Bawwxay Member 60 Member For: 2y 9m 15d Posted 07/02/25 11:48 AM Share Posted 07/02/25 11:48 AM (edited) Now after much searching and research, I can’t find a definitive answer as to whether a 2005 BA MK|| XR6 that from factory opted with a 3.45 LSD is a M78 31 or 28 spline or an M86 from The XR6 turbos and xr8’s. the current LSD pegs but when on the hoist spins both in the same direction under no load and is in tip top shape. A definitive answer would be mint! Because I’m buying a Truetrac but need to know which one! 🤟 Edited 07/02/25 11:50 AM by Bawwxay Wrong info Link to comment https://www.fordxr6turbo.com/forum/topic/97386-ba-mk-lsd-diff/ Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 16,310 Member For: 10y 3m Gender: Male Location: South Australia Posted 07/02/25 11:59 AM Share Posted 07/02/25 11:59 AM Diff/trans shop will tell you straight away, just ring in the morning and report back. 1 Link to comment https://www.fordxr6turbo.com/forum/topic/97386-ba-mk-lsd-diff/#findComment-1725561 Share on other sites More sharing options...
Bawwxay Member 60 Member For: 2y 9m 15d Posted 07/02/25 12:02 PM Author Share Posted 07/02/25 12:02 PM Here in Tassie, the diff/trans shops will tell you anything to get you to not book in 🤣 Link to comment https://www.fordxr6turbo.com/forum/topic/97386-ba-mk-lsd-diff/#findComment-1725563 Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 16,310 Member For: 10y 3m Gender: Male Location: South Australia Posted 07/02/25 12:07 PM Share Posted 07/02/25 12:07 PM Haha they don't like pulling the rear subframe ay?! 1 Link to comment https://www.fordxr6turbo.com/forum/topic/97386-ba-mk-lsd-diff/#findComment-1725565 Share on other sites More sharing options...
Bawwxay Member 60 Member For: 2y 9m 15d Posted 07/02/25 12:11 PM Author Share Posted 07/02/25 12:11 PM They don’t like acknowledging any work that isn’t a Camry cabin filter replacement! 🤦♂️😝 1 Link to comment https://www.fordxr6turbo.com/forum/topic/97386-ba-mk-lsd-diff/#findComment-1725566 Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 16,310 Member For: 10y 3m Gender: Male Location: South Australia Posted 07/02/25 12:13 PM Share Posted 07/02/25 12:13 PM I'll ask the question tomorrow and should have a solid answer by Monday, unless someone else chimes in beforehand. 1 Link to comment https://www.fordxr6turbo.com/forum/topic/97386-ba-mk-lsd-diff/#findComment-1725567 Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,447 Member For: 17y 19d Gender: Male Location: Melbourne Posted 07/02/25 12:21 PM Share Posted 07/02/25 12:21 PM Had a mate with an N/A XR6 and it was NOT an LSD and spun one wheel, but I can't remember if it was M86 or M78... Link to comment https://www.fordxr6turbo.com/forum/topic/97386-ba-mk-lsd-diff/#findComment-1725570 Share on other sites More sharing options...
Bawwxay Member 60 Member For: 2y 9m 15d Posted 07/02/25 10:15 PM Author Share Posted 07/02/25 10:15 PM I definitely know that the XR6 N/A’s came with an M78 open centre, the difficult question to answer is whether when ‘rarely’ optioned for the LSD out of the factory, did they just change the centre of said M78 or just whack an M86 straight out of the XR8’s into them? Link to comment https://www.fordxr6turbo.com/forum/topic/97386-ba-mk-lsd-diff/#findComment-1725578 Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,447 Member For: 17y 19d Gender: Male Location: Melbourne Posted 07/02/25 10:39 PM Share Posted 07/02/25 10:39 PM I would imagine, from a business perspective, that they'd use the M86... but hard to say without an example... 1 Link to comment https://www.fordxr6turbo.com/forum/topic/97386-ba-mk-lsd-diff/#findComment-1725579 Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 16,310 Member For: 10y 3m Gender: Male Location: South Australia Posted 08/02/25 03:39 AM Share Posted 08/02/25 03:39 AM From the Tuff Car Parts website Fitment notes: Can be used in the original single spinner or LSD diff housing. Suitable for all BA BF FG 6 cylinder Turbo & V8 models fitted with M86 differential. Will not fit non turbo 6 cylinder models. 1 Link to comment https://www.fordxr6turbo.com/forum/topic/97386-ba-mk-lsd-diff/#findComment-1725580 Share on other sites More sharing options...
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