7xx/9xx 320mm P1 brake conversion

[petercz]

I was wondering if anyone tried 320mm front brakes from V50 T5 AWD? On p80 it?s a nice upgrade and you can fit some 16" wheels over them. Now I have 302mm brakes from p80, which is ease fit with some spacing, so it should be possible?
http://www.dvs.net.au/320conv.html

 

[PNW760]

To install the 302mm I think you need brackets that IPD sells. What?s required to do the 320mm upgrade on a P80? Is it a direct bolt on? Following because I need to upgrade my brakes so this might be a nice route

 

[white855T]

Looks like you need the dvs adapter so looks very doable but need 16" wheels and I imagine not all wheels would clear.

 

[EFbI4]

Simpliest method: but W220 calipers 330 (345) mm, but 316 (330) mm Volvo brake discs, put 5 mm spacers and you done it.

 

[doucheNozzle]

It's still just a fixed single piston brake.

 

[GSWAGON]

interested

 

[petercz]

I?m also thinking about 316mm brakes from p2 xc90, a bit smaller, but better accessibility and without need of enlarging the rotor center hole. Any thoughts? I think I?ll try to make something work.

 

[Swedbrick]

I used the 316 calipers with 336mm disks, that also gives you some more space to access the bolts on the adapter bracket

 

[petercz]

So I made adapters for the P1 320mm brakes, I think it´s pretty good

 

[lookforjoe]

So I made adapters for the P1 320mm brakes, I think it´s pretty good

Nice work. Any better pics of your adaptor? It looks like there is only one bolt in the pic. what rotor did you use with it?

 

[petercz]

I used stock P1 Brembo rotors, just the center hole must be turned to 65.1mm (same as on P80) and also longer brake lines were needed.

 

[Mylesofsmyles]

Simpliest method: but W220 calipers 330 (345) mm, but 316 (330) mm Volvo brake discs, put 5 mm spacers and you done it.

Any photos of this done? You’re referring to the aluminum 4-pistons from an s-class?? Thats a bolt on affair?

How does it like the factory 7/9 brake master cylinder bore?

 

[lookforjoe]

I used stock P1 Brembo rotors, just the center hole must be turned to 65.1mm (same as on P80) and also longer brake lines were needed.

View attachment 20902 View attachment 20903

So, you just need a parallel adapter to space out the caliper & get a machine shop to turn the centers. Does the caliper/pad orient correctly on the rotor surface with the bracket angled like that? At a glance it would appear that the pad would not sit evenly on the edge of the rotor. Any pics of that fitment.

 

[petercz]

All three holes are on same circle from the knuckle center, just the P1 calipers have smaller hole pitch, so everything is even and centered Pretty much same as on p80, just a bit different adapters (+bolts) and longer brake lines https://www.vivaperformance.com/content/pdf/dvs-p80-320mm-brake-conversion.pdf

 

[petercz]

After some bedding I can say the braking power is very good Also tested 16" Hydra and Auriga wheels, both fit, but tight (same as my Perfos). If there would be interest, I can make more of these adapters.