Can anyone tell me if the gear box in my Clubman S is fully syncro and what it would have been out of originaly. It is currently sitting under a 1275.
The number on the casting is 22A1288 and is a remote change box and has inner CV joints.

I also have the following boxes and can tell what they are as there is no engine on top.
22G1128 - 4 syncro remote change from 1100 Clubman 1972 model, i think?
22G1832 - 4 syncro rod change from 1100 Clubman S 1975 model.
22G68 - 3 syncro remote change not sure what it would have been originaly but i have just taken it out of my 1972 clubman with 998 engine.

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76 1275 Leyland S

I think but am not sure it's an old 'A Type' S box, if this is right they where replaced by the 'B' type boxes because the helix angle was too big causing a lot of side load on the gears.
Personally I'd use the 22G1128 fitted with the close ratio gear set if you can get one.

this will help you
http://www.hotbricks.org.au/ and then go to the Tecjnical page..Gearboxs..and a heap of other stuff

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Stop Licking the Dog...I Don't Care Who Started It

22A1288 according to my records is an 850/998 magic wand, type b gears.
3 synchro.

As Smiffy says the 12G1128 (4 synchro remote) is a better stronger box.

Even without the close ratio Cooper S gears, (ie an Oz Mini K or early Clubby box) ratios are closer than these early boxes.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

22A1288 is the commonised 3 synchro remote box casing used on later Cooper 'S' , Mini Deluxe etc.
To the best of my knowledge this gearbox casing would have been introduced to replace the different casings used for 1275 and non 1275 motors. Hence the commonised casing.
My MK 1.5 Cooper 'S' uses this gearbox casing. It's sitting on the garage floor waiting for the C/R S/C gear set to be fitted.

Regards
RonR

Well this has got me thinking now.
This is the story on how i got my 1275 that i put into my clubman S.

I bought a 1965 Delux from a bloke that had a fully reconditioned 1275 engine and gear box in it and i transplanted them into my Clubman.
Anyway he use to have a Cooper S and he wrote it off when he rolled it a few years ago and he got a new shell. Idiot gave the compiance plate from the Cooper S to another bloke ( this guy now won't part with it, i wonder why ). He went to get the Cooper S engine rebuilt and it failed because the cylinder wall was too thin.
So i wonder if this gear box i have was out of his Cooper S ?
Not going to pull the bastard apart to find out.

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76 1275 Leyland S

By the way Miniron what do you mean by commonised casing ?

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76 1275 Leyland S

He means there was 1 casing used for the Mini Deluxe, and Cooper S, and last of the 850s.
There is a number stamped on front of box, near that cast one-let us know what it is and people here can tell you if it's a Mk1 S box, or not.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

If it's a MK 1 S box it will most probably have 12FA xxx stamped on a pad just below the starter motor.
12FA is an English engine number prefix used for, I think for MG 1100 and other non 'S' BMC 1275 twin carb engined cars. (Not 100% certain about this) My OZ Mini workshop manual gives UK built 1275 Cooper 'S' cars as using 12FA engine prefix numbers but this is incorrect as all Cooper cars, 997, 998, 970, 1071 and 1275 including OZ built 'S' cars used 9F as an engine prefix. This is the exception that proves the rule that BMC used 8, 9, 10, 12 etc to denote the engine capacity. Mini Coopers are different! The only ones that did not follow this were the UK MK 3 Cooper 'S' which I'm pretty certain used the 12H prefix, as well as the OZ Clubman GT which used 1200 for the Cooper 'S' engined cars, apart from the first 100 or so cars which used the 9FXEY prefix. (OZ built 998 cooper cars may have used an OZ engine number. 9Y??????)
By changing the diff housing during manufacture it could be either a remote box or a magic wand box but the bit that holds the gear set is the same or commonised. Prior to this there were different castings depending on the application.

Hope this explains it.
RonR

R69824 is stamped on front of box if this is any help ?

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76 1275 Leyland S