Commando 850 ( T ) what is it ?

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John Fontenot

John Fontenot

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850 Commando 1975
There is the typical RH4 on the head, there is also a ' T ' stamped over the opposite valve cover. Also the ' T ' is also stamped on the first lobe of the camshaft. Also I see a ' T ' on the bottom of the cylinder barrels between the cylinders. The bike is all numbers matching. What does the ' T ' stand for ?
Thanks.
 
I have the same head and barrels and would love to know what ( T ) stands for.

ELLIS
 
Have a '74 and it just rattles along. No T anywhere except the tyres.



Sorry....couldn't help myself.
 
MK III's were known to have soft cams, it could have taken down to change the cam. I have seen motors that have been stamped after rebuilds. I just thought it have been done to your motor.
 
I/we have 2 RH4 heads. Purchased from Ebay. Both have "T" stamped somewhere, I would have to look where. Perhaps it means it was built after "Tea Time" Which means they should be OK. What's a sip of tea amongst friends? As long as they weren't built on a Friday after lunch, you should be OK.
The Eagle flies on Friday, Saturday I go out to play! Stormy Monday ,SM might not be so good. Should be stamped SM
 
-----------------------------------------------------
"NORTON SERVICE RELEASE No. N.25 November 1970

Identifying marks on assemblies.
Worldwide (Trade Only)
From queries received we gather that our system of stamping a Factory identification symbol on certain assemblies (for example: the marking "X" on the top of the rear engine mounting boss) is causing some confusion.

We respectfully point out that such markings are purely a Factory Facility to enable us to keep track of any production changes without the need for stripping. Such markings will appear only for a limited time and then disappear whereas the feature may well continue. As such, we shall only make known the purpose of markings where we feel common knowledge is mutually advantageous..."
-------------------------------------------------------
 
I've got some "Ts" here and there.
I've always thought a previous owner stamped them in as recognition marks in case of theft. As that would fit in with the last owner's initial I hadn't given it any further thought until this post.
Commando 850 ( T ) what is it ?

Machine is a 750 MKIV (9th December 1971 2006**) that had been in Spain from new until 2002. It's not a UK re-builders initial though as I know that would be W and no further re-build until myself last year. Intetesting, then, that it could be a factory mark.
 
Last edited:
Dommie Nator said:
I've got some "Ts" here and there.
I've always thought a previous owner stamped them in as recognition marks in case of theft. As that would fit in with the last owner's initial I hadn't given it any further thought until this post.View attachment 13812
Machine is a 750 MKIV (9th December 1971 2006**) that had been in Spain from new until 2002. It's not a UK re-builders initial though as I know that would be W and no further re-build until myself last year. Intetesting, then, that it could be a factory mark.
Click to expand...
That T you have there is exactly the same font style on my valve cover. It seems different than the RH4 font. It must be a quality check or a certain department mark for 'their' reasons. thanks
 
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