Member Since: 13 Apr 2014
Location: Aberdeenshire
Posts: 122
D3 to D4 brake upgrade
Hi Guys,
I think Im needing to replace the calipers on the front, and I definitely need to replace the front and rear discs.
What (reasonably inexpensive) options are there to upgrade the brakes? Ive seen before someone putting D4 brakes on a D3, but Im at work and cant really spend the time sifting through all the posts (a quick search didn't reveal anything immediately).
Ideally I would be looking for drilled/grooved front and rear discs, uprated front calipers and new pads etc.... anything else? would I need spacers/adaptors to fit D4 front calipers?
Also how does one get to the forwardmost front upper wishbone bolts to undo them to replace the bushes? seems like the airspring is in the way?
Thanks
Matt
3rd Sep 2014 4:39 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8221
You mean like this
Although not quite as good (braking wise) it's a cheaper option to fit the V8 conversion, advancedfactors have the complete kit front and rear, drilled are unnecessary.
Although the D4 callipers are larger to accommodate larger pads the pistons in the callipers are the same size, if you want bigger callipers and pistons you will have to go the Brembo way which is two steps up the ladder cost wise. I can assure you the D4 callipers do the job as good as anything and have tremendous stopping power without overheating, without them my car would now be awaiting front end repair from an idiot who could not stop at a junction yesterday.It can when others can't,
It will when others won't,
It goes where others don't.
3rd Sep 2014 5:36 pm
Fitzy73
Member Since: 09 Feb 2014
Location: Truro
Posts: 2407
I can't wait for the D5 to come out so I can upgrade the brakes on my D4!
3rd Sep 2014 8:03 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8221
It can when others can't,
It will when others won't,
It goes where others don't.
3rd Sep 2014 8:08 pm
Cellerdweller
Member Since: 05 Oct 2012
Location: Macclesfield
Posts: 1315
That reminds me I've got a brand new pair of d4calipers think I'd better buy some discs and back plates to go with them You're not afraid of the dark are you ?
3rd Sep 2014 8:15 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8221
And pads and caliper carriers It can when others can't,
It will when others won't,
It goes where others don't.
3rd Sep 2014 9:14 pm
Cellerdweller
Member Since: 05 Oct 2012
Location: Macclesfield
Posts: 1315
I have pads and the calipers came with carriers . I think I'll do the rear v8 upgrade at the same time too . You're not afraid of the dark are you ?
4th Sep 2014 5:51 am
mattm
Member Since: 13 Apr 2014
Location: Aberdeenshire
Posts: 122
Im just looking into this now... do I need to get V8 brake calipers? or does it use the same calipers... just bigger pads and discs?
4th Sep 2014 1:31 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8221
It's a good idea to do the rears, I will be doing mine when they've worn more, I notice the rears in standard form definitely get hotter than the fronts with D4 disks and for the price of the carriers (SXP500014 same no. each side £17.80+vat each) it's a no brainer.
You do need 19" wheels though to clear the larger calipers.It can when others can't,
It will when others won't,
It goes where others don't.
Im just looking into this now... do I need to get V8 brake calipers? or does it use the same calipers... just bigger pads and discs?
Same callipers. New carriers and discs. New pads obviously, but the same size.
It's very simple to do - It's a good idea to give your park brake shoes an overhaul while your there - you'll need to adjust them and bed them in.
You need 18" wheels for the V8 brakes. 19" for D4 brakes or Brembos.
The kits from Steve @ Advanced factors include everything you need except the tools. Current: Discovery 3 06MY (55 reg) HSE Auto Zambezi Silver Allisport Fast Road Intercooler, V8 Brakes, Silicone IC Hoses, EGRs Blanked, Remapped, De-Cat pipe, FBHIC
Freelander 2 2007 HSE Manual Tambora Flame
Previous: FL2 56 reg SE Manual Black (written off )
Disco 3 06 reg B7S Manual Rimini Red
Disco 2 TD5 Y reg ES Manual Blue - Chipped
Several Discovery 300 TDis
5th Sep 2014 8:50 am
DiscoJake
Member Since: 23 Aug 2013
Location: Hereford
Posts: 1429
Just a note for reference; not every 19" wheel will fit over Brembo callipers, you need the early 6 spoke D3 hse wheels (late d3 7 spokes don't fit) or RRS 19" wheels
21st Mar 2016 7:55 am
Ginner
Member Since: 28 May 2014
Location: Cheshire
Posts: 189
6 pot brembro's need 20" wheels
21st Mar 2016 9:35 pm
Iceman08
Member Since: 22 Sep 2014
Location: Hereford
Posts: 2284
Anyone have any part numbers to upgrade to D4 brakes?
21st Mar 2016 10:21 pm
Lynhay
Member Since: 16 Oct 2015
Location: Worthing
Posts: 50
What's wrong with the brakes on a D3 then ??
21st Mar 2016 10:36 pm
Iceman08
Member Since: 22 Sep 2014
Location: Hereford
Posts: 2284
Do any of you knowledgable folks know if I need to replace the front splash shields on my D3 when upgrading to 3.0 D4 discs and callipers?
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I've got a brand new pair of d4calipers think I'd better buy some discs and back plates to go with them 
Allisport Fast Road Intercooler, V8 Brakes, Silicone IC Hoses, EGRs Blanked, Remapped, De-Cat pipe, FBHIC
)
