| Author |
 Topic  |
|
|
KJ1592
United Kingdom
451 Posts |
 Posted - 19/09/2014 : 16:07:07
|
I've recently purchased a quantity of MMM parts and amongst them is the axle shown below. It looks like P type but appears to be fitted with a 6 bolt, 2-star differential. The ratio is 8:43. Maybe someone has fitted a Morris diff to the P type axle? I've only ever owned M & D types so this is beyond my level of knowledge. Any information would be much appreciated. Thanks Ian.
|
|
|
george
United Kingdom
862 Posts |
Posted - 19/09/2014 : 16:15:30
|
| The diff appears to be a morris 8, which is a good strong unit. Geoff ps what is the distance between the brake backplates , it may be N type |
Edited by - george on 19/09/2014 16:23:03 |
 |
|
|
KJ1592
United Kingdom
451 Posts |
Posted - 19/09/2014 : 16:43:04
|
| Thanks Geoff. The distance between the top edge of the back plates is 3 feet exactly if that helps. Ian. |
|
|
|
george
United Kingdom
862 Posts |
Posted - 19/09/2014 : 17:36:14
|
| Ian ,it is too narrow for N then . Geoff |
|
|
|
Richard Hardy
United Kingdom
2159 Posts |
Posted - 19/09/2014 : 21:57:28
|
This looks like a P type diff with Morris 8 CW7P plus diff carrier. If it were a J type banjo with 12 inch brakes added then the rear cover would have the oil filler spout i it.
Rich
Vintage MG Parts |
|
|
|
F0355
South Africa
298 Posts |
Posted - 21/09/2014 : 18:40:29
|
There's usaually a number stamping on the top of the hump that should reveal more of which MG it originated from. A 165 stamp if I recall was a P Type product code and134 as in the pic below was an N Type product code with this being from an early N Type.
Peter Steyn
Johannesburg, RSA
|
Edited by - F0355 on 21/09/2014 18:50:53 |
|
|
|
powerplus
United Kingdom
599 Posts |
Posted - 21/09/2014 : 20:49:16
|
On an N rear axle the spring mounting platforms are cast into the axle ends. This distinguishing feature is missing from the axle in question which makes its probability to be P type.
Powerplus |
|
|
|
David Griffiths
United Kingdom
47 Posts |
Posted - 22/09/2014 : 11:14:38
|
The standard P diff was 8/43 ratio and the Morris 8 was 7/37, thats the one that has stronger teeth.
David |
|
|
|
Bruce Sutherland
United Kingdom
1564 Posts |
Posted - 22/09/2014 : 11:39:33
|
Alan,
My PB rear axle has spring mounting brackets/platforms integral with the axle casting, also the axle number matches that in the chassis file which suggests it's original - see below:
Bruce. (PB0564) |
|
|
|
powerplus
United Kingdom
599 Posts |
Posted - 22/09/2014 : 12:40:36
|
Bruce,
On the P type (and others) there is a separate spring platform which fits on the underside of the axle end casting. This separate casting is secured by two U bolts which in turn secure the axle to the road spring. On the N the axle end casting includes the spring platform as one integral unit which is bolted direct to the springs, thus not requiring U bolts.
Powerplus. |
|
|
|
SV4670
United Kingdom
302 Posts |
Posted - 22/09/2014 : 13:15:05
|
| The comment about product codes interested me; I have an M type axle and I seem to remember it has 130 and some other number stamped on it. Was 130 the product code for the M type? |
Edited by - SV4670 on 22/09/2014 13:16:36 |
|
|
|
sam christie
United Kingdom
3101 Posts |
Posted - 23/09/2014 : 09:28:55
|
Derek (SV4670) , I do not believe the M-type was included in the 'product code' system which I think began a little later.
This list is a work in progress but you will notice the number allocations progress chronologically suggesting that 130 (if it was ever issued as part of this numbering system) would not have appeared till well after the J-type entered production and M-type production had long finished.
By the way, the 'received' number for the C-type is '65' (allocated to a Wolseley Hornet Special) but I believe it should be '54' although I have the strong impression nobody cares enough to check.
Sam |
Edited by - sam christie on 23/09/2014 09:32:09 |
|
|
|
SV4670
United Kingdom
302 Posts |
Posted - 23/09/2014 : 10:51:41
|
Sam
Thanks for that. I should have checked my facts before posting; the axle actually has 310 stamped on it not 130.
This is an axle I bought as a spare, the axle on the car does not have any markings on it. I am pretty sure the marked axle came from a M type; it came with the correct brake drums, brakes shoes weights etc. |
Edited by - SV4670 on 23/09/2014 10:55:37 |
|
|
|
sam christie
United Kingdom
3101 Posts |
Posted - 23/09/2014 : 14:55:00
|
Derek, I think '310' is a serial number but '30' could be a 'model' number. The subject needs more research and the list is far from complete.
Sam |
|
|
|
Bruce Sutherland
United Kingdom
1564 Posts |
Posted - 23/09/2014 : 16:27:06
|
quote:
Originally posted by powerplus
Bruce,
On the P type (and others) there is a separate spring platform which fits on the underside of the axle end casting. This separate casting is secured by two U bolts which in turn secure the axle to the road spring. On the N the axle end casting includes the spring platform as one integral unit which is bolted direct to the springs, thus not requiring U bolts.
Powerplus.
Alan, again,
It's always helpful to have a photo to clarify what you mean - ref NB rear axle photo from the late Bob Brassington's NB:
Now I see what you mean!
Bruce. (PB0564) |
|
|
| |
Topic |
|
Forum Locked
Topic Locked
