Has anyone got any info on how to use the granada diff and shafts in a locost chassis? I have a cosworth scorpio running gear and it seems a shame to not use it. I have seen some diagrams of the setup used for a sierra rear end are they in any way similar?
quote:
Originally posted by jq1
Has anyone got any info on how to use the granada diff and shafts in a locost chassis? I have a cosworth scorpio running gear and it seems a shame to not use it. I have seen some diagrams of the setup used for a sierra rear end are they in any way similar?
I'm using a Granada Scorpio diff, hubs, brakes and shortened drive shafts. They came from a '92 2.9 V6 (not Cosworth) and appear identical
to those fitted to disc-draked Sierras - in fact they must be as they're now fitted to a Stuart Taylor IRS chassis which was designed around
Sierra components.
Hope this helps,
Eddy
in my view the sierra is the granada with a smaller body or vice versa for running gear purposes.
The granada always had disk brakes, and is my strong suspicion that like granada, all disk rear cars have the long torx bolted joints.
If these are the earlier T40 bolts, they are bastards. They need a lot of torque to get them out after a bit of corrosion and the T40 cant take the
torque. I went thro 3 torx T40 half inch drive heads.
Its best to grind the top off the subborn ones and screw the exposed remaining stud out with a pair of mole grips.
atb
steve
[Edited on 24/4/03 by stephen_gusterson]
I'm currently trying to combine a Granny and Sierra back end to build my car (following advice from Grant at Luego). On the car I've just
stripped (2.8i v6 Auto) the diff is the same as the Sierra one I already had but the drive shafts are too long for the standard design (and as
mentioned, I couldn't get the torx bolts undone)
Anyway, my plan is to remove the bearing carriers from the Granada and swap them onto my existing Sierra shafts to convert them to disc brakes. So
far it appears to be possible but I'm yet to actually bolt it all up. Will let you know...!
It looks as if the ends that go into the diff are identical on both sets of shafts so with any luck you will stil be able to use your Cossie diff.
A final point - it was suggested that all Granny's came with LSDs. This was not the case with the one I have!
Chris
[Edited on 24/4/03 by ChrisW]
Thanks for the help . I have taken apart the granada rear end and yes the torx bolts are a nightmare. I have decided to go ahead with the design but
I have a few questions.?
Does the fact that the granada is one inch wider really matter? Is it just a case of refabrication of the wisbones?
are there any other calipers I could use as the ones I have are antilock and ver heavy.
Thanks for the help
I'm sure people will correct me but can't you just use sierra driveshafts, as these should be shorter than the granada ones?? and I presume
will fit as the diff is the same?
Thought about sierra calipers? not all rear disc sierra's were abs were they? also may depend on the uprights I guess, mounting brackets etc.
Andrew.
quote:
Originally posted by ChrisW
Anyway, my plan is to remove the bearing carriers from the Granada and swap them onto my existing Sierra shafts to convert them to disc brakes. So far it appears to be possible but I'm yet to actually bolt it all up. Will let you know...!
<snip>
I would have to agree with james, sell the granada back end and buy a sierra back end, or source one from a scrappy.
I found someone on this forum who sold me a sierra disc brakes rear end, straight off a car (needs cleaning up) for £25!
As James mentioned, an xr4x4 rear end is even better as it has an LSD.
Andrew.
James, Ned - why sell the Granada back end and buy a Sierra one? They are essentially the same, and it's not easy to find a disc-braked Sierra.
If the only problem is the driveshaft length it's hardly insurmountable - ST Motorsport can shorten it for you at any rate.
My Granada donor was fitted with ABS, but the calipers themselves are identical to disc-braked (non-Cossy) Sierras. The ABS system sensors plug into
holes on the uprights and sense fine "teeth" on the outer driveshaft (the splined part that passes through hub bearings). You can just junk
the sensors, plumb the calipers in as normal and there's no problem.
As for 4-stud or 5-stud, you can just swap the drive flanges from a Sierra onto the Granada drive shaft splined ends - it's a straight swap with
no mods.
Here's a picture of a Granada hub carrier bolted onto my upright, with a Sierra
4-stud flange. The large nut retains the splined driveshaft end in place, tho' in this photo the outer CV joint and shaft itself are removed.
Here's another photo from a different angle.
Feel free to mail me for more photos, measurements etc.
Cheers,
Eddy
Fair comment eddy, out of curiosity do you know how much it would cost to get a pair of driveshafts shortened?
I just thought having a complete sierra disc back end without bespoke/modified parts might make it easier to maintain if replacements are ever
required....
I also thought it might work out cheaper than fiddling around with shortening drive shafts etc etc.
My answer isn't by any means definitive, just my opinion from my experience.
Andrew.
why not just get a pair of xr4 shafts and be done with it sod going to the expense and grief of having them shortened and balanced
I hope this is not to stupid a question but why must the driveshafts be shortened?
because (if you read the previous page you'd know that) granada's have a 1" wider track than a sierra.
I've always been fairly sure that Granada and Sierra shafts are exactly the same length. The extra half inch per shaft is most likely taken up
in the movement of the cv's which is about 40mm per shaft. I think that's much more likely than the idea that ford bothered making
1/2" longer shafts for the granny. I'd really like to know for sure though - i.e. have sierra and granny shafts in my hands at the same
time, to put this to rest.
Not all Granny's have LSD's - only 24V have them as standard if memory serves. You'll almost definately have the 7.5" LSD in your
24V scorp - same as the sierra cossie but probably with the standard sized diff flanges and driveshafts.
The extra 1" (if it really is in longer driveshafts) only matters if you're buying a pre made chassis based around sierra parts. If
you're making your own chassis/suspension then id doesn't matter at all whether the driveshafts are longer or not.
If you are buying a chassis then most of them do take the 7.5" diff (but check with the manufacturer) but you may need to change to sierra
driveshafts if the granny ones are too long (which they probably arent).
Hope that helps,
Liam (using XR4x4 back axle - and front axle =) )
anyone got granny/sierra drive shafts to measure them for us and comment??
I'll take the cv joints off both ends of one of my shafts and get the exact shaft length. It'd be handy to clear this up and see
what's what.
Liam
ned,ive got a pair of seirra shafts looking for a home,mail me if u want to be their new owner
thanks conrodkid for the offer though I do already have a complete sierra disc back end, I was merely curious in my earlier posts.