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RobbyRobb
05-11-2018, 05:08 PM
Replacing with remanufactured, suggestions on where to source?

martx-5
05-12-2018, 10:40 AM
You could try Quantum Mechanics. They do transmissions and diffs for TR6s...

https://www.quantumechanics.com/

Marvin Gruber
05-12-2018, 12:20 PM
Robby,
I have a couple good used ones. PM for info.
Marv

TomMull
05-13-2018, 07:34 PM
Something to consider:
https://www.goodparts.com/shop/index.php?categoryID=16
Tom

Sarastro
05-14-2018, 09:59 PM
Just out of curiosity--what happened to the one you need to replace? Differentials are tough, and it takes some effort to wreck one. That said, the PO of the car I'm restoring seemed able to mount that effort. Running the diff without oil was a good start.

I just rebuilt my TR4A differential (solid axle car), and the experience showed me clearly that there is no such thing as an inexpensive, good, rebuilt differential. Anyone who can do it in a day is a genius, or at least very experienced. So, the guy who rebuilds it has to be compensated for that amount of time and, of course, parts.

Now, as to where to get it-- I dunno. But be sure that whoever sells you a rebuilt one has replaced the bearings and seals, and knows how to set it up. I think I'd question the seller very closely about that. A used one might be OK, but I think it would be a good idea to open it and check at least the backlash, pinion engagement with the ring gear (with dye on the teeth--a standard operation), and make sure the bearings are OK.

TomMull
05-15-2018, 07:04 AM
Just out of curiosity--what happened to the one you need to replace? Differentials are tough, and it takes some effort to wreck one. That said, the PO of the car I'm restoring seemed able to mount that effort. Running the diff without oil was a good start.


There have been quite a few ring and pinion failures on Triumph differentials, usually without an apparent cause. Broken ring and pinions add at least $500 to the cost of rebuild or and exchange. Of course this may not be relevant to RobbyRobb's case.
Tom

Rut
05-15-2018, 09:15 AM
Robby,
Your answer is located in Florence, AL! It’s worth the trip just to meet Marv and see his vast collection, plus you get to pick his brain. I’ve bought several parts from him including an OD tranny for my MGB and it works as advertised and I wouldn’t hesitate to buy a TR diff. Put your shopping list together because he has everything...
Rut

Sarastro
05-15-2018, 01:49 PM
Tom, interesting about the ring and pinion failures in TR differentials. I hadn't heard that. The problem with mine was not a ring and pinion failure, but the thing had quite a bit of rust on the gears. Almost no oil in the differential, and I suppose the little remaining oil had oxidized and become corrosive.

I'd love to see Marvin's layout, but the chances that I will find my way to Alabama are virtually zero. I bought my replacement ring and pinion from him, and it was a nice part in good shape.

Popeye
05-17-2018, 09:12 AM
In addition to the above suggestions (Marv seems to be well stocked!), Team Triumph (near Cleveland, OH) sells lots of stuff. Perhaps a call to Macy's Garage, or TRF; they may have some used ones laying around to sell.

Got_All_4
05-20-2018, 12:03 AM
Team Triumph # 330 392-7176