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Topic: 4x4 diff ratios (Read 6550 times) |
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Highlander
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13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
 
Posts: 8244
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4x4 diff ratios
« on: Jun 27th, 2009, 11:26pm » |
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Any of you old dudes know what the Sierra/Granada 4x4 diff ratios were? 
Were there different ones?
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on Oct 17th, 2011, 12:35pm, Simmo wrote:I give up !  Too much for an old boy!  |
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gozz
Senior Member
Been around awhile
Posts: 3475
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Re: 4x4 diff ratios
« Reply #2 on: Jun 28th, 2009, 4:00pm » |
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Good job they are both the same imagine the tyre wear !
GOZZ
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2354
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Re: 4x4 diff ratios
« Reply #3 on: Jun 28th, 2009, 5:43pm » |
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on Jun 27th, 2009, 11:26pm, Highlander wrote:Any of you old dudes know what the Sierra/Granada 4x4 diff ratios were?
Were there different ones? |
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Do I smell a 4x4 Scorpio conversion going on here
As GOZZ says, pretty important to have matching front and rear diff ratios.
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Star sign is Scorpio !
Sierra XR4i's are great...especially when fitted with 4WD 
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Highlander
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13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
Posts: 8244
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Re: 4x4 diff ratios
« Reply #4 on: Jun 29th, 2009, 12:43pm » |
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Maybe
I'm nearly ready to get into a manual conversion job so just thinking out loud
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2354
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Re: 4x4 diff ratios
« Reply #5 on: Jun 29th, 2009, 1:03pm » |
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Nice one 
Got a bit of 4WD project on myself at the moment only not with a Scorpio, something else with a blue oval badge on though
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Star sign is Scorpio !
Sierra XR4i's are great...especially when fitted with 4WD
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Highlander
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13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
Posts: 8244
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Re: 4x4 diff ratios
« Reply #6 on: Jun 29th, 2009, 4:14pm » |
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So are the front and rear crown wheels interchangeable or is it a completely different animal?
The car I'm doing it on currently has a 4.27 diff, I'd rather keep it like that if possible but I dont know if a rear 4.27 set up would fit in the front?
If not then I can just go with the standard diff set up.
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2354
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Re: 4x4 diff ratios
« Reply #7 on: Jun 29th, 2009, 5:18pm » |
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on Jun 29th, 2009, 4:14pm, Highlander wrote:So are the front and rear crown wheels interchangeable or is it a completely different animal?
The car I'm doing it on currently has a 4.27 diff, I'd rather keep it like that if possible but I dont know if a rear 4.27 set up would fit in the front?
If not then I can just go with the standard diff set up. |
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No, front & rear crownwheels are totally different.
Front diff bolts to the offside of the sump on the 4x4 and is about 1/2 the size of the rear diff. Drive to the nearside wheel is via a shaft which goes through the sump.
Get hold of a V6 Sierra Haynes manual ( couple of £'s on fleabay ) and all will be revealed. The Mk3 Granada Haynes manual I have does not cover the 4x4 models - although the setup is basically the same as on the Sierra.
There were also 4-cyl Sierra's with 4WD - not sure but think the sump from one of these would fit a Scorpio DOHC block if you don't want to go down the V6 route.
You would need to sort something out for the speedo drive - early 4x4 models are driven off the nearside front output to the driveshaft, don't know about later models though.
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Star sign is Scorpio !
Sierra XR4i's are great...especially when fitted with 4WD
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Gazza_UK
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2.3 Ultima auto :-)
Posts: 166
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Re: 4x4 diff ratios
« Reply #8 on: Jun 29th, 2009, 10:30pm » |
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OH ah can of worms opened here 
Haveing owned a xr4x4 2.8 for over 17yrs untill my accident and now got an AUTO ultima. .
I can say that I was well into the 4x4 scene and that I can deffo tell you the 4x4 2ltr was way down on power and fuel wise . .
Now the 2,8 is a lot better but the 66/34 split drive rear to front is awesome as most people seem to think that its engaged 4x4 all the time ( yes in theory ) but as the front wheel spins then the viscous coulping jumps in and puts power to the rear LSD and vice versa
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pinto
Full Member
TD04 on a galaxy manifold ? whooooooosh !
