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796 wrote:MGF rear calipers, not that good really,  also catch the spring tunnel wid the cable. Saxo VTS calipers, modded  are ok for foot brake, but run same prob as MGF, they catch the tunnel SX200 calipers,  v slightly modded work great HB is also so so much better, an ne catch,n the tunnel with the cable. What ever set up ye bung on, it will need a .7 or .75 MC also will require a RPV to keep lines charged, 2 PSI is all thats needed as the rear calipers have alott bigger cyls than the HB ,ns so pedal moves further, to floor, with nee mods  !!! there deffo ne need for a bias valve at all, well GT anyhoo, some serious braking going on back here, an ne rear end slide on footy brake application and thats with 280 MM rear discs an 305 fronts with 4 pots there 2 diff articles I did on 2 diff types of rear disc set up the SX200 is far superior in all departments to any thing else HB is so so powerfull with oot actually pulling on the footy brake, like all others will doo. as usual, cant fin the articles on search, so mebe some  folk adept at the search fnctionee can fin em reason I went to rears was to stop brake snatch at high speeds on sweeping bends, esp when suspension travel can actually bung yer rears on with oot yer say so. M Are we talking Nissan 200SX caliper? I already own a Wilwood RPV that's sat around doing nothing. Slight modding? Thanks for the post :-)

Spitfire used to a 1500 with TH12 cam / lightend flywheel and went well but sadly the engine started to have issues. Then it got a mazda engine SC. Now it's turbo You can follow it on Facebook if you have an account > http://www.facebook.com/TSMod

7952 wrote:Here is one, although I have no experience with it. http://prirace.com/page/triumph-gt6-rear-disk-brake-ki Ouch. Makes the front kit look very cheap. Thanks for the input.. It does indeed provide some help as to how it all works.

cliftyhanger wrote:A diff conversion may be on the cards with 200bhp...... Then it should be part of teh package. I believe the polo (and probably golf) calipers were /are a common fitment, used on lots of kitcars. the bracket was a flat plate I think, so no welding. And yes, I still think the discs/callipers/brackets weigh more than a drum and backplate. Add a rotoflex upright and the difference is substantial..... Maybe I should weigh them all, but then again I do not have any drums/backplates. Can certainly weigh a polo calliper v an MGF version. Not tomorrow, Thursday doubtful. Friday looking a good chance.... I will google the polo/golf idea.

junkuser wrote:An advantage of having discs all 'round is having matching fade characteristics front and back, which could well be an advantage on a "Spitfire with 200bhp or so". (Rather sounds as though it may not be driven too gently) It was supercharged before but now turbo. I got fed up with the lack of SC power so took it off the road for a year and now I'm setting up for the turbo.

bobyspit wrote:I am going the MGF TF rear conversion, I have the calipers, they accept a handbrake and are cheap. Heavy? still lighter than a drum rear end, and being MGF you can use the correct disc and fabricate a bracket. Tim (bestquality03) did this to great results , especially with the Canley front conversion. Rob Rob, How far along are you? Any pictures? I see the discs and calipers  are very cheap to buy so it's worth a punt.

Hi Clive, Thanks for the speedy reply. Are you saying Polo (year?) are lighter and a fit for the MGF discs? 5mm plate sounds idea. I would have a pro weld that up for me. I could tack it though. Does anyone have a scan of the magazine or is it possible to buy? I have a Spitfire with 200bhp or so.. I builds up speedy rather quickly and I would like discs all round to stop it. The front standards simple are not man enough but those are not 4 pots and the rears ideally need an upgrade. Plus I like to tinker with things. Regards Martin

Hi, I already have a Canley classics front big brake kit and now I'm looking at the rears. Does anyone sell a kit or the plans to DIY? I see TimW has MGTF rear calipers installed but it's not a plan/too much info (His not required to share anything) it's enough to know what is needed but not enough ideally for me to work with. Any input regarding what is needed/who sells/mods ect would be helpful. My car is 73 Spitfire with swing spring. Thanks MArtin