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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2300

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Rear caliper/pad/disc clearance issue
Fitted my new front brakes today, all went to plan... Was about to move on to the rears but noticed that the 12mm pad to pad clearance is too narrow for the 14mm disc!?

Any thoughts what’s going on here?

Calipers, discs and pads are brand new and all part numbers are correct

Disc looks to be slightly thick compared with specification of 14.1mm but even still, the 12mm pad spacing is still not right


Click image to enlarge



Click image to enlarge
 > 110 XS Double Cab
Post #904436 22nd May 2021 1:56pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17387

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Are any of the parts Britpart?
Post #904441 22nd May 2021 3:09pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2300

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
No all AP Delphi > 110 XS Double Cab
Post #904448 22nd May 2021 3:56pm
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Pacha



Member Since: 23 Feb 2020
Location: North Yorkshire
Posts: 772

United Kingdom 2008 Defender 90 Puma 2.4 HT Stornoway Grey
I am sure the rear disc thickness spec is 12mm when new?. Rgds.

Chris
Post #904450 22nd May 2021 4:03pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2300

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Haynes says 14.1mm for 110 and 130, 12.5mm for 90


Click image to enlarge
 > 110 XS Double Cab


Last edited by hank on 22nd May 2021 4:18pm. Edited 1 time in total
Post #904451 22nd May 2021 4:14pm
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Pacha



Member Since: 23 Feb 2020
Location: North Yorkshire
Posts: 772

United Kingdom 2008 Defender 90 Puma 2.4 HT Stornoway Grey
Not sure - I was referring to the disc thickness, not the pads. Rgds.

Chris
Post #904452 22nd May 2021 4:16pm
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grafty99



Member Since: 15 Aug 2012
Location: North Devon
Posts: 4785

United Kingdom 2002 Defender 90 Td5 HT Caledonian Blue
It is hard to say for sure from the picture, but that caliper/pad combination looks 90 sized to me.

110 rear calipers/pads have a larger piston and, therefore, pad setup. I think piston diameter is 41mm for 90 and 46mm (or something like that) for 110 off the top of my head.

Could it be that they've been incorrectly labelled? 2002 90 Td5 Station Wagon
1990 Vogue SE
Triumph Tiger Explorer 1200
Td5 90 Thread http://www.defender2.net/forum/topic50767.html
Tdi 110 Thread https://www.defender2.net/forum/topic69562.html
RRC Thread http://www.defender2.net/forum/topic54492.html
Instagram http://www.instagram.com/george_grafton
Post #904455 22nd May 2021 4:44pm
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Retroanaconda



Member Since: 04 Jan 2012
Location: Scotland
Posts: 2647

Scotland 
Was there not a change made to later 110s to give them thicker brake pads in an attempt to address short pad life? If the disc was the same thickness then presumably to do this they had to make the caliper wider. If you tried to put the later pads into an earlier caliper you could have this issue?
Post #904461 22nd May 2021 5:32pm
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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 2007

United Kingdom 
I just had a look at the apec brakes site, their catalogue shows two rear disc options for 1989 - 2007 110’s. 12.6mm and 14mm. The pad thicknesses being the same at 14.5mm. Looks like you need the thinner disc from that.

Have a look at their site to double check https://www.apecbraking.co.uk/Catalogue.aspx
Post #904463 22nd May 2021 5:55pm
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rallysteve



Member Since: 10 Feb 2014
Location: Cumbria
Posts: 2229

United Kingdom 2002 Defender 110 Td5 DCPU Keswick Green
I think you might have bought the later pads but earlier calipers Confused

Later calipers are wider to allow the thicker pads to be used. As you probably cant return now then i would just buy the older part number pads.

Steve 02' 110 TD5 Double Cab Rebuild Thread
Post #904469 22nd May 2021 6:42pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5707

2006 Defender 110 Td5 USW Zermatt Silver
Looks to me that you’ve been given 90 rear callipers not 110 ones.
Post #904532 23rd May 2021 9:52am
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2300

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
They’re definitely 110 callipers as I fitted 46mm stainless pistons to them.

As rallysteve says, I think they might be pre 2007 ‘narrow’ calipers which need the narrower discs Ian mentions. > 110 XS Double Cab
Post #904536 23rd May 2021 10:50am
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2300

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
For closure on this...

110 narrow/early caliper part numbers = STC1268 (RHS) and STC1269 (LHS)
110 wide/late caliper part numbers = SMC500270 (RHS) and SMC500260 (LHS) > 110 XS Double Cab
Post #904713 24th May 2021 2:16pm
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rallysteve



Member Since: 10 Feb 2014
Location: Cumbria
Posts: 2229

United Kingdom 2002 Defender 110 Td5 DCPU Keswick Green
To also hopefully help anyone else running into this:

Earlier thin pads (upto 2A) - STC1601
Later thick pads (from 2A) - SFP000250 02' 110 TD5 Double Cab Rebuild Thread
Post #904730 24th May 2021 3:23pm
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