I had an odd noise in my 4A IRS which turned out to be a slightly loose brake
mounting bolt.
As for u joints, when I bought the car the driveshaft had a bad vibration
which appeared to be bad phase alignment if the 2 halves. When I corrected
the alignment of the yokes, the vibration was unbelievably worse. The front
ujoint was demolished and had bots and pieces of the rollers inside the cups.
After that I had a very slight vibration. And I checked the other 5 ujoints.
One had a noticeable click when twisted by hand. It was also in terrible
shape. Then I really tested the others and one had the most subtle click. It
too was bad. The others seemed ok, but I replaced them anyway. It turned out
that all but one were really on bad shape.
So don't discount the possibility of bad but in my case they created a
vibration, not a noise.
-Tony
On Oct 30, 2014, at 2:00 PM, triumphs-request@autox.team.net wrote:
> Message: 3
> Date: Wed, 29 Oct 2014 12:32:49 -0700
> From: "Peter Arakelian" <peterara@msn.com>
> To: "Listers" <triumphs@autox.team.net>
> Subject: [TR] what's that noise? update
> Message-ID: <COL127-DS18F828C966412EDC0F5C09C19C0@phx.gbl>
> Content-Type: text/plain; charset="us-ascii"
>
> Want to thank all for input.
>
> I had some say it was brake noise: I checked brakes all looks well. When
I
> backed the front pads off the and flicked the metal shims it was a noise of
> similar tone, but all looked and functioned well.
>
> Some said rear hubs: I jacked up the rear end pulled & pushed, wobbled
> vertically & horizontally - no play.
>
> Some said u-joints - here it got interesting. One of the rare noises it
makes
> sometimes when it does make its tinny sound is a slight bump or knock. It
has
> also made the tinny sound most often when I pull into my driveway over the
> bump in transition from street to driveway. I do this at an angle, slowly.
> As the right rear wheels come up over the bump - noise. So I will inspect
> u-joints next.
>
> Keep all advised.
>
> Again thanks to all, if anyone thinks of more, please don't hesitate...
>
> Peter Arakelian - '71 TR6, Daily Driver
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