[Healeys] differential experts

[Alan Seigrist]

That's called "Galling" ant it's usually caused by driving the car
with no oil in the diff.  Not much you can do about it, as long as you
can live with the hum, it should be ok.

On 11/14/09, S and T Miller <stmiller96 at hotmail.com> wrote:
> I know this is a tough one.  The 1960 Bugeye had a rear end HUM at highway
> speed under load.  When you let off the pedal the HUM went away.  It was
> very
> consistant- meaning it didn't change around corners and increased at higher
> speeds.  I torn apart the rear (which is a 3.9 BTW) hoping to find a screwed
> up bearing or mashed gears.  The only two things I found was light wear (in
> my
> opinion- not an expert on rears) on one side of both the crown gear and
> pinion.  When you rub a screw driver across the worn surfaces you can feel
> variations.  Is this normal wear?  Also found the inner pinion bearing cage
> had been bent slightly (probably by someone working on it before) that had
> rubbed the very top (thin edge) of the race, maybe causing the HUM when the
> bearings touched the surface under load?  Any thoughts?  Again I know it is
> tough to say without seeing it, but I took it to a local machine shop and
> they
> didn't think it looked too bad, but wasn't sure either.  Thanks, Shawn
>
> The Millers
> "British Car Nuts"
>
> 1957 Austin Healey 100-6 BN4 35299
>
> 1959 Austin Healey 100-6 BN4 77219
>
> 1964 MGB 40841
>
> 1960 Austin Healey Bugeye Sprite AN5 34351
>
> "Always drive them, but remember each drive in an antique car is a test
> drive."
>
>
>
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-- 
Sent from my mobile device

Alan

'52 A90
'53 BN1
'59 Jag Mk IX
'64 BJ8