[TR] [6pack] Rear end clunk

[Robert Rochlin]

  So I remember reading, I believe on the list, that when the ring and pinions as original from Triumph were manufactured that they were run with a compound that bedded the ring and pinion as a “set” and that this considerably reduced differential howl. I think that the thread was to the effect that the new ring and pinion sets were not “matched and thus a lot louder.
	Does anyone know (remember) if this is correct?
	Best,
	Bob
	’72 TR6

> On Jan 27, 2022, at 1:05 PM, Greg Lemon <grglmn at gmail.com> wrote:
> 
> Meant to add, everything was bolt on parts, pretty easy.  A transmission jack is a good idea, I used to horse the things up from under the car by myself, but those days are gone.  I fabricated a wooden cradle that I attached to my regular floor jack when I put mine in.
> 
> I had some tight clearances with my dual exhaust, but it is not stock.
> 
> Greg
> 
> On Thu, Jan 27, 2022, 11:27 AM Jeff Nathanson <jeffn at msystech.com <mailto: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 <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 <mailto:aljlthomson at charter.net>>; Triumphs <triumphs at autox.team.net <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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