Posts: 474
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Re: 4x4 diff ratios
« Reply #9 on: Jun 29th, 2009, 10:46pm » |
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3.62 Diff ratio for the 6 pots, 3.92 ratio for the 2.0 XR4x4s - remember that sierras ALL had 7" rear diffs, so not interchangable with the scorp or granny
3.14 Ratio was a rare option, only found in the 2300 N/A Diesel sierras or some scandinavian xr4x4s - Turbo technics also used them along with a custom made crownwheel for the Minker's front diff
Scorps share a 7.5" Crownwheel with the granada or 2WD cosworth sierra - these are available in other ratios (i beleive 3.34 being the lowest and 4.27 the highest)
Gazza - believe me when i say that WILL sell at that price - the diff being sold is my friend Marty, who built me one to go on a sapphire 24v conversion that didnt happen; i sold my diff to a gent with a v8 kit car for exactly what he's charging....
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Gazza_UK
Full Member
2.3 Ultima auto :-)
Posts: 166
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Re: 4x4 diff ratios
« Reply #10 on: Jun 29th, 2009, 10:53pm » |
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on Jun 29th, 2009, 10:46pm, pinto wrote:
Gazza - believe me when i say that WILL sell ... |
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Never said it wont 
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martin_rowe
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I love YaBB 1G - SP1!
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Re: 4x4 diff ratios
« Reply #11 on: Jun 30th, 2009, 8:34am » |
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3.34 would then be the highest, and 4.27 the lowest.
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Highlander
Moderator
Expert
13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
Posts: 8244
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Re: 4x4 diff ratios
« Reply #12 on: Jul 17th, 2009, 8:01pm » |
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Well thanks to Gazza's guidance I've just picked myself up a nice 1988 2.9 4x4 for £200
Only thing is, the more I look at it the more I think it deserves to be back on the road, its had a lot of work done to it and really just needs some tidying up and finishing off..
Had a shot in it tonite, very fast and holds the road great.
will have a good look at it tomorrow and decide!
The joys of motoring!
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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Highlander
Moderator
Expert
13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
Posts: 8244
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Re: 4x4 diff ratios
« Reply #13 on: Jul 17th, 2009, 8:13pm » |
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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lesterlad aka Rodders
Full Member
2.3 Ghia x Estate (Manual)
Posts: 877
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Re: 4x4 diff ratios
« Reply #14 on: Jul 17th, 2009, 9:25pm » |
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That manual will come in handy then Stuart.
Have you collected it yet ?
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There's are methods to my madness!!! I'm not sure what the methods are but there's definitely madness in them
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Highlander
Moderator
Expert
13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
Posts: 8244
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Re: 4x4 diff ratios
« Reply #15 on: Jul 17th, 2009, 9:31pm » |
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Yep, picked it up tonite Rod, cheers for that
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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Geoff_W
Senior Member
98 Ulti2.5tdi Auto
Posts: 1340
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Re: 4x4 diff ratios
« Reply #16 on: Jul 18th, 2009, 11:12am » |
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Stuart,
That really looks to good to break, but the thought of a 4x4 Ultima really appeals. Bit of a dilemma there then.
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The winding road goes on and on... or at least it does in Northumberland
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Geoff_W
Senior Member
98 Ulti2.5tdi Auto
Posts: 1340
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Re: 4x4 diff ratios
« Reply #17 on: Jul 18th, 2009, 11:35am » |
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Spotted another possible donor. IM'd you.
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The winding road goes on and on... or at least it does in Northumberland
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Gazza_UK
Full Member
2.3 Ultima auto :-)
Posts: 166
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Re: 4x4 diff ratios
« Reply #18 on: Jul 18th, 2009, 11:28pm » |
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 No Stuart dont drive it to much you will be sorry . . . .
But if you do . . . .
when you come to an island like you gonna go straight on
( like on a clock face from 6 to 12 o'clock ) . . .
when you are a quarter way round ( that would be 9 o'clock ) hit the power
( make sure road is empty if its your first time and dry )
also was gonna say stay in 2nd gear but its an mt75 box
And hold on tight
Edit Current Scorpio Fleet = 13 + 1 XR4x4
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pinto
Full Member
TD04 on a galaxy manifold ? whooooooosh !
Posts: 474
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Re: 4x4 diff ratios
« Reply #19 on: Jul 18th, 2009, 11:43pm » |
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If i'd know it was just the 4x4 gear you wanted stu, I have front and rear diff's off the car ( 3.62 AND 3.92 ratios ).....
Given the scorp suspension is Mondeo based, does it all check out with hubs / shock tube diameters ?
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