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rehab1964
PostPosted: Fri Apr 02, 2010 4:45 pm 
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I've got a 1275 in the shed which i think was from a 1275LS engine number 12H169 - outputs are pot joints, what diff ration would you expect to be in this?

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drmini in aust
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PostPosted: Fri Apr 02, 2010 4:54 pm 
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3.44 is my bet. :wink:

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VulcanBB18
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PostPosted: Fri Apr 02, 2010 5:00 pm 
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+1 on the 3.44 :wink:

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rehab1964
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PostPosted: Fri Apr 02, 2010 5:03 pm 
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even with the 12" wheels?

would be great if it is, would solve the ms plum problem 3.44 and pot joints ready to go

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'62 Morris 850 (Marion)
'65 Mini Delux - sleeper 1275/S discs (Ms Plum)
'69 Vanden Plas Princess 1300
'71 Wolseley 1300
'74 Austin 1300 Countryman
'94 XJ6 Sport 3.2
'04 Rover 75 CDTi
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Morris 1100
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PostPosted: Fri Apr 02, 2010 5:05 pm 
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rehab1964 wrote:
even with the 12" wheels?

would be great if it is, would solve the ms plum problem 3.44 and pot joints ready to go

The 12" tyres fitted to the 1275LS were only about ΒΌ" taller than the 10" tyres fitted to other Minis.
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rehab1964
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PostPosted: Fri Apr 02, 2010 5:09 pm 
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of course, I should have remembered that - satan's roller skate is on 12's but has a 10 for a spare

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'62 Morris 850 (Marion)
'65 Mini Delux - sleeper 1275/S discs (Ms Plum)
'69 Vanden Plas Princess 1300
'71 Wolseley 1300
'74 Austin 1300 Countryman
'94 XJ6 Sport 3.2
'04 Rover 75 CDTi
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Monaco
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PostPosted: Fri Apr 02, 2010 6:22 pm 
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Both the 1275LS's I owned had 3.44 diff's, 12H could be a late Moke Cali motor too though!
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Morris 1100
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PostPosted: Fri Apr 02, 2010 6:47 pm 
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12H can be anything! It is the code after that that says what the motor was fitted to.
The 1275LS had the code 12H902.
The 12H169 was fitted to the Morris 1100S Automatic. :wink:
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drmini in aust
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PostPosted: Fri Apr 02, 2010 6:55 pm 
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Oops my bad- yes M1100 is right again, 1100S auto, I have a 12H169 doorstop in the corner! :P
Count the pinion & crownwheel teeth, to be sure, to be sure...

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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. :mrgreen:
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rehab1964
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PostPosted: Fri Apr 02, 2010 7:44 pm 
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it's definately on a rod change gearbox, I bought it out of the car, was told it had been in a NMP special............

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'62 Morris 850 (Marion)
'65 Mini Delux - sleeper 1275/S discs (Ms Plum)
'69 Vanden Plas Princess 1300
'71 Wolseley 1300
'74 Austin 1300 Countryman
'94 XJ6 Sport 3.2
'04 Rover 75 CDTi
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drmini in aust
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PostPosted: Fri Apr 02, 2010 8:05 pm 
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If it's taken out of a sedan it's probably a 3.44. But if it's out of a Moke, most likely it's got a 4.13 or 4.26 in it.

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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. :mrgreen:
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GT mowog
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PostPosted: Fri Apr 02, 2010 8:14 pm 
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drmini in aust wrote:
If it's taken out of a sedan it's probably a 3.44. But if it's out of a Moke, most likely it's got a 4.13 or 4.26 in it.


Big wheel Mokes only came with 4.26 and a very small few (of the last Oz) came with 4.33 :wink:

But, as the doc suggests, it could be anything (especially since it appears to have been put together by someone other than the factory) so you'd be best to take the end cover off and count teeth....

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drmini in aust
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PostPosted: Fri Apr 02, 2010 8:17 pm 
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GT mowog wrote:
drmini in aust wrote:
If it's taken out of a sedan it's probably a 3.44. But if it's out of a Moke, most likely it's got a 4.13 or 4.26 in it.


Big wheel Mokes only came with 4.26 and a very small few (of the last Oz) came with 4.33 :wink:

Either of which are useless in a Mini. For road work, anyway. :wink:

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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. :mrgreen:
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