The definitive 312mm brakes onto a VR thread

[poll250 0]

Does anyone know the actual length the hose should be?

 

I've had some 312s from a 4mo sitting about for a while now and should really get them on, got the bolts and spacers, and hoses are still connected to the calipers.

 

One other small problem is that the little bleed nipple has snapped off one of the calipers, can I just remove a nipple from the 280 caliper and screw it into my 312 one?

[paul20v 0]

the only problem i had was getting the bolts ,every body had 10.9 but no one had 12.9 but i did eventually find some just got to fit it all know ,

i was told to use late mk3 golf vr6 hoses ,hope they fit :)

 

 

 

what mk4 flexi hoses do i need i notice they use the same calipers as the tt is there and difference on models the book says all mk4 are the same all but the v6 ones ,

so its standard mk4 hoses i need i am looking for confirmation cheers for any help

 

edit

all fitted late mk3 vr6 hoses are perfect exactly the same as the vr ones even down to the gromet to hold it to the shock

and not bedded in but an improvement already first class mod , second best thing i have done , tt wipers being first i feel a the vr turning into a tt slowly as i used tt everything exc the hoses obviously

perish the thought :)

[8vtornado 0]

i fancy having some big brakes, the 312 seems to be the most cost effective thing to do. i cant view the WIKI link on post 1 for some reason. anyway my only prob is i have a g60 (well technically a 20vt ) so could i fit these in the same way but just drill out the discs to 4 stud? if not are the vr6 hubs the same fitment? i.e will the offset in the arch be the same and the driveshaft splines be the same? my biggest prob with changing to vr hubs tho is that iv just spent a long time polishing and painting my 4 stud wheels. :(

 

also yeti do you stil have the bolts and spacers available? thanks

[dinkus 10]

Yeah, sorry the wiki's sort of dead at the moment, but it's at the top of the to-do list.

 

Drilling out the 5-stud disks to 4-stud won't work as there's not really enough meat left on the disk to do it.

 

However, Seat Leon Brembos (which I believe are 305mm) seems to be the most popular route to go... have a search and ye shall find.

[8vtornado 0]

thanks dinkus. i been lookin into them they look sweeeeet. just need a rear ended cupra r now...

[vwgti 0]

Since C&R service is crap where can I buy the Goodrich hoses for this and MKV ally caliper conversion from? Vince of Stealth racing? any help appreciated.

[Storm Warning 0]

Does it matter if the bolts have a shank or not?

 

Also for clarification for all, the wiki states 10.9 rated bolts, but people tend to be opting for 12.9. Is this a belt and braces approach or has there been any issue with 10.9? Likewise for clarification, washers seem to be out of favour for something more substantial for a spacer. Question is, is this over kill?

[lj16v 0]

Hi,

 

done my 312mm conversion, followed all the usefull info on here :salute:

However they've been a slag to bleed and get some decent pedle feel, the pedle feels too long and dosen't inspire the confidence it should (although when ur used to it then its no prob i guess)

i had everything fitted/bled at my local VAG specialist and it still isn't quite right, although is now better that everything is bedding in and has been re-bled.

 

My question; is it a good idea to change the master cylinder to one from a later car (MK4/TT) to improve feel and power, if so what do i need?? Do the the guys on here running big brakes (mr Wire etc) uprate the mastercylinder?

Also do those running big brakes uprate the ABS system/sensors/rings? As i am finding that the ABS kicks in quite a lot now, usually only when i'm driving the knackers off it!!(all my abs sensors on the front are new).

 

one other thing is that last night when we were re-bleeding the whole system, we noticed that the rear pads were a bit low and so i'm going to replace asap, but would low rear pads effect pedle feel much?

 

advice please..... :D

[paul20v 0]

Touch wood ,

i had a great pedal with the conversion right from the word go and after bed in it got better ,

and ive never had the abs kicking in any more than before (are you locking a wheel up ?)

have you tried a pressure bleed thats how i bleed mine .

[lj16v 0]

Thanks^^

Not tried a presure bleed, had it done the old way by my favored garage (they seem v.good, they run their own race car!) pedle feel has got a tad better now after another bleed the other evening, we just wondered if the master cylinder is a bit tired (car's done 175K) so maybe a new/bigger one would help especialy now its pushing bigger pads?

 

It dose seem to get better the more they bed in (although it's been a while now, must be over 1000miles), i think that maybe i was just expecting it to feel more like a modern car, MK4 or TT, where the brakes are a bit sharper and bite further up the pedle stroke.

 

On the abs front, that is not my biggest problem, its only when i'm pushing the car hard and also it could be the damp/slippy conditions at this time of year! i guess that i've been used to the week 280's which just don't really have the power to start locking the wheels when you brake v. hard from SPEED! :cuckoo:

 

Any other's have sudgestions on the pedle length/feel?...... :shrug:

[Storm Warning 0]

I've been supplied a 6 line golf vr6 kit, is this right? I'm told I just use the bolts from the mk4 calipers with these lines? :confused4:

[lj16v 0]

^^^^^Yeah that's what i used.

