850 brake upgrade xc90 calipers

Ben Perry · Dec 1st, 2017, 17:12

Hi all as title I want to up grade the brakes on my 850 as they are juddering ( and are abit Small)thought about running xc90 calipers with 335mm discs Any done done it or could help
cheers Ben

DunkinBiskits · Dec 2nd, 2017, 15:06

seen this done to P2s but never to an 850. on the S60s you need to redrill the knuckle to receive the mounting bolts (12mm to 14mm).

T5R_Guy · Dec 6th, 2017, 17:32

Go to 302's, made a huge difference to my T5r and all the stuff is readily available,

...Guy

doingitsideways · Dec 6th, 2017, 19:07

Or search for DVS Australia.

They make adapters to take the 320mm setup from a Focus ST.

XC90 stuff won't fit a P80 car without massive amounts of work

scutyde · Dec 7th, 2017, 07:53

I fitted the DVS adapters with the V50 brake calipers and 16.5" discs on a V70 R. Fitted perfectly very nice brakes.

Steve440 · Dec 9th, 2017, 10:31

Quote:

Originally Posted by scutyde

I fitted the DVS adapters with the V50 brake calipers and 16.5" discs on a V70 R. Fitted perfectly very nice brakes.

Just looked on their website and those adaptors are not expensive, don't know what the shipping is like from Oz though? Added to my to do list though!

DunkinBiskits · Dec 9th, 2017, 11:02

ive read on a few posts that these dont follow the radius of the disc correctly and the worn pad overhangs the OD as they share one of the 2 existing bolt holes. id like to be wrong but ive read it a few times now

Maybe Scutyde photos would show any issues

scutyde · Dec 10th, 2017, 14:12

Yes this is correct the pad does not sit 100% perfect due to the adapter. However it's only minimaly off the disc so there is no real issue there. The system is still a 1 piston setup so mainly only a bigger caliper with the same working principle. However due to the bigger and thicker brake disc there a fewer issues from hard braking from high speed (we live in Germany

)
and also due to the fact that the caliper is farther away from the center the leverage improves which makes the braking overall better. The brake hoses also were replaced along with brake fluid.

Dec 2nd, 2017, 15:06	#2
DunkinBiskits Master Member Last Online: Jan 1st, 2024 13:30 Join Date: Nov 2016 Location: Merseyside	seen this done to P2s but never to an 850. on the S60s you need to redrill the knuckle to receive the mounting bolts (12mm to 14mm). __________________ https://www.facebook.com/VolvoComposites/ Horsepower is how fast you hit the wall Torque is how far you take the wall with you

Dec 6th, 2017, 17:32	#3
T5R_Guy Member Last Online: Dec 27th, 2019 18:44 Join Date: Jan 2006 Location: Bournemouth	Go to 302's, made a huge difference to my T5r and all the stuff is readily available, ...Guy __________________ Previous Car, 1995 T5-R Gul yellow Estate Current Car, 1996 T5-R Olive Green Estate

Dec 6th, 2017, 19:07	#4
doingitsideways The Daddy Last Online: Feb 29th, 2024 15:07 Join Date: May 2010 Location: Manchester	Or search for DVS Australia. They make adapters to take the 320mm setup from a Focus ST. XC90 stuff won't fit a P80 car without massive amounts of work __________________ XC90 V8 Exec, C70 2.4T Convertible, S70 T5 CD, 850 TDI, 2 x Escort vans and a 2.8i Capri. Clearout has begun, but must continue!

Dec 9th, 2017, 11:02	#7
DunkinBiskits Master Member Last Online: Jan 1st, 2024 13:30 Join Date: Nov 2016 Location: Merseyside	ive read on a few posts that these dont follow the radius of the disc correctly and the worn pad overhangs the OD as they share one of the 2 existing bolt holes. id like to be wrong but ive read it a few times now Maybe Scutyde photos would show any issues __________________ https://www.facebook.com/VolvoComposites/ Horsepower is how fast you hit the wall Torque is how far you take the wall with you

Dec 10th, 2017, 14:12	#8
scutyde Retrofit master Last Online: Mar 28th, 2022 10:14 Join Date: Mar 2010 Location: Berlin	Yes this is correct the pad does not sit 100% perfect due to the adapter. However it's only minimaly off the disc so there is no real issue there. The system is still a 1 piston setup so mainly only a bigger caliper with the same working principle. However due to the bigger and thicker brake disc there a fewer issues from hard braking from high speed (we live in Germany ) and also due to the fact that the caliper is farther away from the center the leverage improves which makes the braking overall better. The brake hoses also were replaced along with brake fluid. __________________ Volvo 850 2.5 20V MY95 Pictures Here what I retroffited so far List

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