adrian_celati Donating Members 82 Member For: 16y 3m 19d Gender: Male Posted 10/01/12 07:30 AM Share Posted 10/01/12 07:30 AM Hi. Does anyone know if you can get 3.1 (or there abouts) diff gears for a BFII Auto XR6T sedan?? Who are reputable makes/retailers? Are they hard to install?Cheers. Link to comment https://www.fordxr6turbo.com/forum/topic/78462-31-diff-gears-for-bfii-xr6t-automatic/ Share on other sites More sharing options...
knoles Donating Members 390 Member For: 14y 1m 13d Gender: Male Location: Port Hedland Posted 10/01/12 11:41 AM Share Posted 10/01/12 11:41 AM (edited) Ive heard of people getting 3.23 gears done. I have no idea where from though. Id probably hit up the tuners or diff mobs for more infoIf you dont really know what your doing ya should just get it rebuilt. could save a heap of cash by removing it yourself though. Edited 10/01/12 11:43 AM by knoles Link to comment https://www.fordxr6turbo.com/forum/topic/78462-31-diff-gears-for-bfii-xr6t-automatic/#findComment-1179233 Share on other sites More sharing options...
fadz Member 35 Member For: 14y 6m 18d Posted 11/01/12 07:20 AM Share Posted 11/01/12 07:20 AM Are you in Sydney?I have been advised by most shops for 3.2 or max 3.4 behind the ZF 6 speed. Any more 1st gear will be way too short Link to comment https://www.fordxr6turbo.com/forum/topic/78462-31-diff-gears-for-bfii-xr6t-automatic/#findComment-1179422 Share on other sites More sharing options...
BRK Member 361 Member For: 13y 4m 16d Gender: Male Location: Perth Posted 11/01/12 07:41 AM Share Posted 11/01/12 07:41 AM With respect, why do this? It will make stuff all difference to the way the car actually goes. It will cost a fortune as well - and the money could be spent on 50 other things to improve the actual road feel of the car. Link to comment https://www.fordxr6turbo.com/forum/topic/78462-31-diff-gears-for-bfii-xr6t-automatic/#findComment-1179429 Share on other sites More sharing options...
adrian_celati Donating Members 82 Member For: 16y 3m 19d Gender: Male Posted 11/01/12 08:22 AM Author Share Posted 11/01/12 08:22 AM (edited) On 11/01/2012 at 7:20 AM, fadz said: Are you in Sydney?I have been advised by most shops for 3.2 or max 3.4 behind the ZF 6 speed. Any more 1st gear will be way too shortNah in Brisbane, yeah wouldn't want to go shorter than 3.2 though I think 2.73 is too tall. Edited 11/01/12 08:23 AM by adrian_celati Link to comment https://www.fordxr6turbo.com/forum/topic/78462-31-diff-gears-for-bfii-xr6t-automatic/#findComment-1179440 Share on other sites More sharing options...
adrian_celati Donating Members 82 Member For: 16y 3m 19d Gender: Male Posted 11/01/12 08:29 AM Author Share Posted 11/01/12 08:29 AM On 11/01/2012 at 7:41 AM, BRK said: With respect, why do this? It will make stuff all difference to the way the car actually goes. It will cost a fortune as well - and the money could be spent on 50 other things to improve the actual road feel of the car.No worries. Have been looking in to it and probably better off just getting more power with a custom tune. I just think gearing's a bit too tall - does 3rd gear really need to go up to 180? It might be a nicer car to drive on a hilly, winding road with shorter gearing.What initially made me think of this was when I went for a ride in a focus XR5 with a few mods - around 190kw atw and it feels like it pulls a lot harder in 2nd and 3rd with the shorter gearing. Guess I'll just have to go for more power! Link to comment https://www.fordxr6turbo.com/forum/topic/78462-31-diff-gears-for-bfii-xr6t-automatic/#findComment-1179442 Share on other sites More sharing options...
fadz Member 35 Member For: 14y 6m 18d Posted 11/01/12 08:41 AM Share Posted 11/01/12 08:41 AM On 11/01/2012 at 7:41 AM, BRK said: With respect, why do this? It will make stuff all difference to the way the car actually goes. It will cost a fortune as well - and the money could be spent on 50 other things to improve the actual road feel of the car.It doesn't cost a fortune if you get a exchange reco diff centre with it already loaded with the gears (shops in syd and melb do this) Swap it over and fit the diff centre yourself.Further more it does make a difference, it significantly shortens your gears. Car comes on boost quicker, guys with bigger turbos and bigger lag time need this. With the ZF you shouldn't go too short 3.2 from what I gather.My old 5.0ltre Late model camira was a completely different car when I fitted 4.11s with that 4speed auto. N/A and 4speed is something else though. Link to comment https://www.fordxr6turbo.com/forum/topic/78462-31-diff-gears-for-bfii-xr6t-automatic/#findComment-1179450 Share on other sites More sharing options...
Paulie2256 Donating Members 7,441 Member For: 16y 5m 8d Gender: Male Location: SE Melbourne Posted 11/01/12 09:18 AM Share Posted 11/01/12 09:18 AM (edited) 3.23 is the standard ratio for 4 spd.2.73 zf3.73 6spd man3.1 is not a standard ratio so will cost a lot to do. Edited 11/01/12 09:19 AM by Paulie2256 Link to comment https://www.fordxr6turbo.com/forum/topic/78462-31-diff-gears-for-bfii-xr6t-automatic/#findComment-1179470 Share on other sites More sharing options...
knoles Donating Members 390 Member For: 14y 1m 13d Gender: Male Location: Port Hedland Posted 11/01/12 10:26 AM Share Posted 11/01/12 10:26 AM (edited) I thought 4 spd XR was a 3.45 ratio and family spec single spinner is 3.23? if it is a 3.23 it would probably be easier to get a ba 4 spd diff from a wreckers? I assume a BA diff will fit a BF that is? Edited 11/01/12 10:34 AM by knoles Link to comment https://www.fordxr6turbo.com/forum/topic/78462-31-diff-gears-for-bfii-xr6t-automatic/#findComment-1179506 Share on other sites More sharing options...
Paulie2256 Donating Members 7,441 Member For: 16y 5m 8d Gender: Male Location: SE Melbourne Posted 11/01/12 11:22 AM Share Posted 11/01/12 11:22 AM (edited) My mistake, you are correct.I just double checked. Edited 11/01/12 11:25 AM by Paulie2256 Link to comment https://www.fordxr6turbo.com/forum/topic/78462-31-diff-gears-for-bfii-xr6t-automatic/#findComment-1179533 Share on other sites More sharing options...
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