I've got MK4 rears also so the MK3 VR6 lines don't work with them so kind of a waste, although if you have standard rado rear calipers i think you can use the goodrich rear lines on there.

 

Any one got advice on uprating the mastercylinder etc ?

[Collie 0]

just put some 288 carriers in the classifieds,pm or go via the ad when it appears

 

Collie

[jack 0]

Hi, the link on the first page doesnt work. Does anyone have a complete list of whats needed for this conversion. I'm currently running standard VR breaks on the front. Thanks

[Storm Warning 0]

The Wiki has not been playing nicely for a while but you can still get to the stuff you need : http://wiki.the-corrado.net/312mm_brakes.html

 

Biggest challenge is getting the bolts but if you call Trident racing supplies with your requirements they'll sort you out, also they sell schnorr washers - they are loads better than spring washers for keeping it all tight.

[jack 0]

The Wiki has not been playing nicely for a while but you can still get to the stuff you need : http://wiki.the-corrado.net/312mm_brakes.html

 

Biggest challenge is getting the bolts but if you call Trident racing supplies with your requirements they'll sort you out, also they sell schnorr washers - they are loads better than spring washers for keeping it all tight.

 

Thanks very much

[VRTrickster 0]

Is anyone on forum selling some 6mm spacer plates for the 312 conversion?

[ashley555 0]

Is anyone on forum selling some 6mm spacer plates for the 312 conversion?

 

wandering this myself, if anyone is could they pm me. thanks

[black dub 0]

if there is a few people needing the 6mm spacer plate i can prob get some made as iv had a couple of sets made recently for friends so let me know and ill find out a price.

[8vMatt 1]

On a different forum, someone is selling discs, calipers and pads from a mk5 Golf GTi in 312mm size. I've had a quick read through the list of parts needed to do this conversion but it doesn't mention using anything from the mk5.

 

I'm wondering whether it would be possible to use these or is there a problem which prevents them from fitting?

 

Any guidance would be greatfully appreciated.

 

Matt.

[jack 0]

On a different forum, someone is selling discs, calipers and pads from a mk5 Golf GTi in 312mm size. I've had a quick read through the list of parts needed to do this conversion but it doesn't mention using anything from the mk5.

 

I'm wondering whether it would be possible to use these or is there a problem which prevents them from fitting?

 

Any guidance would be greatfully appreciated.

 

Matt.

 

Did you get MK5 discs? Do they fit?

[8vMatt 1]

On a different forum, someone is selling discs, calipers and pads from a mk5 Golf GTi in 312mm size. I've had a quick read through the list of parts needed to do this conversion but it doesn't mention using anything from the mk5.

 

I'm wondering whether it would be possible to use these or is there a problem which prevents them from fitting?

 

Any guidance would be greatfully appreciated.

 

Matt.

 

Did you get MK5 discs? Do they fit?

 

Hi, I found out the wheels stud placements are 5x112 on a mk5 gti, this will not work on a Corrado. Go for the mk4 Golf ones. Not got any yet.

[Wompa 0]

Wow.. One disk is about 90pounds for the 312mm conversion :cuckoo:

 

The calipers are about 40 each, new! :norty:

[Stonejag 10]

If anybody's still looking for M12x40x1.5 hex head bolts in 10.9 I just got some off eBay - seller name boltmeup. (direct link) They do stainless plain and lock washers as well so you can sort all the hardware out in one order, though I'm getting some stainless spacers made up by the nice man in our machine shop...

 

I have a set of Mk4 front and rear calipers waiting to go on but the braided lines I got from C&R (this set) had the wrong size banjo bolts in them. A quick flourish of the calipers tells me that they gave me 1mm thread pitch but I needed 1.5mm ones - so the wiki isn't quite right, as people already pointed out.

 

One question - I'm missing one of the plastic covers from the calipers, where the slider bolts from the carriers insert. The ones I have are marked 11.8190-00671 but that doesn't get me any search results...can anyone translate it into a VW part number? If not, if anybody has one spare I'd be very grateful for it :)

 

Stone

[Stonejag 10]

Well, it's all fitted...

 

The garage really struggled to bleed the system afterwards and there must still be some air in it as the pedal feels very soggy. Compared to how it was on 280s I have to push the pedal at least halfway down before feeling any resistance. When they gave it back the first thing I did was reverse into another customer's Jag because it wouldn't stop :lol: Also my ABS light is on permanently now and won't cancel when I hold the pedal on starting - any ideas? Fingers crossed they didn't damage the seals by pressure-bleeding.

 

That said, once it kicks in it's really impressive! The harder you press the harder they bite in, unlike the old system where it tailed off at the bottom of the pedal travel. Might need to tweak the pressure regulator for the rears a little since it feels like there's more to come on the fronts by the time they lock up and it gets squirrely, but it's easily knocked a third off my braking distances and emergency braking is much more reassuring. Definitely a worthwhile mod :thumbleft:

 

Stone