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Gearbox with no name!


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Hi

Just wondering if anyone can help with a little problem, I acquired a spare cp engine and gearbox with a tr6  I bought and try as I may - I cannot find any identification stamps anywhere on the casing there are none and there is absolutely no evedence of ever being one or one being removed. 

There is a date mark on the right hand side that looks like it was scored into the casting sand reading 19/2/75 and that's all apart from the usual raised casting numbers....... Any ideas would be gratefully appreciated. 

Graham 

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Graham - I've seen that or something very similar on a Stag box previously but it still had numbering stamped onto the clutch cross shaft boss.

Can you supply a photo of the whole box? Does it have an OD unit attached - if so what are the serial numbers of that?

Cheers

Rich 

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Thanks for replying Rich & Mike here's the side I would expect the I D. to be but nothing at all anywhere on the casings! It's a bit of a mystery to me. The internal are like new which had me wondering if it could have been a replacement box supplied by Triumph /Leyland?? 

Regards 

Graham 

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Well it’s got a TR cross shaft and a reversing light switch so with its age, it would appear to be a TR6

A late TR 6 box of that vintage should have a higher first gear than earlier ones - I think that means it should have 32 teeth on it 

It could still be an ex stag box - most oh the ones I’ve seen are stamped on the off side boss not near side like most others - is there anything there?

must go as off to Goodwood!

cheers

Rich

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Hi guys, 

No stampings on the other side either... Or anywhere else so I will count the gear teeth to see if this can shed some light! 

Hope thee weather holds good for Goodwood Rich

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Hi - just one more thought - I take it the input shaft is 1.25” tr one and not the 1” saloon one - have you got a pic of it?

Goodwood yesterday hot and busy! Today even more so!!

cheers

Rich

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Hi Rich 

Yes it's definitely 1.25" splined shaft with what looks like very little use as most of the marks you can see are storage marks really, so maybe it is a new/recon factory unit? 

I must get round to counting the gear teeth! 

Graham 

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On 7/2/2019 at 9:30 PM, racey said:

Hi

Just wondering if anyone can help with a little problem, I acquired a spare cp engine and gearbox with a tr6  I bought and try as I may - I cannot find any identification stamps anywhere on the casing there are none and there is absolutely no evedence of ever being one or one being removed. 

There is a date mark on the right hand side that looks like it was scored into the casting sand reading 19/2/75 and that's all apart from the usual raised casting numbers....... Any ideas would be gratefully appreciated. 

Graham 

DSC_2871.JPG

My suspicions are that the casing was supplied as a spare only to replace a damaged one with the internals coming from else where! That would explain why there is no stamps on the casing which are only put on compete units.

Bruce.

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My tranny has a similar casting date (“25/3/75”, IIRC) in the same location (the handwriting’s different, though :)) Since it’s in the car, I can’t see if there are any other stamps. I assumed it was standard, and that the ‘75 tranny was further evidence of the Frankenstein nature of my car (a ‘72, and the tranny has an A-type O/D)

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On 7/4/2019 at 10:26 AM, racey said:

Hi guys, 

No stampings on the other side either... Or anywhere else so I will count the gear teeth to see if this can shed some light! 

Hope thee weather holds good for Goodwood Rich

DSC_2883.JPG

If there is any number ID stamping then its on the rear of the left hand side boss for the cross shaft.

Stuart.

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Thanks Stuart, I've scanned every inch of the outer casings and absolutely nothing what so ever - totally unstamped

Graham 

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