NQS BBK A Not Quite So Big Brake Kit..NQS Rear mods now.....

[the bruce]

A few posts before yours Dave has written this:

996 Caliper is wider, same piston sizes as the boxster caliper. The disc thickness is also 28mm and there not a suitable disc from VAG that suits.

That said I've used the 996 caliper on the mk4 on another disc (330mm) and also on the 6r polo

[jedi-knight83]

A few posts before yours Dave has written this:

996 Caliper is wider, same piston sizes as the boxster caliper. The disc thickness is also 28mm and there not a suitable disc from VAG that suits.

That said I've used the 996 caliper on the mk4 on another disc (330mm) and also on the 6r polo

AH balls... I read through 28 pages and forgot to read the last one properly! lol

Thanks

[jimk04]

Reason I asked is that I had 996 on my mk2 with Seat 305s but they are indeed 28mm thk.

[DaveB@Vagbremtechnic]

And 4x100


Guys if you have a good old read back to the very begining the whole point of this was 5-7 laps of Oulton park without going off the side, I remember Joe (Joes GTI) getting them hot after a blat locally here in the North West, the caliper was fouling on the disc and making a quite dramatic noise...this was the day before the ring trip and his old 312 OEM's were absolutely shagged to say the least....

Anyway the pad pegs were ground back which solved it easily but the discs were marked...anyway long story short I was apologetic and wanted to get them skimmed thats when i realised it was cheaper to replace them with aftermarket discs than skim them.....thats what this kit is all about.... cheap consumables available within 5 miles of your house on a Saturday morning....

To be honest I've sort of abandoned the 2piece 315mm AP Racing, the discs are not a high volume item and cost the same as the 362x32 fully floating rotors I use on the R8 kit...

For those tracking on a budget I'd purchase a spare set of 312 discs put some money into some track only metallic pads which need a dedicated disc in reality and simply use them for track days and swap them back after I got back before putting my fast road setup back in

Its more of a clubman setup than outright performance masterpiece (Got those they cost £2k!) that said it will hold its own for most of us

[jimk04]

Dave do you do a bracket for 996, or 996tt over merc 330s?

[DaveB@Vagbremtechnic]

Yes I do, thats the one that got copied on ebay, I would have been a little more pi$$ed off about it other than the fact that it worked from an engineering point of view but needed a 14mm spacer over a pescara. Was for a AMG SLK iirc

Same company also copied a bracket I did for a Mk4   

Quality wasn't great either one of the muppets on the Mk4 forum tried sending them to me saying they were mine and didnt fit....one of the most enjoyabe emails Ive ever written was enlightning the guy that they were ebay tat and not mine.

The piston sizes and position are exactly the same on the 996 caliper as they are on the 986...in fact the pad dampeners that insert into the pistons to keep the pads quiet are the same part number on calipers, theres no advantage to go for the bigger caliper on a Mk5 yes on a Mk4, no on a Mk5.

Better prospect would be the 996 Turbo/997S 4 pot onto the 350 Mercedes Disc, I use that disc a lot as it also works well with the Cayenne 6 Pot caliper which now Ive found an uprated master cylinder has a new lease of life with a great pedal now. Ive a carrier for S3 Hubs as well as GTI ones so its a good kit

DomT has that setup on his eddy (was QD's) and Teff is running them on his 550BHP Golf R - very optimal piston sizes for the not great Mk5 MC

[jedi-knight83]

Sorry to be dumb.... but im just thinking about these 996 calipers still and the fact they are wider and 'need' a wider disc.

If you have to trim a bit off the peg on the boxster caliper to fit the slightly wider GTI disc anyway then surely the 996 calipers that are already wider would accommodate the GTI disc no problem...

... or is it that the pads would rattle around a bit because there would be a gap between them and the disc?

Just trying to understand the logics of it all.

[DaveB@Vagbremtechnic]

Its a trade off between max piston travel as well, dont want a piston popping out

If you put the 986 caliper on a 28mm wide disc you wouldnt get the pads in!

You'll also need an extra 5mm spacer with the 996 caliper.

The 986 caliper maxes out at 320mm, the 996 at 330mm disc wise.

The boxster caliper just about ticks every box, using the bigger caliper would be a compromise really

[the bruce]

From theory with the 996 calipers + stock GTI disc you'd have to use
at least some stainless heat shield plates on the pads (2 mm or so)
and take care not to wear the pads full down.

But I wouldn't take any risks in case of brakes. I'd listen to Dave.
Sell the 996 calipers on ebay and get some 986 calipers + brackets
from Dave. Believe me, it's a better feeling to know you have a brake
that's prooved.

[jedi-knight83]

Its a trade off between max piston travel as well, dont want a piston popping out

If you put the 986 caliper on a 28mm wide disc you wouldnt get the pads in!

You'll also need an extra 5mm spacer with the 996 caliper.

The 986 caliper maxes out at 320mm, the 996 at 330mm disc wise.

The boxster caliper just about ticks every box, using the bigger caliper would be a compromise really

Thanks... and 'the bruce'. Im not trying to disprove you or be difficult... i just always like to know why :)

I will keep my eyes open for a good set of boxster calipers I think.

[jimk04]

So Dave you do a mount for a 'big' 997/996T 4 pot on a mk5 (gti and s3 hub) over Merc 350mm or 330mm?

And what 6 pot have you played with - 17z or 18z? and which do you prefer?

I understand they are hydraulically different aswell as physically - 17z being spaced for 330mm, the 18z for 350mm.

I hear some saying they are massive overkill/ruin the brake balance/pedal feel/handling due ti heavy disc....

I would like to 'fill' my wheels with brakes as it looks cool (sorry - childish I know!)m but I dont want to ruin handling and brake balance.

Does the 6 pot mount on the inside of the hub - both gti and ally S3 - so as not to be effected by the thicker ally casting?

Thanks very much

[RENNTAG]

Hi Dave,

Did you get my PM?

Thanks

[Tfsi_Mike]

Can anyone tell me how much a pair of J hooked 312s are please? 

[Tfsi_Mike]

Can anyone tell me how much a pair of J hooked 312s are please? 

 

[rich83]

Can anyone tell me how much a pair of J hooked 312s are please? 

 

I thought all the J hook stuff was done to standard disks... i.e not for sale except from people like dave and others with CNC equipment