Identify this diff ratio?

Discuss anything Morris Minor related.
Forum rules
By using this site, you agree to our rules. Please see: Terms of Use
Post Reply
mollythemoggie
Minor Fan
Posts: 124
Joined: Tue Jul 14, 2009 4:13 am
Location: Sydney, Australia
MMOC Member: No

Identify this diff ratio?

Post by mollythemoggie »

Hi I was just wondering the best way to identify what ratio a diff is I have.. It has the numbers aya7010 stamped on the saddle things with 126 on one of them and 109 on the other

Thanks very much!
Attachments
IMG_20190217_102508.jpg
IMG_20190217_102508.jpg (2.31 MiB) Viewed 2203 times
IMG_20190217_102534.jpg
IMG_20190217_102534.jpg (2.48 MiB) Viewed 2203 times
IMG_20190217_102543.jpg
IMG_20190217_102543.jpg (1.73 MiB) Viewed 2203 times
IMG_20190217_102621.jpg
IMG_20190217_102621.jpg (1.78 MiB) Viewed 2203 times
irmscher
Minor Legend
Posts: 3773
Joined: Wed Jul 14, 2010 10:53 am
Location: South Manchester
MMOC Member: Yes

Re: Identify this diff ratio?

Post by irmscher »

Count the teeth on the crown wheel and pinion.
mollythemoggie
Minor Fan
Posts: 124
Joined: Tue Jul 14, 2009 4:13 am
Location: Sydney, Australia
MMOC Member: No

Re: Identify this diff ratio?

Post by mollythemoggie »

Thanks! Its a 4.2!
RobThomas
Minor Legend
Posts: 2646
Joined: Thu May 11, 2006 10:34 am
Location: Cardiff
MMOC Member: Yes

Re: Identify this diff ratio?

Post by RobThomas »

Are you sure it is a Morris Diff? Looks like cast iron and the "AYA" code is unusual.
Cardiff, UK
philthehill
Minor Maniac
Posts: 10767
Joined: Thu Jul 19, 2012 12:05 pm
Location: Hampshire
MMOC Member: Yes

Re: Identify this diff ratio?

Post by philthehill »

May be Morris but not a Minor one.

RobThomas
Minor Legend
Posts: 2646
Joined: Thu May 11, 2006 10:34 am
Location: Cardiff
MMOC Member: Yes

Re: Identify this diff ratio?

Post by RobThomas »

ATA7034 on the main bearing caps, normally, isn't it?
Cardiff, UK
philthehill
Minor Maniac
Posts: 10767
Joined: Thu Jul 19, 2012 12:05 pm
Location: Hampshire
MMOC Member: Yes

Re: Identify this diff ratio?

Post by philthehill »

Diff details

Rob
Yes ATA7034 and alloy bearing caps.

https://www.ebay.co.uk/itm/MOWOG-REAR-D ... :rk:1:pf:0

Also note the position of the diff ratio 9/38 on the diff nose in the link above.
Attachments
img360.jpg
img360.jpg (1.55 MiB) Viewed 2145 times

RobThomas
Minor Legend
Posts: 2646
Joined: Thu May 11, 2006 10:34 am
Location: Cardiff
MMOC Member: Yes

Re: Identify this diff ratio?

Post by RobThomas »

Some AYA codes on the 1800 Landcrab, if that helps. I don't know much about RWD Austins of that period.
Cardiff, UK
tomb1963
Minor Friendly
Posts: 13
Joined: Tue Apr 14, 2020 8:00 pm
MMOC Member: Yes

Re: Identify this diff ratio?

Post by tomb1963 »

philthehill wrote: Sun Feb 17, 2019 12:06 pm Diff details

Rob
Yes ATA7034 and alloy bearing caps.

https://www.ebay.co.uk/itm/MOWOG-REAR-D ... :rk:1:pf:0

Also note the position of the diff ratio 9/38 on the diff nose in the link above.
I'm interested in the attachment for different reasons: above the information for the diff part no.s is a table related to tyre size and possibly Dunlop wheel part no.s: is it possible to publish this table in its entirety?
Post Reply