[TR] [6pack] Rear end clunk

[Dave Connitt]

Hi Jeff,
I ended up replacing/upgrading my worn out TR4A IRS differential plus Richard Good rear hubs and CV style half shafts by myself. I would definitely recommend buying or borrowing a transmission jack. I picked up one from Harbor Freight for less than $100.00.
It was definitely worth it. Also look for a diff with a 3.688:1 ratio, which is fairly common. I also replaced the pinion and stub axle seals before I installed it.
Dave Connitt

Sent from my iPhone

> On Jan 27, 2022, at 12:31 PM, Jeff Nathanson <jeffn at msystech.com> wrote:
> 
> 
> Greg,
>  
> Was this an easy job to retrofit? Or did it require any modifications?
>  
> Thanks,
> Jeff N.
> ’72 TR6
>  
> From: Triumphs [mailto:triumphs-bounces at autox.team.net] On Behalf Of Greg Lemon
> Sent: Thursday, January 27, 2022 10:28 AM
> To: Alex & Janet Thomson <aljlthomson at charter.net>; Triumphs <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> 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] On Behalf Of otral at juno.com
> Sent: Thursday, January 27, 2022 9:43 AM
> To: 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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