Ibex94 Posted December 28, 2008 Share Posted December 28, 2008 Hi guys, am in process of fitting shiny black refurbished axle case ('99on 24 spline) using the front radius arms from my 1988 90 only to find some commedian has changed the width of the mounting points on the new axle to ~54mm when the original axle was ~47mm. So the question is did the L/R "cone heads" decide the original arms weren't man enough and thought they'd better add some more metal or has the bush design changed? What have the rest of you done when upgrading the front axle on your trucks? Any help / advice gratefully received. Ta Rob Quote Link to comment Share on other sites More sharing options...
western Posted December 29, 2008 Share Posted December 29, 2008 Yes LR changed the size, you need the matching arms as well to fit them. Quote Link to comment Share on other sites More sharing options...
clbarclay Posted December 29, 2008 Share Posted December 29, 2008 The radius arms changed first on the RRC in 1986 to the wide type and then the defenders in 1993. Discoverys always had the wide arms. As far as I'm aware there were no strength issues with the narrow radius arms and they were just made wider to fit wider/stiffer bushes. Quote Link to comment Share on other sites More sharing options...
lrfarmer Posted December 29, 2008 Share Posted December 29, 2008 the only good thing it there are loads about from broken discos and people who have put lighter or camber correction one on put a wanted on here for some localy Quote Link to comment Share on other sites More sharing options...
B reg 90 Posted December 29, 2008 Share Posted December 29, 2008 The later wider bushes will be stiffer IMHO. You will get better roll resistance with the wider bushes when cornering, but this will reduce the articluation the axle is capable of. Therefore pick the width of radius arm to suit your type of use. You could always stick a suitably sized washer either side of the thin bush to fit the wide axle casing?? Adrian Quote Link to comment Share on other sites More sharing options...
bishbosh Posted December 29, 2008 Share Posted December 29, 2008 Got some wide radius arms here with brand new superpro bushes in them if you are interested? Not too far away either..... Quote Link to comment Share on other sites More sharing options...
roybatty666 Posted December 29, 2008 Share Posted December 29, 2008 or do what I did and keep your old tube and use the new diff and hubs/swivel and shafts, you may need to knock out the 4 middle studs that hold the diff in and fit longer ons (the same length as all the other studs) as the later diff housings have thicker flanges at the 9 abd 3 o'clock edges saves getting new arms Quote Link to comment Share on other sites More sharing options...
TomG Posted December 29, 2008 Share Posted December 29, 2008 7mm difference so use the wider 54mm steel bush inserts and cut 2 x custom washers cut from 3mm plate with a hole in the middle to fit over the bush insert, these space the 47mm bush out to 53mm which is near enough for a rubber bush. Did the trick for me Quote Link to comment Share on other sites More sharing options...
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