[TR] [6pack] Rear end clunk

[Cliff Hansen]

Low-speed “clunk” in my TR4A IRS turned out to be worn splines in the axle shafts. I repacked the splines with grease to get by for a while, I’ll fix it properly when I decide it bothers me enough. Why Triumph didn’t put a grease fitting on the sliding joint is a mystery to me.

Cliff


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From: Greg Lemon<mailto:grglmn at gmail.com>
Sent: Thursday, January 27, 2022 8:29 AM
To: Alex & Janet Thomson<mailto:aljlthomson at charter.net>; Triumphs<mailto:triumphs at autox.team.net>
Subject: Re: [TR] [6pack] Rear end clunk

I chased after a "rear end" clunk for years.  Decided it was in the differential, and decided to replace it with a Nissan R200 limited slip after replacing u-joints and checking mounts many times.  When I was installing the differential and new, shortened drive shaft I discovered one of the transmission mount bolts had gone missing.

If you are not finding it, may be worth expanding your search, however, the only when cold thing is a bit of a head scratcher.

BTW, very glad I did the diff swap, even though it was not the cause of the clunk, car is much quieter, especially  with the top up.

Greg Lemon
TR250

On Thu, Jan 27, 2022, 9:10 AM Alex & Janet Thomson <aljlthomson at charter.net<mailto:aljlthomson at charter.net>> wrote:
Don’t rule out worn driveshaft U-joints or worn/loose mounting bushings on the differential itself.

Alex Thomson

From: 6pack [mailto:6pack-bounces at autox.team.net<mailto:6pack-bounces at autox.team.net>] On Behalf Of otral at juno.com<mailto:otral at juno.com>
Sent: Thursday, January 27, 2022 9:43 AM
To: 6pack at autox.team.net<mailto:6pack at autox.team.net>
Subject: [6pack] Rear end clunk

Twenty years of rear end clunk when I put it in reverse with cold engine and I'm tired of it. But as soon as the engine warms up it disappears and i dismiss it. Do I bite the bullet and get it checked out? I'm sure my mechanic will say get it fixed. And how much do you think a repaired rear end will cost me?

Al in CT with 74 French Blue


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