345mm 2 piece discs

[cuprak1]

if the diagram isnt good enough they will need a 345mm disc to do their cast off.

anybody have a spare

i have 2 spares yes but they would need to collect it or something like that

[DaveB@Vagbremtechnic]

Simon

Got loads of spare R32 discs - if they need one let me know I've dealt with BG before - they make all the bells for AP kits.

Cant help but think that you're putting the cart before the horse perhaps, If I was wanting to improve the installation how about maybe upgrading the calipers first. The R32 setup is great for road use but I cant help thinking maybe a caliper upgrade would be a better avenue, the weight saving would be comparable if not more so as despite the fact that the piston housing is ali on the R32 you're still lugging about a fairly sizeable cast iron carrier and the other part of the caliper. After all if you take the red or blue paint away it is after all a vauxhall vectra esque single piston ATE slide pin and bush brake caliper albeit very capable in road guise.

I would consider spending the money for now on some 1/2 decent 6 pots such as the AP5260 or perhaps better suited to the Mk5 would be the 4 pot 5040's.

Whilst I understand you'll need pads/carriers on top of that - you will have a massive choice of friction material available, you could then runout your existing discs - sell your R32 stuff on ebay and when it comes to disc change time look at either some pukka 356's and stagger the cost by shimming out (you cant shim in!) your carriers to your new discs

Ive got some new 5040's at home (no good for these cos they take 28mm discs) and to say they are light is an understatement - less than 2.5kg in nearly all cases.

You'll save just as much weight and have a quality set of calipers - not very blingy but top quality.

The calipers have a tangible value so if you did want to retun the car to standard you could do fairly easily - what are second hand discs worth??

One other option is to machine down some 350x32 ECS 2 piece discs to 345x32 they woudl also work - not sure on quality though

[Janner_Sy]

a BBK would have been my first choice but ive taken a £670 pound a month pay cut by moving back to UK so i dont have the extra cash id like to.

ontop of that ive just bought a set of R32 stoppers for a bargain price, which i think will give me good enough stopping power with some ferrodo DS2500 pads, but not the cooling i could expect with a BBK. hence why two piece discs will be a viable option for me.

in comparison whilst getting better calipers will be good, it'll undoubtably be more expensive especially with carriers being needed.

keeping the std caliper and disc size means if im low on cash i could always stump back to OEM, then change back @a later date.

reference the cast iron carrier, it could be an option to get one made of a lighter material?

[tony_danza]

I'm with Dave,

I'd get some decent calipers, some good hi-temp pads and combine with R32 discs. You won't warp a disc with heat, you will however splatter resin all over one and get judder from getting too hot/having the wrong pads... heat can also melt CV boots and the like, so open up the splash guard and run some removable ducting in there via the wishbone for track days.

You're still going to replace worn rotors at the same rate as OEM discs with a naughty track pad, and the former is far more expensive. Make your consumables the cheapest bit - calipers you'd sell on again for probably what you'd paid (second hand)

HTH.

[Janner_Sy]

the R32 caliper gives good stopping power though. surely if you remove the likely hood of fade with good brake fluid and good pads. then i think they will do the job i need. I dont have the money at the moment to do the amount of track days i used to.

the other reason im interested in doing the discs first is that at a later date when i have the money i could change to a 4 pot caliper like the R8 and ill already have the 2 piece discs. so ll have a mini BBK.

dont forget im not putting out the massive Hp some of you guys are.(and the discs I have for the R32 are also second hand so wuill need replacing soon anyway)

[tony_danza]

It's a very tough call if you can only do one.

On the one hand you've got lovely 2 piece discs, but you're eating into £400 with every mile you do on the road where they're of no real benefit. You could run R32 OEMs for daily use though and save the 2 piecers for Sunday best??

On the other hand you could have super nice calipers, but a weak link when you go on track with lots of work to try keeping the discs cool. I don't know about the differences in clamping forces between 1/4/6 pots etc, maybe Dave could chime in for that?

Lots of cars use a 4/6 pot on a solid disc, never the other way around. There must be a reason why, never really thought that till now...hmm?

[Janner_Sy]

It's a very tough call if you can only do one.

On the one hand you've got lovely 2 piece discs, but you're eating into £400 with every mile you do on the road where they're of no real benefit. You could run R32 OEMs for daily use though and save the 2 piecers for Sunday best??

On the other hand you could have super nice calipers, but a weak link when you go on track with lots of work to try keeping the discs cool. I don't know about the differences in clamping forces between 1/4/6 pots etc, maybe Dave could chime in for that?

Lots of cars use a 4/6 pot on a solid disc, never the other way around. There must be a reason why, never really thought that till now...hmm?

put that way i see what you mean. Either way ill end with 4 pots and two piece discs eventually. Stopping power on my 312s at the ring i thought was ok, but the heat they held and the fade i experienced has led me to want better resistance to fade and better dissipation of heat. So two piece discs and DS2500s i think might fullfil my needs. keeping Oem for road use and two piece for tracks like you say though could have its advantages though.

