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Diffs, Diffs, Diffs.
Thatcher - 7/6/13 at 06:44 AM

Hi all could someone advise me how too measure a diff for its size ie 7" or 7.5"

Thanks

Tony

40inches - 7/6/13 at 07:52 AM

All the information you could want here

adithorp - 7/6/13 at 08:51 AM

Top mounting bolts are different. 7" is slotted so you can see the bolt in the middle and 7.5" isn't. Also the distance across the bolt is 7" and 7.5" I believe (although I've never measured one)

mcerd1 - 7/6/13 at 09:57 AM

quote:
Originally posted by adithorp
Top mounting bolts are different. 7" is slotted so you can see the bolt in the middle and 7.5" isn't.

^^ spot on
slotted top mount with 1 long through bolt = 7"
solid top mount with 2 tapped holes/short bolts = 7.5"


the 7" or 7.5" size is actually the size of the crown wheel inside the diff rather than the width of the mounts on the case

the 7.5" is bigger across the top mount, but not exactly 7.5" wide...

from mookaloid's archive:
diffs
diffs

[Edited on 7/6/2013 by mcerd1]

Not Anumber - 7/6/13 at 01:12 PM

Were the 7.5 " difs only used in the Granada/ Scorpios ?

mcerd1 - 7/6/13 at 06:03 PM

no both types were used in Granada's and Sierra's (depending on what was in the parts bin that day...)
my Granada donor and my spare Granada both had 7" diffs

I think the later scorpio's were all 7.5" (the ugly 95-98 ones)


[Edited on 7/6/2013 by mcerd1]