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#1 | ||
Regular Member
Join Date: Mar 2009
Location: Adelaide
Posts: 226
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I know this has probably been asked before, but..
I know there are two different types of diffs, IRS and.... ??? cant remember the other one. 1) what is the difference 2) can they be swapped between cars 3) can a centre be swapped over 4) how do i tell which is which? Thanks
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AUI Ford Fairmont | Lowered with Kings | XR8 Leather Interior | XR6 Tickford Engine and Gear box| |
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#2 | ||
FF.Com.Au Hardcore
Join Date: Aug 2006
Location: Salamander Bay
Posts: 5,427
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IRS and live axle they can't be swaped without welding mounting points in and IRS isa diff in a cradle with drive shafts to eack wheel where a live axle is a solid unit disk to disk
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[SIGPIC][/SIGPIC]
Everyone starts off with a bag full of luck and an empty bag of experience. The trick is to fill the experience bag before the luck bag is empty. "It is better to remain silent and be thought a fool than to speak out and remove all doubt." Start a new career as a bus driver Rides: FG2 XR6 stock at this stage but a very nice ride xc 4 DOOR X CHASER 5.8 UNDER RESTO |
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#3 | ||
Regular Member
Join Date: Mar 2009
Location: Adelaide
Posts: 226
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Ok, cheers for that info... How do I tell what my au has? Is it just after a certain time they changed over, ie different models?
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AUI Ford Fairmont | Lowered with Kings | XR8 Leather Interior | XR6 Tickford Engine and Gear box| |
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#4 | ||
FF.Com.Au Hardcore
Join Date: Sep 2009
Location: Brisbane, Qld
Posts: 683
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If the exhaust goes under the diff its IRS if it goes over its live axle.
Fairmont ghia's, XR8's, Fairlanes, T series all had IRS. It was an option on all models though except utes. |
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#5 | ||
FF.Com.Au Hardcore
Join Date: Feb 2006
Location: out of sight from the kids & wife
Posts: 866
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if it looks the same as say xf, xd, xc then its live axle. If its got control arms and also drive shafts off the centre to the wheels then its irs. a quick glance will answer it they look totaly diff
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#6 | ||
FF.Com.Au Hardcore
Join Date: May 2006
Location: Perth, South
Posts: 3,064
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poke your head under the back and rock the car up and down. if the car moves and the diff stays still it's live axle, if the diff moves with the car it's irs.
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#7 | |||
rexnet
Join Date: Feb 2010
Location: Adelaide, South Australia
Posts: 3,562
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Quote:
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#8 | |||
FF.Com.Au Hardcore
Join Date: Aug 2006
Location: Salamander Bay
Posts: 5,427
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Quote:
this is what an IRS setup loks like in the AU http://cgi.ebay.com.au/ford-au-xr6-x...item2563102fe9
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[SIGPIC][/SIGPIC]
Everyone starts off with a bag full of luck and an empty bag of experience. The trick is to fill the experience bag before the luck bag is empty. "It is better to remain silent and be thought a fool than to speak out and remove all doubt." Start a new career as a bus driver Rides: FG2 XR6 stock at this stage but a very nice ride xc 4 DOOR X CHASER 5.8 UNDER RESTO Last edited by FGII-XR6; 24-04-2011 at 09:58 PM. |
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#9 | |||
rexnet
Join Date: Feb 2010
Location: Adelaide, South Australia
Posts: 3,562
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Quote:
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#10 | ||
Resident AFF detailer
Join Date: Dec 2008
Location: Melbourne, VIC
Posts: 3,730
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So can a centre from a 3:45 IRS diff be transferred into a live axle housing?
If not, how do I get my 3:08 AU3 live axle rear diff to become a 3:45?
