Howdy,

I don't know what diff is in my 1200 Coupe.

So I thought the collective brains trust of the Datsun 1200 forum might be able to help me.

I'd like to get some spare axles in case I twist one but it is a bit hard when I don't know where to start.

The housing has been modified and I can't find any serial or part numbers stamped on it.

The drum brakes have been replaced by disc. So looking at what the pads fit does not help
(120Y fronts)

I have looked at the diff centres I have and they don't seem to have any helpfull info stamped on them.

What I do Know is:

stamped on the crown wheels are

Diff 1
B37:9 EBL 859
37:9 is the ratio (4.11:1) but what does the EBL 859 mean?

Diff 2
HC39:8 CJ 1323
39:8 is the ratio (4.87:1) But what does
CJ 1323 mean?

Diff 3
B35:9 CQ 626
35:9 is the ratio (3.88:1) But what does
CQ 626

One of the centres has Datsun C20 van painted on it.

What I would like to know is what it is . . .
eg H165
what other ratios are avaliable . . . .
eg 4.65:1
and what cars they where fitted in.

Not asking for much am I . . . .

Here are some photos of one of the diff centres and the diff mounted in the car.

Thanks and any help will be greatly appreciated

Cheers,

Geoff

Looks like H165. Is the ring gear diameter 165 mm?

B means B revision. HC means Hitachi C revision. A "B" carrier cannot hold "C" gearsets and vice-versa.

Hi Geoff
8 bolts around the outside and it will be a H165 diff centre. The C20 van marking is also a giveaway. The housing should be a late model ute housing so axles will be the same. It theoretically could also be a C20 vanette diff housing which are wider and would need longer axles.
Cheers
Bob

The builders nailed it!
Good trip home?
Cheers

Yeah Rob .Thanks for the hospitality and the Garage and vehicle tour.Highlight of the Gold Coast was 85mm of rain in a day.Just do not see that in Albury.
Cheers
Bob

Thanks for the help.
Now I know what to look for.

Does any one know what ratios are available?

Cheers,
Geoff

H165 Ratios are many, from 3.545 to 4.875. See H165