Hi Folks,
Conveniently my Dad's 'E' reg Granada 2.9i has just given up the ghost so he's letting me help myself to it. But this has led to a couple of
questions:
1. Anyone know if it's possibly LSD? It's the Ghia model if it helps?
2. I was under the impression that the Granada was about 1" wider than the Sierra. But at Exeter the bloke on the DAX stand said that the Sierra and
Granada rear axles were actually the same length but the Granada had the shafts pulled out of the diff' half an inch more each side. This sounds like
rubbish but if not would be very useful!
Any info greatfully received!
Thanks,
James
The Haynes manual for the Granada (B to M) mentions that some model were fitted with viscous LSD, but it sounds like a special order option. Easy to
test, though, just jack the car up in the middle so both wheels are off the ground. Put car in neutral. Turn one, if the other goes the same way then
LSD, if it goes the other way then not LSD (I know you knew that, James, but in case anyone else is reading this)
John
John
James acording to my data book the granny is an inch wider ,as there is some tollerence in the sliding joints he could be right,ps got your oval
here.
quote:
Originally posted by interestedparty
The Haynes manual for the Granada (B to M) mentions that some model were fitted with viscous LSD, but it sounds like a special order option. Easy to test, though, just jack the car up in the middle so both wheels are off the ground. Put car in neutral. Turn one, if the other goes the same way then LSD, if it goes the other way then not LSD (I know you knew that, James, but in case anyone else is reading this)
John
John
my donor was a 2.4 version of your dads car - same engine, different bore or whatever.
As conrod says, there is a fair bitta float in the inner CV joints.
My car did not have a limited slip diff. Accoring to the manual that came with the car, the limited slip was an option, and was alos fitted to some
2.0 auto cars.
atb
steve
Thanks for the replies everyone.
I had a nasty feeling I was gonna have to not be lazy for once and jack it up!
Viper, interesting thought about it being too stiff for a car that doesn't weigh 1.5tonnes!
InterestedParty, something I did actually know for once!
What I did remember last night was that the Grandad does of course have five stud while my Sierra fronts have four stud! Yes, I could use the Grandad
fronts (although they're a little heavier I'd guess) so as to match but the problem then is that the only compatible PCD wheels are off a Mercedes or
something! 
Has anyone successfully converted a Granada 5 stud to Sierra 4 stud?
Thanks,
James
The Granada and Sierra axles are the same. The V6 has a larger (wider) diff housing the same as escort and sierra cossy's. I once bought a complete
granada v6 2.9i (not LSD!) axle and swapped the hubs, disks, caliper's & drive shafts to my robin hood which had a 1600 Sierra cross member thing,
fitted with a Sierra 2Li Diff - Confused ?.
I Imagine things will be less complicated in Locost land, I presume you only need the diff, shafts and hubs - no problems. You may have to mod the
chassis to accept the v6 Diff or swap the diff for a sierra one, the bolt on drive shaft's actually are only held into the diff by a circlip on the
end of the spines inside the diff so you can can use the granny shafts with most sierra 1.6/1.8/2.0 diff's.
As for converting to 4 stud - all you have to do is get hold of a pair of XR4 ( or any late model sierra with ABS - e.g. 2L GLS ) rear drive flanges (
the bit that holds the studs ) these are a straight swap for the 5 stud ones. Oh and you need the matching disks / drums too !
the 4x4 v6 diff's pickup points are the same width as all the non lo-bro diffs..
For what it's worth here's what [I think] I know about Sierra/Granny diffs after piecing together everything I've heard/cross referenced/researched.
Mainly from Haynes manuals, Ford parts places and websites.
There are two sizes off Sierra/Granny diff - 7" and 7.5" - the measurement is either the diameter of the crownwheel (according to Haynes) or some
exterior feature like one of the mounts (according to other people) - not sure, maybe it's both. All Sierras except 2WD Cossies have the 7" diff, as
well as 1.8 and some 2.0 Grannies. Some 2.0 Grannies (dunno if its DOHC ones or just later ones), V6 Grannies and 2WD Cossies have the 7.5" diff.
The 7.5" diff is a bit bigger, heavier and beefier and takes a bit more oil.
There is a LSD version of both size diffs. 7" LSD was only fitted to 4x4s (Sierras, Scorps and Cossies), and the 7.5" LSD was fitted to V6 Scorpios
and all 2WD Cossies.
So James, you have a 7.5" diff and it most likely isn't an LSD (unless it was an option for a V6 non-scorp Granny). It's bigger than a Sierra diff
but I'm not sure if the mounting points are different (maybe you could measure them and i can add that to the diff knowledge part of my brain). The 7
and 7.5 mounting points might well be the same cos I've heard a lot about people (mainly Dax Rush owners) using Cossie diffs instead of normal Sierra
7" diffs. Either way it probably doesn't matter for you cos you're building your own chassis.
I think all driveshafts are theoretically interchangable at the diff (cos like B@man said you can remove the flange of the Lobro type ones) and Sierra
and Granny are the same length. Lobro shafts are thicker than tripode and 2WD Cossie Lobro ones are even thicker (and have bigger flanges).
What happens hub-side I have never bothered looking into, although I have heard swapping 4 for 5 stud is as easy as that.
As for putting one in a Locost, the cynical might argue a non-LSD 7.5" diff is the least desirable of all cos it's just a lardy version of a normal
Sierra diff, and you dont really need the extra strength - what you really want is a 4x4 7" LSD. But then the size/weight difference probably isn't
that drastic, beggars can't be choosers, etc etc...
Liam
[Edited on 23/11/02 by Liam]
as for changing 5 stud to 4 stud,the flange is detachable,if the drive shafts are the same the flanges should be inter changable.anyone want to let us
know?
I really suggest you boys building Sierra based kits join up to the xr owners club forum (Don't need to join the club to get access to the forum but
you do have to join the forum to view posts and info). The boys on there know the whole drivetrain inside out (Dojj springs to mind)as well as
granada/cosworth running gear too - Theres alot of parts swapping going on regularly as well as 'reference' sections from threads that have thought of
been useful as a FAQ type.
Go have a look they don't bite... honst 
Cheers
G
quote:
Originally posted by Mr G
I really suggest you boys building Sierra based kits join up to the xr owners club forum
there are two diff sizes, one is either 7or 7.5 and the other is a 9inch, the nine inch is fitted to the v6 grannies and cossies.
I've seen 7 inches. I've seen 7.5 inches. But I have never seen nine inches.
Well, only on video
Thanks for all the info everyone- always nice to get lots of useful replies to a question!
Let me expand slightly- I already have a diff/shafts etc. from a non-ABS 2.0 Sierra. It's just that I want rear discs!
B@man, are you saying I can't replace the Grandad drive flange for the Sierra one without having to replace the discs aswell?
Would be a pity if that was the case as the only reason I'm thinking of using this diff' is for the disc brakes!!!
Thanks,
James
James, the calipers are the same, but the discs will have five holes in them, instead of the four required!
(But you knew that already, didnt you?)
[Edited on 28/11/02 by Stu16v]