Dannyboy Posted July 22, 2002 Share Posted July 22, 2002 I have been told that the 4 pot brake conversion involves the purchase of what are basically old BL (think it was suggested Austin Princess??) callipers with Triumph GT6 discs... Is this correct and if so what mods do I need to make to get said system to work???? I know that every item on the 7 is stolen from some vehicle or other and am keen to upgrade to 4 pots asap!! Anyone suggest the donor vehicle for discs and callipers if I am incorrect?? Dannyboy he's a cheesy geezer (:p) Link to comment Share on other sites More sharing options...
Graham Sewell Posted July 22, 2002 Share Posted July 22, 2002 I don't think that the Princess calipers fit a Seven as the uprights are wrong. The Caterham offering is totally bespoke from AP. Other companies also do conversions but they are bespoke as well (eg Alcon from James Whiting). S I don't think there is a 'cheap' route to this upgrade. Low tech luddite - xflow and proud! Link to comment Share on other sites More sharing options...
Graham Perry Posted July 22, 2002 Share Posted July 22, 2002 You have it right. It certainly fits the older cars. My 1990 car had this bargain upgrade on it for about 5 years. The whole upgrade cost GBP 80 including the refresher kits for the Brakes. The calipers also need a slight tweak to convert them from twin flexable feed pipes to singles.(A cunifer pipe is needed to link one side of the caliper to the other) The GT6 or Vitesse discs are definately the right ones (they are the same) , they are slightly wider and thicker than standard Herald based Caterham ones, but the Princess set up was designed for wider ventilated discs anyway so there is loads of room. I think the only Mod that was needed apart from the pipework was a pair if thin washers to centralise the Caliper on the disc. The Caterham upright is based on that of the Herald (it may even be one) so it should be a straight fit. Not so sure about the newer cars without the Trunnions , anyone know ? The only drawback with the princess calipers is a/ they are heavy. b/ they are now very hard to find in scrappies as everyone knows about this trick and there are several other cars they will fit as well, including Escorts. Alan 'Hairy' Hockham currently runs his Seven with this mod , and reckons its the cheapest most cost effective upgrade he has ever come across. Edited by - Graham Perry on 22 Jul 2002 16:26:23 Link to comment Share on other sites More sharing options...
Rob Morris Posted July 22, 2002 Share Posted July 22, 2002 FOR SALE - Pair Princess calipers As stated these are like hens teeth nowdays, however, I have a pair ready for renovation and fitment. Any offers? (01952) 240730 Rob M. 40th Anniversary Vauxhall Man www.slipstream-trackdays.co.ukid=red> Link to comment Share on other sites More sharing options...
Blatman Posted July 22, 2002 Share Posted July 22, 2002 Princess calipers are (or at least, were) available from Morgan dealers....... Link to comment Share on other sites More sharing options...
matthewwatkiss Posted July 23, 2002 Share Posted July 23, 2002 Yes indeed gents. One other mod you will need to make is to bend the wingstay to go around the caliper, as they are big old things. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now