Reply With QuoteIsn't one set a different thickness from the other, hence the different axle end bushes.
Super Moderator
Does anyone know what the actual differences are between the various front radius arms?
The early Range Rover pre 1985 have different part numbers for chassis and axle housing bushes.
Later models use the same chassis bushes (NTC4514) but have different axle assembly bushes and at least 1 model of RRc radius arm (NTC7331) are used on Defender.
Most importantly can you use pre-1985 radius arms (NRC4096) on a 90/110 or are there reasons that in inadvisable?
Diana
You won't find me on: faceplant; Scipe; Infragam; LumpedIn; ShapCnat or Twitting. I'm just not that interesting.
OldBushie
Isn't one set a different thickness from the other, hence the different axle end bushes.
Scott
Super Moderator
Scott
Is it the bushes that are thicker (larger outside diameter bush) or is it that there is more metal in the arm (wider) and so the early arms are loose in the the receiver part of the late axle assembly or vice versa?
Diana
You won't find me on: faceplant; Scipe; Infragam; LumpedIn; ShapCnat or Twitting. I'm just not that interesting.
Swaggie
I believe the "early" bushes/rad arms are narrower and the later are wider. So AFAIK you need to use the rad arms which suit the front axle.Originally Posted by Lotz-A-Landies
Scott
Is it the bushes that are thicker (larger outside diameter bush) or is it that there is more metal in the arm (wider) and so the early arms are loose in the the receiver part of the late axle assembly or vice versa?
Diana
I thought there were only 2 types of radius arm? (though there may be imperial and metric thread versions of the early (narrow) type?)
Wizard
Supporteryeah, its the width,
Check here for more of a description:
Range Rover Classic - 1 of 6 - Qt Services
Regards,
Jon
Super Moderator
without going into Disco 1, I did a search of my various manuals (don't have the numbers here at work though).
There is one number for the pre 1985 radius arms so assume imperial.
In the post 85 models there are at least 2 more types (the one with anti-roll bars common to Defender) then 3 more with the later classics with and without air suspension, although the bushes seem to do repeat performances.
Like the early Rangy the early 110 has an orphan number for the radius arms.
Will have to do some measuring.
You won't find me on: faceplant; Scipe; Infragam; LumpedIn; ShapCnat or Twitting. I'm just not that interesting.
OldBushie
I know there is
Small pin, narrow bushes, early classic
Big pin, narrow bushes, County
Big pin, wide bushes, Late classic
I have all 3 here now
Super Moderator
That's good info! Thanks
So, if I have a pair of early classic arms and a County assembly, will the County bushes fit into the classic arms?
You won't find me on: faceplant; Scipe; Infragam; LumpedIn; ShapCnat or Twitting. I'm just not that interesting.
OldBushie
OD is the same regardless of bush width, this I know and there is 2 bush widths, so if you have narrow bush RR arms pre 85...ish and county front diff, with narrow bush's then yes, I'm not sure when the county went to the wide bush though? 2 here are pre 86 ish and are narrow
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