corrupt Posted August 5, 2006 Share Posted August 5, 2006 so basically, ive just got the larger borg warner diff from a aussie 6cly cortina, and now on the lookout for a falcon lsd to bolt into it. what ratios are there and what would be the best for my 2L running a 5spd sierra, the ratio i have now is 3.75 which is standard. theres one on tm, its a 3.23, would that be suitable?? or anyone got a lsd diffhead for sale etc? any help appreciated, i think i read somewhere that any diffhead from xa-xd falcons will fit, this true? Quote Link to comment Share on other sites More sharing options...
Burntrubber Posted August 5, 2006 Share Posted August 5, 2006 I have a V8 XF fairmont borgwarner Lsd center in a Commodore housing in one of my Gemini's. I used the crown and pinion from a 2L berlina commy it is 4.1:1 there are almost endless ratios for them. I dont know if they are exactly the same housing center ect as the 6cyl cortina though. Quote Link to comment Share on other sites More sharing options...
crazy_rich Posted August 5, 2006 Share Posted August 5, 2006 you'll want a diff head out of a mid to late eighties falcon ute, they are all lsd, and so long as the utes a manual its usually between 3.2:1 - 3.5:1 sorta ratio, should be good for ur cruiser, and if u can get hold of an xf fairmont diff, it will be lsd, but a shit ratio But it should have disk brakes. I did get offered one for $150 complete disk to disk. Quote Link to comment Share on other sites More sharing options...
Gaz Posted August 6, 2006 Share Posted August 6, 2006 close to 3.5 is the best ration overall I believe Quote Link to comment Share on other sites More sharing options...
Leebo3 Posted August 6, 2006 Share Posted August 6, 2006 I imagine that a diff from a XA-XD coon you would need alot of power to turn (they are big fuckers), but the right ratio should be ok, I think. Quote Link to comment Share on other sites More sharing options...
Gaz Posted August 6, 2006 Share Posted August 6, 2006 They are strong diffs. heavy as hell however. Dunno bout straight bolt into housing you have. Quote Link to comment Share on other sites More sharing options...
corrupt Posted August 6, 2006 Author Share Posted August 6, 2006 the housing is a borgwarner, bolts straight into a cortina, but has the same guts in it as a falcon as this cortina came out with the falcon 6cly in it factory. Quote Link to comment Share on other sites More sharing options...
SYKOV6 Posted August 7, 2006 Share Posted August 7, 2006 are u sure your aussie diff is a 3.75 ratio ive owned a couple of 4.1 cortys and most are 2.75ratio or 2.92 which is the same as most falcons xr-xf .utes are all 3.5 xcept v8s which are 2.92 or 3.25. also vl-vp commy heads are also same vn 2litre are 4.11 ratio vl 3lt are 3.45. nissan navara ute is also borg warner 78 series Quote Link to comment Share on other sites More sharing options...
crazy_rich Posted August 7, 2006 Share Posted August 7, 2006 are u sure your aussie diff is a 3.75 ratio ive owned a couple of 4.1 cortys and most are 2.75ratio or 2.92 which is the same as most falcons xr-xf .utes are all 3.5 xcept v8s which are 2.92 or 3.25. also vl-vp commy heads are also same vn 2litre are 4.11 ratio vl 3lt are 3.45. nissan navara ute is also borg warner 78 series Good stuff Dave, someone sticky that shit. Quote Link to comment Share on other sites More sharing options...
WDE_BDY Posted August 7, 2006 Share Posted August 7, 2006 DELETED Quote Link to comment Share on other sites More sharing options...
SYKOV6 Posted August 7, 2006 Share Posted August 7, 2006 yeag u might b right callum early ford is mostly 28spline but some of the later ford/holden could be 31 not sure on that one Quote Link to comment Share on other sites More sharing options...
corrupt Posted August 7, 2006 Author Share Posted August 7, 2006 are u sure your aussie diff is a 3.75 ratio ive owned a couple of 4.1 cortys and most are 2.75ratio or 2.92 which is the same as most falcons xr-xf .utes are all 3.5 xcept v8s which are 2.92 or 3.25. also vl-vp commy heads are also same vn 2litre are 4.11 ratio vl 3lt are 3.45. nissan navara ute is also borg warner 78 series nah, my standard 2L nz diff which is in the car atm is 3.75 ratio. im takin the diff out of a aussie cortina i just picked up which has all the 6cly running gear, i think im only looking for an lsd diff head from a xa-xd falcon with a ratio of 3.2? or higher?? was thinking maybe the head out of this one: http://www.trademe.co.nz/Browse/Listing.aspx?id=65209263 ??? Quote Link to comment Share on other sites More sharing options...
crazy_rich Posted August 7, 2006 Share Posted August 7, 2006 Id buy the brakes off u if you didnt need them Quote Link to comment Share on other sites More sharing options...
WDE_BDY Posted August 7, 2006 Share Posted August 7, 2006 DELETED Quote Link to comment Share on other sites More sharing options...
corrupt Posted August 7, 2006 Author Share Posted August 7, 2006 Thats actually quite pricey, I paid $50 for a complete XF front suspension, diff and an EA diff (both LSD). If you look around shouldn't be hard to find one in a bogans back yard for a box of piss.Callum but xa-xd parts are probably less common? theres heaps of xf diffs around but i dont think they fit. Quote Link to comment Share on other sites More sharing options...
corrupt Posted August 7, 2006 Author Share Posted August 7, 2006 Id buy the brakes off u if you didnt need them if i get it yeh, all i want is the diffhead. Quote Link to comment Share on other sites More sharing options...
WDE_BDY Posted August 7, 2006 Share Posted August 7, 2006 DELETED Quote Link to comment Share on other sites More sharing options...
Random Posted August 24, 2006 Share Posted August 24, 2006 i think they machined the axles down to acept the different berrings needed to run the disc brakes. Was told to avoid them (V8 aplications anyway) as they snap axles at this point like carrots. But for 2L application they probly fine Quote Link to comment Share on other sites More sharing options...
SYKOV6 Posted August 24, 2006 Share Posted August 24, 2006 that is because when they machine the new spline on the axle when it is shortened they machine thru the factory 'hardening' which is in the outermost layer of the metal. thus making the new axle actually weaker than the original one. some machinists cut the axle away from the spline and weld it together making a 'v' then filling with weld. BRE engineering here uses this method and garantee the axle wont break. the fact is ANY heating of thr metal will weaken it to a certain extent. the guy i work with is using BRE axles in his 10sec rx3 and he hasnt busted one yet. he has 300kw @wheels and dumps clutch at 9000rpm on slicks so they cant be that bad. Quote Link to comment Share on other sites More sharing options...
corrupt Posted November 2, 2006 Author Share Posted November 2, 2006 can anyone tell me/ tell me a place on the internet where i could find out what the code on the diffhead would be if it was a 3.23 lsd? would the numbers on the diff be 026073M and 731 ? cheers Quote Link to comment Share on other sites More sharing options...
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