Moose Member 185 Member For: 17y 29d Gender: Male Location: Ipswich, QLD Posted 22/06/09 12:39 AM Share Posted 22/06/09 12:39 AM Hey crew,Driving back from a mates the other night and decided to get into it, and that's when it happened. BANG. No more diff.So, its a 2006 BF MKI F6 ZF 6 Speed, what diff centre should I put in it? I've heard they make a 9" bolt in centre kit now days? I have my workshop chasing that up now. What gears should I run? The car is fairly standard now but will be worked on over time to be quicker.Cheers. Link to comment https://www.fordxr6turbo.com/forum/topic/58785-so-i-blew-my-diff/ Share on other sites More sharing options...
XR06T Silver Donating Members 4,146 Member For: 19y 10m 23d Gender: Male Posted 22/06/09 12:54 AM Share Posted 22/06/09 12:54 AM you sure its the diff and not an axle?that will cause no drive and a whirring noise also.. Link to comment https://www.fordxr6turbo.com/forum/topic/58785-so-i-blew-my-diff/#findComment-894389 Share on other sites More sharing options...
Moose Member 185 Member For: 17y 29d Gender: Male Location: Ipswich, QLD Posted 22/06/09 01:05 AM Author Share Posted 22/06/09 01:05 AM There is a 50m oil trail from point of bang to where I stopped. And it smells like diff oil. And the centre is very loud. Its a diff. Haha Link to comment https://www.fordxr6turbo.com/forum/topic/58785-so-i-blew-my-diff/#findComment-894391 Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 18y 3m 9d Gender: Male Location: SW Sydney Posted 22/06/09 01:07 AM Share Posted 22/06/09 01:07 AM I would recommend leaving the same diff ratio in it. 1st gear in the ZFs is very short, so a shorter diff would make 1st almost useless IMHO Link to comment https://www.fordxr6turbo.com/forum/topic/58785-so-i-blew-my-diff/#findComment-894393 Share on other sites More sharing options...
Moose Member 185 Member For: 17y 29d Gender: Male Location: Ipswich, QLD Posted 22/06/09 01:37 AM Author Share Posted 22/06/09 01:37 AM I thought you could retune the ZF gearbox so that even with a shorter ratio diff, the box handles it fairly well? Who knows - its going to a diff shop soon, so ill have the answers shortly. Link to comment https://www.fordxr6turbo.com/forum/topic/58785-so-i-blew-my-diff/#findComment-894409 Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 18y 3m 9d Gender: Male Location: SW Sydney Posted 22/06/09 01:58 AM Share Posted 22/06/09 01:58 AM The gears inside the box will still be the same though... Link to comment https://www.fordxr6turbo.com/forum/topic/58785-so-i-blew-my-diff/#findComment-894420 Share on other sites More sharing options...
ms700 Moderating Team 10,170 Member For: 22y 3m 15d Gender: Male Location: Sydney Posted 22/06/09 03:42 AM Share Posted 22/06/09 03:42 AM lol @ tuning the ZF to change the ratio's. Link to comment https://www.fordxr6turbo.com/forum/topic/58785-so-i-blew-my-diff/#findComment-894450 Share on other sites More sharing options...
Moose Member 185 Member For: 17y 29d Gender: Male Location: Ipswich, QLD Posted 22/06/09 05:31 AM Author Share Posted 22/06/09 05:31 AM I'm not that stupid to think that the gear box controls the diff gears, I get how that works. I thought I had read somewhere that the ZF gear box was able to be programmed to run with different diff gears and somehow changed something around in the gearbox to do so.How ever, this could be on the ZF 8 Speed in the new 2010 760Li BMW's I was reading about, Dad is looking at getting one so I did some research. Link to comment https://www.fordxr6turbo.com/forum/topic/58785-so-i-blew-my-diff/#findComment-894484 Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 18y 3m 9d Gender: Male Location: SW Sydney Posted 22/06/09 05:40 AM Share Posted 22/06/09 05:40 AM I'd say the most "re-tuning" you could do was so that the speedo was correct, however I'm pretty sure it gets the speed from the wheel speed sensors...Needless to say, gears are gears, unless you change the ratios in the box the rpm will be higher with a shorter diff ratio. You could go slightly shorter, but if you already struggle with traction in 1st, forget about it with shorter gears... Link to comment https://www.fordxr6turbo.com/forum/topic/58785-so-i-blew-my-diff/#findComment-894486 Share on other sites More sharing options...
Moose Member 185 Member For: 17y 29d Gender: Male Location: Ipswich, QLD Posted 22/06/09 05:58 AM Author Share Posted 22/06/09 05:58 AM At the moment - no issues with traction. How ever I just have exhaust and injectors, so not a huge amount of work done. Its at the shop now and I'm getting a quote for a 9" centre kit, along with just replacing the standard diff. The guy down there told me there is a different ratio I can use that is better/more suited for the ZF? Anyone know what that might be?Ill update soon. Link to comment https://www.fordxr6turbo.com/forum/topic/58785-so-i-blew-my-diff/#findComment-894498 Share on other sites More sharing options...
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