Guinness
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| posted on 29/5/09 at 08:03 AM |
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Sierra 4x4 system
Does anyone know:-
If the front diff from a 4x4 Sierra is the same ratio as the back one? I know it sounds obvious that they would be, but the way that the drive is
taken off by chain / gears it could be a diff diff ratio?
If so were they all 3.62?
Which way round does the input flange turn to make the wheels go forwards?
Does the front diff work as a stand alone diff without the oil from the sump? I assume there would be a seal between the two.
Can you support the cross shaft that runs through the sump with another bearing?
If you were stupid enough to try to use the 4x4 Sierra front hubs on a 7, you'd have to relocate the front coil overs. I'm also guessing
you'd need custom length driveshafts.
Mike
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mcerd1
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| posted on 29/5/09 at 08:17 AM |
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quote:
Originally posted by Guinness
If the front diff from a 4x4 Sierra is the same ratio as the back one?
If so were they all 3.62?
yes,
they are 3.62 front and back on the V6 and cossie cars - and 3.92 on the 2.0 XR4x4's
quote:
Originally posted by Guinness
If you were stupid enough to try to use the 4x4 Sierra front hubs on a 7, you'd have to relocate the front coil overs. I'm also guessing
you'd need custom length driveshafts.
are you thinking about a building a 4x4 ?
if so you should look at the dax rush quadra and there have been a few 4x4 locosts built as well
basically they use the sierra / cossie 4x4 setup, but mount the diff in front of the engine with modified drive/prop shafts etc....
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thunderace
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| posted on 29/5/09 at 08:55 AM |
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i have been thinking for a long time about turning my b-type dutton into a 2.0 XR4x4's Sierra running gear.but was told it was not worth doing
as it would not work.i even went and got the 2.0 XR4x4's Sierra,then scraped it once i was told it would not work.
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James
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| posted on 29/5/09 at 09:01 AM |
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Liam's is the best Locost 4x4 I've seen. Few pics in his archive.
Think this one shows it pretty well though!
 
Front susp 2
HTH,
James
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"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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James
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| posted on 29/5/09 at 09:04 AM |
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Others have done it without inboard suspension though, they just off-set the shock backwards from the centreline of the wishbone.
Presumably beefing the wishbone up somewhat to compensate for the twisting forces upon it.
Cheers,
James
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"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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tomblyth
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| posted on 29/5/09 at 09:27 AM |
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why dont you have a look at pauls as you know him and he's close!
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Guinness
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| posted on 29/5/09 at 09:36 AM |
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Hi Tom
Spending 1,000 miles blatting with Paul was the inspiration....
Cheers
Mike
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James
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| posted on 29/5/09 at 09:36 AM |
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quote:
Originally posted by thunderace
i have been thinking for a long time about turning my b-type dutton into a 2.0 XR4x4's Sierra running gear.but was told it was not worth doing
as it would not work.i even went and got the 2.0 XR4x4's Sierra,then scraped it once i was told it would not work.
Who told you that? And why?
I think the Daax Rush Quadra is enough proof the person who told you is wrong! lol!
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"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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hellbent345
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| posted on 29/5/09 at 12:27 PM |
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if you need any 4x4 bits i have a 4x4 gearbox and front diff, front sump etc all the bits apart from the engine, prop and rear driveline
Thanks Al
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Guinness
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| posted on 29/5/09 at 05:03 PM |
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quote:
Originally posted by hellbent345
if you need any 4x4 bits i have a 4x4 gearbox and front diff, front sump etc all the bits apart from the engine, prop and rear driveline
Thanks Al
Tempting Al, but Newcastle to Norfolk is a loooonnnnnggggg way! 
Cheers
Mike
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hellbent345
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| posted on 30/5/09 at 10:12 PM |
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haha truly! but i will be going to a few shows sometime in the future, could meet up if you wanted them in the future there An option if you needed
it 
[Edited on 30/5/09 by hellbent345]
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Rob Allison
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| posted on 2/6/09 at 08:53 PM |
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quote:
Originally posted by Guinness
Does anyone know:-
If the front diff from a 4x4 Sierra is the same ratio as the back one? I know it sounds obvious that they would be, but the way that the drive is
taken off by chain / gears it could be a diff diff ratio?
You can change the step off gears in the centre diff. Ford motorsport did it to allow different size front diffs to be fitted. A 7"
or even 7 1/2" 3.92 and other ratios were fitted. Not cheap.
If so were they all 3.62?
Quite a few different ratios. Not sure how many small diff ones there are. 3.92 and 3.62 are standard. 3.16 turbo technics ?
Does the front diff work as a stand alone diff without the oil from the sump? I assume there would be a seal between the two.
Yes its sealed, but the cross shaft is also part of the seal
Can you support the cross shaft that runs through the sump with another bearing?
Yes. Andy Gallacher did it with his focus
Here
http://passionford.com/forum/restorations-rebuilds-and-projects/213573-andy-gallachers-carbon-focus-new-engine-nearly-ready.html
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