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09-04-2014, 04:35 PM | #1 | ||
AU3 5.0L Fairmont Wagon
Join Date: Mar 2011
Location: Ford Performance Club of ACT
Posts: 2,510
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Does anyone how if the IRS 3.45 LSD will come out of the Final Drive unit and bolt in to the Solid Beam housing?
I am looking at putting a 3.45 LSD in to my wagon and have found an IRS 3.45 LSD Regards Ray
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09-04-2014, 05:21 PM | #2 | ||
FF.Com.Au Hardcore
Join Date: Apr 2012
Location: Adelaide
Posts: 2,802
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im pretty sure the lsd is a totally different carrier
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09-04-2014, 05:28 PM | #3 | ||
AU3 5.0L Fairmont Wagon
Join Date: Mar 2011
Location: Ford Performance Club of ACT
Posts: 2,510
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Hmmm not sure, I know that you can put the IRS LSD in to a non LSD IRS, just not sure about putting it in the beam axle
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09-04-2014, 06:25 PM | #5 | ||
AU3 5.0L Fairmont Wagon
Join Date: Mar 2011
Location: Ford Performance Club of ACT
Posts: 2,510
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I know the solid beams can take the LSD because mines got one in it at the moment but it's not a 3.45 ....
The solid beam manual talked about the LSD as well... Hmm wonder if it's worth buying it and seeing, and if not selling it off ....
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09-04-2014, 07:14 PM | #6 | ||
FF.Com.Au Hardcore
Join Date: Apr 2012
Location: Adelaide
Posts: 2,802
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just ring up a diff shop in Adelaide? theres a few renowned ones here, they'll know, or even athol park ford wreckers would know
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09-04-2014, 07:16 PM | #7 | ||
AU3 5.0L Fairmont Wagon
Join Date: Mar 2011
Location: Ford Performance Club of ACT
Posts: 2,510
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Thanks mcfly94, I might do that tomorrow just to make sure.
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10-04-2014, 09:20 AM | #8 | ||
5.6L x 2 pilot
Join Date: Dec 2009
Location: Canbra
Posts: 15,038
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Ray, come and borrow my IRS diff and see if the centre will fit into your live axle housing. It is a 3.23 single spinner, but it should at least highlight if the centre will fit?
Stu
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2002 AU II LTD 5.6L 342ci T3 Short, AFR165 heads, Comp XE270HR-12 Cam, Brembo 4/4s(355/330), T3 5 spokes, LC-1 wideband, Whiteline HD swaybars, TCE 3K Hi Stall, PWR Auto Trans Cooler, Koni shocks, King Low Springs, Hurricane headers, 100 cpsi cats, Twin 2.5" exhaust. Quarter Mile: 13.73 @ 105.86mph Runner Up NA/DA to BF Fairlane/LTD Geelong AFD 2024 2002 XR8 pursuit 250 Custom twin 2.5" exhaust w Herrod modifed extractors, Tuned with Moates QH
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10-04-2014, 01:26 PM | #9 | |||
AU3 5.0L Fairmont Wagon
Join Date: Mar 2011
Location: Ford Performance Club of ACT
Posts: 2,510
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Quote:
Damn ........ Cheers for the offer Stu, now just need to find a 3.45 LSD from like a series 1 XR8 as they had the solid beam
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10-04-2014, 01:36 PM | #10 | ||
meh.
Join Date: Jul 2010
Location: Was Central Coast, Now Sydney NSW
Posts: 8,584
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Ahahaha, they do bolt in. I've got a set of 3:45's from an AU IRS center in my EF wagon. Did the diff center, and pinion swap on my driveway.
Can always get an XR ute diff complete and just bolt it in. AU1 XR8's still got IRS too.
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10-04-2014, 01:38 PM | #11 | |||
AU3 5.0L Fairmont Wagon
Join Date: Mar 2011
Location: Ford Performance Club of ACT
Posts: 2,510
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Quote:
Is yours the LSD ? Hmmmm ok this gives me more hope hahaha Cheers Tony
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10-04-2014, 01:44 PM | #12 | ||
meh.
Join Date: Jul 2010
Location: Was Central Coast, Now Sydney NSW
Posts: 8,584
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Yeah it's an LSD center.
I doubt there's a difference between EF and AU. Even my standard axles went back in no issues.
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10-04-2014, 01:45 PM | #13 | |||
AU3 5.0L Fairmont Wagon
Join Date: Mar 2011
Location: Ford Performance Club of ACT
Posts: 2,510
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Quote:
Ray
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10-04-2014, 02:00 PM | #14 | ||
meh.
Join Date: Jul 2010
Location: Was Central Coast, Now Sydney NSW
Posts: 8,584
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The only thing though, is that getting the diff center out/in is a tight fit, so be careful. I used a rubber mallet to slowly tap the LSD 3:45's in, and some rope to rip the old one 3:23's out.
What I did was brakes off, handbrake released, then the 4 bolts (14mm off memory) that hold the axle in. I didn't have to remove the handbrake gear at all though, left that in place. Drain the oil before pulling the axles just incase.
