UPDATED:
Scimitar Rear Disc Conversion...
Scimitar rear disc brake conversion. With 4 pot Wilwoods up front, and a lighter engine you need something a bit more up to the job for the rear...
LATEST: If you would like the backplate etc to do this conversion on your SE5 or SE6 Scimitar GTE I may be able to help, email sam@v8church.co.uk. I will supply a list of the calipers / discs etc you need to get running.
I have been running my SE6 with this conversion since November 2005 and its mighty. The braking feel is far better and combined with the Wilwood 4 Pots up front my scim now stops better than ever ... over and over again ... When braking from high speeds the power is superb, less effort than my V6 Quattro is required to bring it to a very prompt halt - all using the std master cylinder.
If anyone tells you "the standard scimitar brakes are fine, you can lock them up at 100" (you know, in that squeaky anorak tone) then just challenge them to a brisk drive down a decent twisting hill. That'll soon put an end to their smug remarks.
Here are some pics taken before I fitted the axle (last year).
(click to enlarge)
Since no-one else volunteered any information this conversion was worked out by myself and ABC Computer Desks (yes, they make desks but as engineers were invaluable in getting parts designed and punched!). Its very "trial and error" and will require set-up via an adjustable brake bias valve to get proper braking balance right.
July 2006: The handbrake wasn't an issue, the mechanism on the VW / Audi calipers is very Scim-cable friendly... I had to lengthen the bolt in handbrake cable mount in the transmission tunnel to buy enough cable to reach the calipers but this was only an hours work. We may be able to get new items punched to save you the effort.
Other Options...
Jaguar IRS axle - An article by Mr Will Cowell who converted a Scimitar some years ago to Jag IRS.
There's some debate (as usual) about the benefits of Jag IRS but here we're all in favour of modifying and trying rather than whining and being negative.
People worry about "unbalancing the braking effort", one guy I asked bored me to tears about "asking the RIGHT questions", "what is the un-sprung weight?", "have you calculated your..." - you get the picture! It's all crap, if you just want to go a bit quick then get on with this mod, if you have the time then do the maths and impress girls with your superior speccy powers!
Disclaimer: Messing with brakes on a car is very likely to get you and others killed nastily and unfairly - don't do it!!! If you run a non-standard braking system it should be for track use ONLY.
Watch this space to see how I get on though eh...