Paul -
Generally the diff will whine when it fails, rather than knock, so you
should be fine.
I'd check shock mount bolts, that's what it sounds like to me. Also
possibly U-joints, but I'd look at the shock mounts first. They need to be
TIGHT on the healey.
Alan
On Tue, Dec 14, 2010 at 6:46 AM, PG <britishcars@shaw.ca> wrote:
> Hi all,
>
>
>
> I have a knock coming from my rear end that I am trying to track down.
>
>
>
> It occurs only 50% of the time. Often when jarring the car forward such as
> when engaging the overdrive and sometimes when starting to take off.
>
>
>
> I don't believe that it is coming from the differential but can't be
> certain. When the car is on jacks and I turn the rear wheels back and
> forth,
> I do not get a Knock.
>
>
>
> The shackles are all tight.
>
>
>
> Could it be the radius arm bushings?? Or the bushes on the spring
> shackles?
>
>
>
> Thanks
>
> paul
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