Terrapin_racing
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| posted on 29/3/04 at 08:15 AM |
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Granada IRS Differentials
Showing my ignorance here!
Last time I played with a Ford it was to 5 link a rear axle on a MK2 Escort!
What's the difference between the Sierra and the Granada diffs (visually the Granada has flanges for the driveshafts).
Are they heavier duty? All information gratefully received.
Rob
[Edited on 29/3/04 by Terrapin_racing]
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phelpsa
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| posted on 29/3/04 at 08:30 AM |
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Yes, granada diffs are heavier duty. They are also a lot heavier, so are in no way suitable for a locost, except maybe for v8s.
Adam
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James
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| posted on 29/3/04 at 09:49 AM |
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I don't think they're necessarily heavier duty. In a lot of cases they're identical AFAIK. (Apart from being 5 wheel stud as opposed
to 4).
The prescence of flanges (Lobro drive shafts) as opposed to the push fit Tripode drive shafts depends on whether the car had disc brakes (Lobro) or
drums.
Look for some of the earlier posts by Graceland for a list of what cars had what. What you need to look out for is the width of the top mount- most
Sierras/Granadas have a 7" top mount, some though had a 7.5" one. A very small number (I'm think it's a motorsport variant)
had a 9" top mount.
Waiting to be corrected...
James
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timf
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| posted on 29/3/04 at 09:53 AM |
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quote:
Originally posted by James
A very small number (I'm think it's a motorsport variant) had a 9" top mount.
Waiting to be corrected...
James
the motorsport diff has a 9" cwp but the top mount is 7.5"
consider youself corrected james 
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Terrapin_racing
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| posted on 29/3/04 at 10:03 AM |
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Thanks Guys.
It's not for a Locost but a V8 single seater I have in mind. - Always like to have a project insight whilst my existing one is drawing to
completion - sad eh?
PS: I've got the diff with flanges and will be looking for the Lobro drive shafts and rear hubs etc.
Just in case anyone is clearing out!
or, can I use the Lobro driveshafts with Sierra hubs?
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James
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| posted on 29/3/04 at 10:08 AM |
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Cheers Timf!
Terrapin,
As far as I know the bolt together driveshafts/hubs have a compatible bolt pattern so I don't see what not.
James
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Terrapin_racing
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| posted on 29/3/04 at 10:31 AM |
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Thanks again
Rob
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eddymcclements
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| posted on 29/3/04 at 11:25 AM |
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I am using the Granada Scorpio diff in my car. It's the same as disk braked Sierras (except Cosworth) and has the flanges, Lobros etc. I
swapped the drive flanges for a pair from a Sierra to get a 4-stud fitment. The main reason I chose this unit over a Sierra one was that the Scorpio
was a fairly late model (J-reg) and had done relatively few miles before the owner slid off the road into a ditch. It also had one new rear caliper
fitted.
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Terrapin_racing
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| posted on 29/3/04 at 11:32 AM |
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Thanks Eddie, nice to see Ford interchangeability remains!
Rob
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lord dave
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| posted on 22/4/04 at 11:35 AM |
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sierra diff mk2 granada hubs
does that mean i can use a sierra diff with granada hubs cos i have an old mk2 granada and want to use the drums with 5 stud but the diff in the
granada is huge its like nearly 800mm long and weighs a ton
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TL
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| posted on 22/4/04 at 11:53 AM |
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My 2pworth:
AFAIK the MKI & MKII Granada (i.e.72-85ish) diffs are not the same as MKIII & Sierra diffs. In other words the diff we all talk about was
introduced with the Sierra in about 82?, and used on MKIII (hatch) Grannies from about 85. Also, I believe that the very late scorpio diffs might be
different still, but I'm not sure in what respect.
I think ALL MKIII Grannies had ABS as standard, so they would all have rear discs, i.e Lobro flanges.
Cheers,
Terry
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James
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| posted on 22/4/04 at 05:00 PM |
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Dave,
Welcome to the nuthouse- what u building?