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10-04-2014, 02:03 PM | #15 | |||
AU3 5.0L Fairmont Wagon
Join Date: Mar 2011
Location: Ford Performance Club of ACT
Posts: 2,510
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Quote:
I'll give it a try, will put a new seal in the housing at the same time
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10-04-2014, 02:11 PM | #16 | ||
AU3 5.0L Fairmont Wagon
Join Date: Mar 2011
Location: Ford Performance Club of ACT
Posts: 2,510
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Ok so have called another diff place and have been told they are a very easy swap to do and the IRS set will bolt straight in.
Thanks again for the advice Tony. Ray
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10-04-2014, 04:43 PM | #17 | ||
Walking with God
Join Date: Mar 2005
Location: Melbourne
Posts: 7,321
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Sounds like a ripper mod!
All the best with it. GK
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2009 Mondeo Zetec TDCi - Moondust Silver 2015 Kia Sorento Platinum - Snow White Pearl 2001 Ducati Monster 900Sie - Red Now gone! 1999 AU1 Futura Wagon - Sparkling Burgundy On LPG Want a Full Life? John 10:10 |
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11-04-2014, 05:33 PM | #18 | ||
AU3 5.0L Fairmont Wagon
Join Date: Mar 2011
Location: Ford Performance Club of ACT
Posts: 2,510
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Thanks GK, i'll make sure there are plenty of pics up on my thread when I do it
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11-04-2014, 05:56 PM | #19 | ||
RIP...
Join Date: Dec 2004
Posts: 15,524
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I've rebuilt both types of these diffs, live axle and IRS, though I haven't had them in pieces side by side.
For some reason I understand they aren't interchangeable, but now reading this thread further, I want to see for myself. I have a live axle setup that I'm in the middle of reassembling right now, and I have a IRS center sitting in the shed. I'll take the hat off the IRS center tomorrow, eyeball it, and take a few measurements while the hat is still off the live axle. How does that sound...
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11-04-2014, 05:59 PM | #20 | |||
AU3 5.0L Fairmont Wagon
Join Date: Mar 2011
Location: Ford Performance Club of ACT
Posts: 2,510
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Quote:
I spoke with a diff place here in canberra and he said they are interchangable centres, and actually had one of each he just finished building for someone Ray
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12-04-2014, 01:14 PM | #21 | ||
RIP...
Join Date: Dec 2004
Posts: 15,524
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I can't eyeball a difference between the spools.
However the cones and spider gears must be slightly different as the IRS half shafts lock into the cone/spider gear with a 'C' clip. I can also see a slight difference in the cones from the small clearance inspection hole. My guess is an IRS spool might go into a solid housing, but probably not the other way around, as the IRS half shafts wouldn't be able to lock into anything. Without completely disassembling the IRS spool I have here, I can't really tell for sure. (I don't want to disturb this unit). In a nutshell it possibly works the way you want to do it, however if it were me I'd probably try to source the correct parts as there is definitely a difference. For your info, I picked up 2 x LS spools from Ebay a couple weeks back for $200. I've already rebuilt 1 (machined cones/shimmed) and plonked it in my work ute with 4.11 gears, it works perfect. The other one will go into my XR6 wagon when I find some 3.7 or 3.9 gears.
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. Oval Everywhere... |
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12-04-2014, 02:24 PM | #22 | ||
AU3 5.0L Fairmont Wagon
Join Date: Mar 2011
Location: Ford Performance Club of ACT
Posts: 2,510
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Thanks for that info Sox, yeah the diff guy said to me the same thing that the IRS would go in to a solid beam but not the other way around so your 'eyeballing' seems pretty spot on lol
Cheers Ray
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13-04-2014, 06:19 PM | #23 | ||
FF.Com.Au Hardcore
Join Date: Jan 2008
Location: Sunbury, vic.
Posts: 3,110
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The cones are different, you can use the IRS cones in a live axle, however live axle cones don't have the circlip for the half shafts.
The diff gears and LSD center and completely interchangeable into the live axle housing, I have done it before.
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13-04-2014, 06:54 PM | #24 | ||
FF.Com.Au Hardcore
Join Date: Apr 2012
Location: Adelaide
Posts: 2,802
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so if go buy a complete irs lsd 3.45 centre I can swap into my live axle diff?
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14-04-2014, 08:44 PM | #25 | ||
FF.Com.Au Hardcore
Join Date: Jan 2008
Location: Sunbury, vic.
Posts: 3,110
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you can swap the center and gears yes, you need to use all the shims from the donor diff, which means knocking the pinion bearing shells out of the housing and using them and the shim that is behind it in the live axle diff.
As long as its a Ford BTR78 series diff that is.
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03-12-2015, 10:27 PM | #26 | ||
Regular Member
Join Date: Apr 2011
Posts: 111
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Hi fellas, So what set up does the 2002 au3 forte have ? I have my AU2 fairghia 3.45 lsd IRS, and am looking to transplant into a au3 2002 forte, plus do the lot interior electrics heater box, dash ecu bcm, engine trans, or will the double wish bone bolt straight to the au3 forte ? cheers. slapped a tree, bounced front wheel to back wheel, and mashing my rear quarter dog leg, fun times. expensively stupid. thanks in advance merry xmas HNY!!
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