280mm mk1 brake upgrade

[Peter Jones]

An adaptor that used the Mk3 calipers would be ideal. There's heaps of options once you've got the MK3 bolt spacing.

I reckon it'd be possible to make an adaptor that has both MK1 and MK3 bolt spacing.

Pete

[GOLFBALLS]

yeah pretty sure the tsr caliper offset bracket requires a diff disc offset but i will investigate with stock 280mm cordoba discs and let you all know, much cheaper then if that works

280mm cordoba discs???? Normal stock cordoba discs are 239mm. Maybe you meant 'corrado'? Grant still has a set of the 280's there i think if you wanted to try them...

So Luke why are you going from this tsr kit which is already 280mm to a VR6 setup of the same size? Is it just for the bigger calipers/pads?

Also as far as I know all the 280mm discs found on Golf and Corrado G60's, and Ibiza Cupra's are the same offset/bell height. I think maybe even the 280 VR6 are the same - except they are 5x100. There are some Golf 4 280mm discs in 5x100 too, but they are a different offset FYI.

Also Loon, which mk2/seat calipers are you talking about? The post 1989 16valve GTI ones are the only mk2 brakes that have removable caliper carriers. All other mk2 hubs and calipers have fixed carriers to the hubs and are completely different to the mk1 setup aren't they?

All the mk3 calipers will definately work with an adapter though.

I'd be very keen to get something made up like Pete says to give you the option to either extend the original mk1 GTI caliper out, or just use the mk3 calipers with a 280mm disc!

Cheers,
Wade

[Jarred]

280mm cordoba discs???? Normal stock cordoba discs are 239mm.

I"m sure he meant Cupra. are the cupra and VR discs the same? (bar the 4 and 5 stud difference??)

[GRN_VAGN]

Cheers Volksee!

Sounds like a worthwhile upgrade then

[GOLFBALLS]

I"m sure he meant Cupra. are the cupra and VR discs the same? (bar the 4 and 5 stud difference??)

Actually, I'm not so sure now... because the VR6 is wide track and the hubs have differences in the arm lengths and lower ball joint position, and also where the caliper mount is set back a bit. So they might be a 'flatter' type disc bell height on the VR6.

Thing is, I went and sourced Corrado G60 hubs for my mk2, and when i got them i noticed they are the same as standard Golf 3 GL/CL hubs! Then I'm using (early) VR6 calipers and the Cupra/G60 discs, and it all fits together perfectly.

Ah i dunno!

[roccodingo]

Luke the VW fitment black diamond 280 discs should be here mid May, think there is a few sets of std ones left also.

From memory the only issue with using the earlier GTI calipers spaced out on the 280 disc is that the pads actually spill over the outside radius of the disc itself, not by much though. Thought about making an adaptor for this years ago but just went and got the 256 / 280 calipers instead

I have a set of VR6 calipers here ( thanks MattyT ) and will check them against the std corrado and 16V scirocco caliper for offset spacing differences, the differenc may well be just in the pad thickness'/ offset .

So does any of that make sense ?????

[Golf Loon]

Early and Late VR6s have different Offset Disks.
Early ones are the same offset as cupra.
Later brakes have a bigger caliper and have a cage aroound them and the disks are a different offset.

Early VR6 caliper will bolt straight onto GL Hubs and work with the Cupra Disks to give you 280mm on any Mk2, 3 or SEAT.

The Mk1 GTI brakes Wade, which are stamped VWII on them also come on the Mk3s and 2s and SEATs which have the carrier built in. You can remove the caliper, but you need the VW bolt on adaptor to fit em to a Mk1.

They are designed for vented brakes and the similar looking ones which are stamped VWI are for non vented and wont open enough for a vented disk.

That is why the vented and non vented pads are the same shape, but have different thicknesses.

The VW Carrier is the missing piece and has been unavailable for years.

I agree with Pete Jones, I reckon an adaptor that bolted to the Mk3 caliper and the Mk1 hub would be the grouse.
Cheap and easy parts and pads and would allow 254mm and 280mm brake conversions.

If anyone wants to make a few sets of them, I will put my hand up for 3 sets right now.

[dubai gti]

I'd be interested to know the cost per set please ??

[GOLFBALLS]

Early and Late VR6s have different Offset Disks.
Early ones are the same offset as cupra.
Later brakes have a bigger caliper and have a cage aroound them and the disks are a different offset.

Early VR6 caliper will bolt straight onto GL Hubs and work with the Cupra Disks to give you 280mm on any Mk2, 3 or SEAT.

The Mk1 GTI brakes Wade, which are stamped VWII on them also come on the Mk3s and 2s and SEATs which have the carrier built in. You can remove the caliper, but you need the VW bolt on adaptor to fit em to a Mk1.

They are designed for vented brakes and the similar looking ones which are stamped VWI are for non vented and wont open enough for a vented disk.

That is why the vented and non vented pads are the same shape, but have different thicknesses.

The VW Carrier is the missing piece and has been unavailable for years.

I agree with Pete Jones, I reckon an adaptor that bolted to the Mk3 caliper and the Mk1 hub would be the grouse.
Cheap and easy parts and pads and would allow 254mm and 280mm brake conversions.

If anyone wants to make a few sets of them, I will put my hand up for 3 sets right now.

Sweet bloke, thanks for clarifying.

And yea, I'd put money down for two sets if one adapter can be made for the fitment of either mk3 or mk1 GTI calipers!

[Volksee77]

Yep you all could go and make up that said adaptor plate but i bet nobody on here actually goes and does it because it is damn hard work and needs alot of time to get perfect as it is your brakes after all. Was going to make up a very easy and cheap adaptor for this kit as i already have the adaptor to copy (the tsr kit has custom offset disc bell hieghts to work with the adaptor plate) to keep the cost down for everyone but hey if everyone wants mk3 calipers (more cost again) then i won't bother and i'll leave setup and race pads on my Dads Diesel. Hope to see some pics of these mk3 brakes on your mk1's soon. Would be beter just to make an adaptor for the mk5 brakes and go all the way with big modern brakes and ABS. Now that is worth doing.

Wade, i'm putting the vr6 brakes on my race car to better utilise the brake surface area available on 280 discs instead of the smaller pad area on mk1 calipers thats all as i reckon there are still seconds to gain in the braking zone.