flyin_scouseman Posted August 21, 2006 Share Posted August 21, 2006 Hi all, i'm thinking of upgrading my disks and callipers and found a decently priced set of drilled and grooved brembo disks on ebay.com .... Only problem is that they are US spec. Will these fit my J-spec motor if i upgrade to uk spec callipers? Any help welcome Cheers, Andy. Quote Link to comment Share on other sites More sharing options...
colsoop Posted August 21, 2006 Share Posted August 21, 2006 Yes uk spec is the same as american spec althoguh i would personally say that the stock disks are best unless going for the 2 piece disks. Get stock disks and decent pads and that should see you well. Quote Link to comment Share on other sites More sharing options...
jackso11 Posted August 21, 2006 Share Posted August 21, 2006 I may sound like an idiot when I say this but when you say stock disks you mean UK spec stock disks right? J-spec disks won't fit with UK calipers...right? Quote Link to comment Share on other sites More sharing options...
Jake Posted August 21, 2006 Share Posted August 21, 2006 Right Quote Link to comment Share on other sites More sharing options...
JohnA Posted August 22, 2006 Share Posted August 22, 2006 Replacing the master cylinder wouldn't be a bad idea either - more piston surface asks for a bigger one. Quote Link to comment Share on other sites More sharing options...
Lebsteif Posted August 22, 2006 Share Posted August 22, 2006 "Replacing the master cylinder" how much would that cost? and how difficult is it to do? Quote Link to comment Share on other sites More sharing options...
JohnA Posted August 22, 2006 Share Posted August 22, 2006 You may also want to investigate any other parts that might need replacing, as the braking balance of the EuroSpec is different to that of the JSpec. Traction Control on EuroSpec uses the brakes as well, so that complicates things further still. Most people just slap on disks, pads, spacers and calipers and hope for the best. This might be much better than the JSpec setup, but maybe not up to the stock big brake setup. Quote Link to comment Share on other sites More sharing options...
dandan Posted August 22, 2006 Share Posted August 22, 2006 The "UK Spec" brakes were a factory option on a J Spec car anyway so I wouldn't concern myself too much if I was doing the swap. I've not seen any master cylinder differences between mine and my brother's car using the EPC. I have factory fitted UK specs and he has J specs. Quote Link to comment Share on other sites More sharing options...
Nic Posted August 23, 2006 Share Posted August 23, 2006 The brake master cylinders are different on the cars with the bigger brakes fitted from the factory. I have seen the master cylinder flex a lot on some of the Supras that have retro fitted the bigger brakes. A new master cylinder and a brace for the master cylinder would be a good idea. Andy if you want prices for the larger brakes let me know, as I can do very good deals on them. Quote Link to comment Share on other sites More sharing options...
Terminator Posted August 23, 2006 Share Posted August 23, 2006 The UK upgrade has been discussed many times. The cylinder upgrade has not been done very often, as it is not necessary. As far as I know no one has gone all the way and replaced the whole sytem including the TC element as there are better and cheaper ways to get TC. I have had UK brakes on my car for four years now, used fast road and track in an auto so heavier use than a 6. I have never had a problem with brake blance or any other aspect of braking. Some people just change the fronts as the balance only really come in to play at low speeds. Even with stock pads expect a considrable improvement in braking Quote Link to comment Share on other sites More sharing options...
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