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No longer an 'active' detailer. |
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#11 | |||
FF.Com.Au Hardcore
Join Date: Aug 2008
Posts: 1,128
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Quote:
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GT 335 11.3@124.1mph 383rwkw/513rwhp Forced Performance Tuned |
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#12 | |||
FF.Com.Au Hardcore
Join Date: Aug 2006
Location: Salamander Bay
Posts: 5,427
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Quote:
__________________
[SIGPIC][/SIGPIC]
Everyone starts off with a bag full of luck and an empty bag of experience. The trick is to fill the experience bag before the luck bag is empty. "It is better to remain silent and be thought a fool than to speak out and remove all doubt." Start a new career as a bus driver Rides: FG2 XR6 stock at this stage but a very nice ride xc 4 DOOR X CHASER 5.8 UNDER RESTO |
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#13 | |||
FF.Com.Au Hardcore
Join Date: Aug 2008
Posts: 1,128
|
Quote:
__________________
GT 335 11.3@124.1mph 383rwkw/513rwhp Forced Performance Tuned |
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#14 | ||
FF.Com.Au Hardcore
Join Date: Sep 2009
Location: Brisbane, Qld
Posts: 683
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I think AU2 HP's all had a LSD's and AU3 they had to be optioned to get one.
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#15 | ||
FF.Com.Au Hardcore
Join Date: Aug 2008
Posts: 1,128
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Was optional from AU. Even early build AU's it was an option.
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GT 335 11.3@124.1mph 383rwkw/513rwhp Forced Performance Tuned |
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#16 | |||
FF.Com.Au Hardcore
Join Date: May 2006
Location: Perth, South
Posts: 3,064
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Quote:
you can't really swap a live axle centre into an irs cradle because it doesn't have the retaining clips to hold the cv's into the diff. |
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#17 | ||
Resident AFF detailer
Join Date: Dec 2008
Location: Melbourne, VIC
Posts: 3,730
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yeah I think I get that now....
So for example there are these diff gears on ebay: http://cgi.ebay.com.au/HOLDEN-COMMOD...#ht_1306wt_905 Now it says it can be used with either a single spinner or LSD centre - what does that mean? How are they different? EDIT - I should clarify - I know the difference between LSD and single spinners in how they work....but the actual structure of the part itself is what I'm referring to... I'm assuming if I were to put the abovelinked parts into my current diff, I'd go from a 3:08 single spinner to a 3:45 single spinner, correct? If so, what part do I need to get my hands on to make it LSD??
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No longer an 'active' detailer. Last edited by Dave_Obsession; 25-04-2011 at 11:31 AM. |
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#18 | ||
FF.Com.Au Hardcore
Join Date: Sep 2009
Location: Brisbane, Qld
Posts: 683
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The crown shell and pinion is the same between a 3.45 LSD and a open 3.45. It's in the centre of the crown wheel that is different. It will have clutch packs if it's a clutch LSD or cones if it's a cone type LSD where the planetary gears sit. The planetary gears still work the same as an open centre but the clutches will grab when enough force is applied by your right foot also how tight it has a been shimmed has a big play as to whether it will be closer to a locked diff or an open centre There is also torsion but you won't find one of those in any
falcon. My old te72 had a Trd 2 way LSD so it would lock both wheels under acceleration and under deceleration. Good for drifting but not good normal wet weather driving. |
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#19 | |||
FF.Com.Au Hardcore
Join Date: Aug 2006
Location: Salamander Bay
Posts: 5,427
|
Quote:
__________________
[SIGPIC][/SIGPIC]
Everyone starts off with a bag full of luck and an empty bag of experience. The trick is to fill the experience bag before the luck bag is empty. "It is better to remain silent and be thought a fool than to speak out and remove all doubt." Start a new career as a bus driver Rides: FG2 XR6 stock at this stage but a very nice ride xc 4 DOOR X CHASER 5.8 UNDER RESTO |
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#20 | ||
Regular Member
Join Date: Apr 2011
Posts: 111
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Hi fellas, got my 3.45 lsd out my irs carrier, and want to fit it into my live axle 3.08. Now is it easiest to just make the 3.08 lsd, by fitting the crown to the lsd center, so the live keeps the 3.08 crown and pinion, but it will be lsd ? Cheers, thanks in advance
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