Have you considered the back end of a P100 Sierra pickup truck?
It's Sierra diff, 5 stud and I'm pretty sure drums back end. The only issue is if the stud pattern is different but I'd guess it
was the same!
Hope that helps,
James
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NS Dev
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| posted on 22/4/04 at 05:08 PM |
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all mk 3 (1985 on) grannies have the lobro shfts with 5 stud hubs. Everything is identical to the sierra setup bar the hub flanges (i.e. the outer 1/2
of the hub if you undo the nut) the inner hub/carrier is the same.
The mk 1 and 2 are different diff etc, though still lobro, but lobro diameter may be a bit smaller??
I think the P100 stud pattern is transit, which I think?? is bigger than granny. Nice full floating hubs though, thought about this one for a rally
car before, the full floaters are a lot stronger than the standard atlas ones!!
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lord dave
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| posted on 22/4/04 at 08:50 PM |
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what im building
im building a mid engined car but instead of using a transaxle i thought actually putting th engine in the middle of the car would guve it better
balance but the granada diff is to long so maybe i will just get the sierra one and the front hubs aswell. or maybe the cv joints are the same ne
ideas thanks in advance
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Peteff
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| posted on 22/4/04 at 09:52 PM |
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Mk 1 Granadas?
The one that I repaired had a live axle. It was a long time back but I'm pretty sure it was like a 2.8i Capri type.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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ned
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| posted on 23/4/04 at 09:04 AM |
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I htought the early granada's were live axle like pete says, i also thought the p100 had a beam/live axle too.
Ned.
beware, I've got yellow skin
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James
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| posted on 23/4/04 at 01:39 PM |
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Actually you're right mate- I'm talking sh!t (standard)! The P100 is live axle- sorry!
James
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ned
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| posted on 23/4/04 at 02:14 PM |
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quote:
Originally posted by James
Actually you're right mate- I'm talking sh!t
no change there then  
beware, I've got yellow skin
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NS Dev
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| posted on 23/4/04 at 04:27 PM |
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the Mk 1 granada was IRS. The mk 3 granada diff is much shorter than the mk 1 and 2 and is identical to the sierra 7 or 7.5 inch diffs (granada 24v
used the 7.5inch as fitted to the sierra cosworth)
P100 is live axle (narrow transit axle)
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NS Dev
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| posted on 23/4/04 at 04:30 PM |
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lord dave, with a "normal" gearbox you won't get a propshaft in unless the engine is pretty much between the front seats, transaxle
is much easier. Even with transverse mid/rear mounted engine with fwd car gearbox your weight distribution will be between 60/40 rear-front to 50/50
so don't worry too much about getting weight forward.
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lord dave
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| posted on 30/4/04 at 12:46 AM |
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transverse
ne1 know good transverse gearbox 5 speed at least that i can put a 2.8 v6 cologne on would like an escort or fiesta one do think the fiesta one might
fall to bits under power
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theconrodkid
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| posted on 30/4/04 at 06:40 AM |
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a mundano box would be stronger,they also did a V6 mundano so why not use the V6 mundano n box,lighter and more power?
who cares who wins
pass the pork pies
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NS Dev
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| posted on 30/4/04 at 11:03 AM |
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Lord Dave, why not use the engine mid mounted but longitudinal and use some of the solutions used by autograss racing cars. Probably the most common
being the Volkswagen Transporter (rear engined one) transaxle, fitted with an adaptor plate. Saw one for sale with a Ford V6 adaptor recently for
about £100 but it is sold now. I can do some ringing around if you want, I think one could be found fairly easily.
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lord dave
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| posted on 30/4/04 at 12:06 PM |
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thanks for all help
gonna use type 9 and make front engined roadster now cause got most of the parts already but grateful for all the help will come in handy for next
project. wich will be a light weight super fast mid engine mclaren eater. so ne suggestions for engine and transaxle for that and were to get it most
apretiated. cheers all
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