Vag changed from brembos on the mk4 platform to this single pot system so this single pot must be up there, maybe trading a bit of pedal feel possibly.

whats the going rate fora set of new R32 discs. I bet thats not far off that anyway is it.

[DaveB@Vagbremtechnic]

Hi Simon

Having read through the last couple posts I can certainly see where you are coming from, I think Mike hit it on the head when he said that you need to keep the consumables as cheap as poss...........Until such times as you want to commit to a full on BBK.........I've been researching Full on BBKs for the Mk5 platform for a couple of days or so and too be honest theres very little change out of £2k.

I really cant see any change out of £600 with carriage etc for the two piece discs.

The other problem is that its very difficult to get 30mm wide discs, do we know for certain that you could put new pads into the calipers with new 32mm discs.......

If I was you I'd spend my money elsewhere, met up with Benjamina from Shark Performance on the M1 in the week, hes running AMG Merc discs which although single piece are a very handy 350x32 and he's running Porsche 996TT fronts with some custom carriers I did for him, he was the scurge of the £2k club when he ended up outbraking nearly everybody else at a recent Briskode organised trackday.

Watch the vid and be ready to pause it when the 996TT's show

 

Nothing special just some capable calipers .

You could get something reasonable together on a budget.

Porsche TT Calipers 350 with pads/shims/springs from the bay - if you send them to me I'll service them for free for you
merc Discs 80
Carriers 150
Lines 50

Pagid OEM pads would be £50 if the caliper originals were tired, if you did go down the Porsche Route there would be upwards of 30 different track pads to choose from, with a bit of ducting you wouldn't be able to get them hot enough matey   

[Hedge]

I know Ben. I was on his stand at Audi Driver. 

I am pretty sure he is running spacers on the front to clear the caliper. Not a problem I guess just something to bear in mind.

I also seem to remember him doing something with R8 rears. 

[QD MBE]

You could get something reasonable together on a budget.

Porsche TT Calipers 350 with pads/shims/springs from the bay - if you send them to me I'll service them for free for you
merc Discs 80
Carriers 150
Lines 50

TT calipers?
 

[Janner_Sy]

Hi Simon

I've been researching Full on BBKs for the Mk5 platform for a couple of days or so and too be honest theres very little change out of £2k.

I really cant see any change out of £600 with carriage etc for the two piece discs.
If I was you I'd spend my money elsewhere, met up with Benjamina from Shark Performance on the M1 in the week, hes running AMG Merc discs which although single piece are a very handy 350x32 and he's running Porsche 996TT fronts with some custom carriers I did for him, he was the scurge of the £2k club when he ended up outbraking nearly everybody else at a recent Briskode organised trackday.
Nothing special just some capable calipers .
You could get something reasonable together on a budget.
Porsche TT Calipers 350 with pads/shims/springs from the bay - if you send them to me I'll service them for free for you
merc Discs 80
Carriers 150
Lines 50
Pagid OEM pads would be £50 if the caliper originals were tired, if you did go down the Porsche Route there would be upwards of 30 different track pads to choose from, with a bit of ducting you wouldn't be able to get them hot enough matey  

yeah i havent seen bens brakes in person but have seen plenty of pics on them. iirc hes also running R32 rears.

like the idea of that TBH but I have the R32 setup already. discs are second hand and will need replacing prob in the next few thousand miles. as much as id like to I cant afford to go the caliper route just yet. so it leaves me with the option of buying a new set of oem R32 discs or getting some uprated ones. doing it this way means i can just uprate the calipers @ a later date if i feel the need.

the guy i spoke to earlier reckons 80 pound for the bell which is a one of buy, and about 200 for the discs. not including discount if we can get a few people.

im pretty much set on the idea now it'll be a good stop gap for me. I'l  prob only manage about 1 or 2 tack days in the next year maximum as im mega busy.

[Top Cat]

[

TT calipers?   

Yep very helpful but there a fooooooker to get on with.       Runs and hides. 

[SteveP]

 

[KennyL]

Hi Simon

I brought mine from BG developments as mentioned earlier and was really happy with the service they were able to provide and the quality of the product.

They made the bells and matched with a AP rotor to work as a replacement for the Brembo items that had cracked as I wanted to stay with the Brembo four pot caliper.
I chose full floating because I have had so many problems with heat that I was doing as much as possible to disperse/manage heat but they are very noisy.

The amount of heat these discs are able to contend with is incredible compared to what I had before, for example the discs on one occasion (track day at brands hatch) were glowing red according to somebody watching and the calipers that were once bright red are now black ! But are still in good shape. As posted earlier most of this heat is due to the stability control.

I paid £80.70 each for the mounting Bells , £185.10 each for the slotted AP rotors CP3580 330mm x 28mm, and £50.75 for the full floating bobbin kit. Total £316.60 per side Plus VAT

[DaveB@Vagbremtechnic]

Simon I was just about to confirm whether you were aware the AP prices are per side plus VAT and carriage = nearly £700