Let me please make it clear that I am not discussing the early BN1
spiral bevel 4 stud rear axle.
The later BN1s and all BN2s had the BMC axles that were hypoid 5 stud.
The later BN1 versions had a filler plug on the front nose of the
'pumpkin' and incidentally R.H. threads on both ends of the casing that
held the hubs in place. The BN2 version had the filler on the rear of
the casing and handed nuts holding the hubs in place. In most respects
you could fit either 'pumpkin' to either case but you could end up with
two fillers or none depending on the selection
The same Design Alteration Note dated 26/5/1955 also covered the Morris
Six, Wolseley 6/90, Austin BS4 (A90 Westminster), Riley 2= litre and
half ton van.
Therefore if you had a pumpkin from a Wolseley 6/110 it is likely to be
without a filler on the neck because I believe that there was no change
from the Wolseley 6/90 to the 6?100 other than perhaps the gear ratio.
>I've been under the misapprehension (apparently) that the way I ended
>up with 2 BN1s with no filler for the rear axle was that later diff
>centres (with no filler on the "pumpkin") had been put into old type
>casings (with no filler on casing). I know of 2 other cars in the
>Queensland club in a similar situation. Both mine are 3.54 diffs, one
>of which I believe is from a Wolseley 6/110. Any ideas?
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