Maverik Posted May 20, 2010 Share Posted May 20, 2010 I have a "older" style narrow radius arm front axel, and I want to get a new set of calipers. there are heaps on fleebay. Now a question; are all front calipers interchangable with the verious models of disc front axels? i.e. can i put some TD5 vented calipers on a 1984yr front disc axel? I know you have to match vented type to vented discs, but is there a difference in the foundation points? And is there a difference between 90 calipers and 110 calipers?? Cheers Mav Quote Link to comment Share on other sites More sharing options...
jbs Posted May 20, 2010 Share Posted May 20, 2010 There is a difference between the two types of calipers ie: 90 and 110 however I have a 90 but I have 110 vented calipers on the front of my truck Quote Link to comment Share on other sites More sharing options...
jad Posted May 20, 2010 Share Posted May 20, 2010 you also get two different types of threads on the bolts, 12mm and something imperial but i cannot quite remember what it is... yours assuming it is original should be the imperial size Quote Link to comment Share on other sites More sharing options...
Paul Woodward Posted May 21, 2010 Share Posted May 21, 2010 The bolt sizes are 12mm or 7/16 UNF. The bolt spacings are the same though. If you want to fit calipers with 12mm bolts on a 7/16 UNF hub then you'll need to have some special bolts made. There are a variety of different piston sizes depending on year and if it's 90 or 110. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted May 22, 2010 Share Posted May 22, 2010 Ok, so if I wanted to fit vented discs to my 1984 90 with an original unvented disc axle, which calipers would I need assuming, as I am, that the hubs would be imperial ? Perhaps they'd be metric by 1984 ? Lets use Paddocks front brake page as a common reference point for simplicitys sake Mo Quote Link to comment Share on other sites More sharing options...
Maverik Posted May 22, 2010 Author Share Posted May 22, 2010 The bolt sizes are 12mm or 7/16 UNF. The bolt spacings are the same though. If you want to fit calipers with 12mm bolts on a 7/16 UNF hub then you'll need to have some special bolts made. There are a variety of different piston sizes depending on year and if it's 90 or 110. Could you clarify something. why if the bolt pattern is the same cound I not just fit a new caliper (metric later one) using the original UNF bolts? cheers Quote Link to comment Share on other sites More sharing options...
jad Posted May 22, 2010 Share Posted May 22, 2010 you can do. there is a small amoutn of play in the holes but nothing major. mines has been like it for a year or so with no problems Quote Link to comment Share on other sites More sharing options...
jad Posted May 22, 2010 Share Posted May 22, 2010 actually i cant remember which way roung i did it. obviously the smaller bolt went through the bigger hole!. I put a H reg disco axle on a G reg defender Quote Link to comment Share on other sites More sharing options...
Paul Woodward Posted May 22, 2010 Share Posted May 22, 2010 you can do. there is a small amoutn of play in the holes but nothing major. mines has been like it for a year or so with no problems In my opinion this is not safe. Please dont do it. This is the brakes!! I used These discs.. With These calipers. ST1266 & ST1267. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted May 22, 2010 Share Posted May 22, 2010 What year are the axle components on your 90, Paul ? Mo Quote Link to comment Share on other sites More sharing options...
Paul Woodward Posted May 24, 2010 Share Posted May 24, 2010 Mo, The case and hubs are Range Rover 3.9, 1990 with abs. The swivels are Disco (taper bearings top and bottom). The stub axles, wheel hubs and cv's are from a 1984 90. My hubs have the 7/16 UNF caliper bolts so I have made stepped bolts to suit the 12mm caliper holes. You could use the RR calipers of course but they have 2 inlet pipes. The pistons and pads are also smaller than the 110/130 calipers. Paul. Quote Link to comment Share on other sites More sharing options...
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