn't indicate 55mm vs. 57mm pistons.
 
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golfdave

Drag Racing Champion
Location
Scotland (U.K.)
Ride
MK7 Golf GT Estate
Ok. I just popped the caliper off and measured it. I have a 2018 NA Golf Sportwagen S 4Motion (MK7.5). The piston measures 57mm. The caliper has "57" on the casting. The caliper also has a "15". The calipers I bought to get the 312mm carriers were from an Alltrack. The Alltrack calipers have 57mm pistons and say "57" on the casting. These however have the "16" on them. I conclude that the current Golf wagons have 57mm pistons and all say "57" on them which means 57mm pistons. The 15 or 16 on the casting *may* indicate the stock rotor size with 15 = 288 and 16 = 312 and is dependent on the model but doesn't indicate 55mm vs. 57mm pistons.

you are over complicating it...just focus on the 55 or 57 stamped on the caliper…!!

otherwise you'll get really confused as VAG "logic" can go completely out the window sometimes...:ROFLMAO:
 

davide.bonetti

Ready to race!
Location
ITALY
I completed the retrofit, the garage was 10 minutes driving from home, very close. since pads and rotors are new I am braking very softly. anyway it SEEMS like the braking action is more "prompt".

unfortunately I could not retrofit DCC shocks. while at the garage we found out that the DCC shock base will not fit into my wheel bearing housing. I am talking about the front axle. I quickly reached out to PL24 to examine the problem, and DCC equipped cars from factory have a different housing with a larger bearing, 85mm versus 80mm. it also looks like the piece is aluminum versus cast iron.

this really slapped me in the face, if I had known at the beginning I would have not taken the DCC retrofit project. now I have installed everything (5 extra sensors, control module and wiring), only the shocks are missing, so I am inclined to finish it, but at what cost?

wheel housing and bearing are stupid expensive if bought new and, while I can find them at a decent price on the used market, now I am debated because there might be other pieces that need to be swapped, like tracking arm and coupling joints.

F*** :)
 

golfdave

Drag Racing Champion
Location
Scotland (U.K.)
Ride
MK7 Golf GT Estate
I completed the retrofit, the garage was 10 minutes driving from home, very close. since pads and rotors are new I am braking very softly. anyway it SEEMS like the braking action is more "prompt".

unfortunately I could not retrofit DCC shocks. while at the garage we found out that the DCC shock base will not fit into my wheel bearing housing. I am talking about the front axle. I quickly reached out to PL24 to examine the problem, and DCC equipped cars from factory have a different housing with a larger bearing, 85mm versus 80mm. it also looks like the piece is aluminum versus cast iron.

this really slapped me in the face, if I had known at the beginning I would have not taken the DCC retrofit project. now I have installed everything (5 extra sensors, control module and wiring), only the shocks are missing, so I am inclined to finish it, but at what cost?

wheel housing and bearing are stupid expensive if bought new and, while I can find them at a decent price on the used market, now I am debated because there might be other pieces that need to be swapped, like tracking arm and coupling joints.

F*** :)
It has always been known that all AWD/GTI/GTD/R, & DCC cars have aluminum hub carriers for a 55mm damper....everything else gets cast iron for a 50mm damper...& also the bearings are bigger in the aluminium one eg 85mm -vs- 80mm dia for cast iron...

You didn't do your research thoroughly enough...

The Golf Clubsport/Audi TT? 85mm bearing is ever tougher than the Golf 85mm...
 

golfdave

Drag Racing Champion
Location
Scotland (U.K.)
Ride
MK7 Golf GT Estate
I completed the retrofit, the garage was 10 minutes driving from home, very close. since pads and rotors are new I am braking very softly. anyway it SEEMS like the braking action is more "prompt".

unfortunately I could not retrofit DCC shocks. while at the garage we found out that the DCC shock base will not fit into my wheel bearing housing. I am talking about the front axle. I quickly reached out to PL24 to examine the problem, and DCC equipped cars from factory have a different housing with a larger bearing, 85mm versus 80mm. it also looks like the piece is aluminum versus cast iron.

this really slapped me in the face, if I had known at the beginning I would have not taken the DCC retrofit project. now I have installed everything (5 extra sensors, control module and wiring), only the shocks are missing, so I am inclined to finish it, but at what cost?

wheel housing and bearing are stupid expensive if bought new and, while I can find them at a decent price on the used market, now I am debated because there might be other pieces that need to be swapped, like tracking arm and coupling joints.

F*** :)

You didn't read the first post in this actual thread did you??….

""Back Ground Facts:-
Upgrading the brakes on VAG cars using parts from other higher performance VAG cars has been common for years. This 312mm brake set up is used on various other MQB platform VAG cars. On all basic Golf’s (Not GTD/GTI/R, etc) the standard & factory option “sports” dampers are 50mm diameter & fit into a cast iron hub carrier. This is fitted with an 80mm diameter wheel bearing.
The DCC dampers are thicker at 55mm diameter & require the thicker 55mm aluminium/alloy hub carrier. So to fit DCC to a “basic” Golf, VAG decided against making a 55mm cast iron hub carrier as they assumed more of the “sporty” cars would be ordered with DCC. So they use the existing aluminium/alloy hub carrier which is standard on the GTD/GTI/R/ & Audi MQB cars. This is made for all 55mm dampers (DCC & non-DCC) & has a 85mm wheel bearing to cope with more torque etc.""
 

tigeo

Go Kart Champion
VCDS says NO..

Nothing written in VCDS..so manually changed the bit from 24 (288mm) to 34 (312mm)...then VCDS threw a stupid "this module appears to be un-initialised" message, used stock importer coding & then it threw it all out saying "out of range".....bugger..

module all ok & back to previous ok...
I note that they say byte 17 is a mirror of byte 4 - do you think that's the issue? Like you have to do 17 first then 4?
 

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