GeorgeMartin Posted October 30, 2002 Share Posted October 30, 2002 I need to buy some new solid front discs for the CAT I want to get them from Partco, so can anyone tell me what the donor is? ie Cortina or Triumph. Cheers, G. Link to comment Share on other sites More sharing options...
scooby dooby doo Posted October 30, 2002 Share Posted October 30, 2002 the std ones are Sierra XR4 i think. The uprated ones are special AP design for caterham. HOOPY Membership Number 4136 R706KGU Link to comment Share on other sites More sharing options...
allen Posted October 30, 2002 Share Posted October 30, 2002 Sorry Hoopy, sure you are wrong. Standard front discs are Triumph herald/spitfire - I am sure a search will confirm this. Allen Link to comment Share on other sites More sharing options...
Simos Posted October 30, 2002 Share Posted October 30, 2002 Triumph I believe, XR4 is the rears (I believe). Caterham or James Whiting, 7workshop etc will do them for you for 15 squids each... not much scope for savings. Caterham big brake as mentioned is an AP part. James Whiting does a big brake kit for the standard discs. Link to comment Share on other sites More sharing options...
scooby dooby doo Posted October 30, 2002 Share Posted October 30, 2002 ah - i have uprated fronts and std rears. didn't realise the std fronts and rears were different. sorry for any confusion. i suppose having triumph front uprights does sort of point at having triumph bits doesn't it.... HOOPY Membership Number 4136 R706KGU Link to comment Share on other sites More sharing options...
GeorgeMartin Posted October 30, 2002 Author Share Posted October 30, 2002 Many thanks, I think i will pop down to James Whiting and pick some up. Cheers, G. Link to comment Share on other sites More sharing options...
Violet Elizabeth Posted October 30, 2002 Share Posted October 30, 2002 A useful place for mail order Triumph front brake bits is Rimmer Bros here Link to comment Share on other sites More sharing options...
Chelspeed Posted October 30, 2002 Share Posted October 30, 2002 Simos - sorry you're wrong too! Hoopy - sorry but you're still wrong...... The rear calipers are indeed from the XR4i but the discs are not. The front discs are as others have said Herald fronts and I think the standard Caterham rear discs are identical to the fronts so are Herald fronts too. A check of the parts cd-rom will confirm this if it shows the same part number for front and rear discs. Race vented front brakes, race solid rear discs and the later uprated rear race brakes (the vented ones) are all one off specials made by AP. Link to comment Share on other sites More sharing options...
Rob Walker Posted October 30, 2002 Share Posted October 30, 2002 Sorry Graham you are not correct either the uprated fronts are made by ALCON not AP, I agree with you on the fronts Herald/Spitfire/GT6 and they are the same front and rear. Link to comment Share on other sites More sharing options...
Chelspeed Posted October 30, 2002 Share Posted October 30, 2002 Are you sure? My calipers are definetly AP (bought from Caterham in about 1998), they came in AP boxes and have AP cast into them. They're the older style with silver calipers, the newer ones have black calipers, I suppose these could be from Alcon. The discs came in AP boxes too. James whiting sells Alcon calipers that are 4 pot and use the standard discs, are you thinking of these? Link to comment Share on other sites More sharing options...
scooby dooby doo Posted October 30, 2002 Share Posted October 30, 2002 i think most of us need to say: D'oh ❗ let me know when we've sorted it out ❗ HOOPY Membership Number 4136 R706KGU Link to comment Share on other sites More sharing options...
Fast Westie Posted October 31, 2002 Share Posted October 31, 2002 As far as I know the GT6 front disk is the same diameter as the Herald one, but a bit thicker. Helps if you are hard on the brakes The car in front is a Westfie1d Link to comment Share on other sites More sharing options...
ECR Posted October 31, 2002 Share Posted October 31, 2002 I believe that Caterham have supplied both Alcon and AP disks as spares for the front uprated setup and that they were manufactured to the same design so as to be interchangeable. However apparently Alcon did not actually manufacture them, they were manufactured for them by a part of the European Automotive Components Group (who have also supplied AP and Brembo) The cast blanks were derived from a Nissan part. Oh and the bloke who cast them was named Charlie... (Anyone care to take this back any further ) Link to comment Share on other sites More sharing options...
Graham Perry Posted October 31, 2002 Share Posted October 31, 2002 The GT6 disc is slightly larger by about 3/16 " and is thicker. I use them on my seven and had to turn them down slightly in a lathe Graham Link to comment Share on other sites More sharing options...
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