RR diff prefix?

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Gary H
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RR diff prefix?

#1 Post by Gary H » Tue Mar 22, 2016 7:08 pm

Hello everyone..I'm scratching my head here

so I hope someone can explain why I'd have 'RR' as a prefix stamped into the rear diff?
It's supposedly from a late 2500TC, I checked canleys list and there isn't anything that relates to that?

Sure someone will know...
The Mutant PAU 856R 2500s with a twist
2500s estate causes a scene and
the next headache is ready and waiting..
GAR 317C mk1 2000 'son of bomb'

johnnydog
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Re: RR diff prefix?

#2 Post by johnnydog » Tue Mar 22, 2016 9:14 pm

Has it got the prefix it ought to have, MG, near to it? Just wondering whether the RR has been stamped on it at a later date maybe, by a company if it's been overhauled or re conditioned?
Register Member no. 1596

1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red

Gary H
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Re: RR diff prefix?

#3 Post by Gary H » Tue Mar 22, 2016 9:42 pm

I did look but can't see any other numbers
The Mutant PAU 856R 2500s with a twist
2500s estate causes a scene and
the next headache is ready and waiting..
GAR 317C mk1 2000 'son of bomb'

Gary H
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Re: RR diff prefix?

#4 Post by Gary H » Tue Mar 22, 2016 9:46 pm

I'm trying to upload a few pictures.
The Mutant PAU 856R 2500s with a twist
2500s estate causes a scene and
the next headache is ready and waiting..
GAR 317C mk1 2000 'son of bomb'

Lloydpiestate
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Re: RR diff prefix?

#5 Post by Lloydpiestate » Wed Mar 23, 2016 7:15 pm

hi gary,

ive got two nos diffs here that were rebuilt by the bl factory back in the day, and i'm sure they both start with rr , will need to double check next time im in the lock up, but 99% sure.

so if im right, you have a rebuilt unit, using old school proper machined internal components.

Lloydpiestate
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Re: RR diff prefix?

#6 Post by Lloydpiestate » Wed Mar 23, 2016 7:18 pm

forgot to ask, is the number stamped on the top of the casing, rather that where it normally is ?

Gary H
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Re: RR diff prefix?

#7 Post by Gary H » Wed Mar 23, 2016 7:38 pm

Hi lloyd, that'd be great if you could have a look at yours mate.
I can't upload photos, not sure why?

My dad (more knowledgable, more experience on triumphs then me) reckons it's not in the usual place, it's stamped parallel to the mating edge of where the cover bolts on on the upper side of the diff.
The Mutant PAU 856R 2500s with a twist
2500s estate causes a scene and
the next headache is ready and waiting..
GAR 317C mk1 2000 'son of bomb'

Lloydpiestate
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Re: RR diff prefix?

#8 Post by Lloydpiestate » Thu Mar 24, 2016 5:36 pm

your pics are prob to big gary, you need to resize them to 640x480 i think it is.

yep, with the number being stamped where it is, you have a rebuilt factory diff from back in the day, i wonder how many miles it has on it ?

Gary H
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Re: RR diff prefix?

#9 Post by Gary H » Thu Mar 24, 2016 6:54 pm

I really couldn't guess?

it's turns real nice, no sign of any oil leaks and there isn't any play in it at all.
Just looks terrible because of how it's been stored.

Out of interest, what sort of value would you put on it?
The Mutant PAU 856R 2500s with a twist
2500s estate causes a scene and
the next headache is ready and waiting..
GAR 317C mk1 2000 'son of bomb'

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