tkddav3 Posted January 9, 2013 Share Posted January 9, 2013 hey ma brudddddas! well as some of you know that i blew my diff, my vin plate sais it has an a02b diff so thats what im going with. my question is what diff types will fit? without having to change the prop or driveshafts ect? and what are the differences between the diff's? and before you all say...yes ive used the search button! cheers bro's n hoes Quote Link to comment Share on other sites More sharing options...
Ross C Posted January 9, 2013 Share Posted January 9, 2013 Something to do with ratios. Thats my input. Hoe out. Quote Link to comment Share on other sites More sharing options...
tkddav3 Posted January 9, 2013 Author Share Posted January 9, 2013 Something to do with ratios. Thats my input. Hoe out. that was useless information...but a good effort none the less you can sleep out of your cage tonight. Quote Link to comment Share on other sites More sharing options...
TheTurtleshead Posted January 9, 2013 Share Posted January 9, 2013 (edited) I think the below is correct.... The first letter denotes the size of the casing & crown wheel: I.e. A = small 200mm CW, B= Large 220mm CW. The last letter denotes if it's an Open or Limited Slip Differential: A= Open, B=LSD. The 0 never seems to change. The number/3rd character denotes the ratio. e.g. yours is two, so your ratio is 3.769:1. I'd look out for a B03B, big case LSD stock torsen if you want a cheap strong option, with the J-Spec TT6 ratio 3.266:1, this will improve your economy as well at a cruise, but you will lose acceleration. However, i'm not sure if you need a different prop for that.... the flange on the big case is bigger and it sits further forward in the tunnel. the rear section of your prop might have been swapped? However if you happen to enjoy proper traction, i'd look out for big case diff with a TRD LSD with the ratio of your choice. Edited January 9, 2013 by TheTurtleshead (see edit history) Quote Link to comment Share on other sites More sharing options...
skippyboyo1 Posted January 9, 2013 Share Posted January 9, 2013 Mines a 93 na and I have a 99 tt diff fitted if that helps - - - Updated - - - As a direct replacement Quote Link to comment Share on other sites More sharing options...
Littler Posted January 9, 2013 Share Posted January 9, 2013 Any help? Quote Link to comment Share on other sites More sharing options...
Ross C Posted January 9, 2013 Share Posted January 9, 2013 I think the below is correct.... The first letter denotes the size of the casing & crown wheel: I.e. A = small 200mm CW, B= Large 220mm CW. The last letter denotes if it's an Open or Limited Slip Differential: A= Open, B=LSD. The 0 never seems to change. The number/3rd character denotes the ratio. e.g. yours is two, so your ratio is 3.769:1. I'd look out for a B03B, big case LSD stock torsen if you want a cheap strong option, with the J-Spec TT6 ratio 3.266:1, this will improve your economy as well at a cruise, but you will lose acceleration. However, i'm not sure if you need a different prop for that.... the flange on the big case is bigger and it sits further forward in the tunnel. the rear section of your prop might have been swapped? However if you happen to enjoy proper traction, i'd look out for big case diff with a TRD LSD with the ratio of your choice. You sir, get an A+ Quote Link to comment Share on other sites More sharing options...
listy Posted January 9, 2013 Share Posted January 9, 2013 You sir, get an A+ And a sticker! Quote Link to comment Share on other sites More sharing options...
Ross C Posted January 9, 2013 Share Posted January 9, 2013 And a sticker! A gold one. Wait, no, two gold ones!! Quote Link to comment Share on other sites More sharing options...
mattdavies Posted January 9, 2013 Share Posted January 9, 2013 However, i'm not sure if you need a different prop for that.... the flange on the big case is bigger and it sits further forward in the tunnel. the rear section of your prop might have been swapped? However if you happen to enjoy proper traction, i'd look out for big case diff with a TRD LSD with the ratio of your choice. I believe you need to swap one of the drive shafts (maybe the left one ) as the diff is wider one side. Quote Link to comment Share on other sites More sharing options...
Mario Posted January 9, 2013 Share Posted January 9, 2013 (edited) Have a look over here, very interesting article which notes the prop and driveshaft differences when changing to an big case diff. http://mkiv.com/techarticles/auto_to_6spd_swap/differential/index.html Edited January 9, 2013 by Mario (see edit history) Quote Link to comment Share on other sites More sharing options...
James Posted January 10, 2013 Share Posted January 10, 2013 Yep, an A02B is a small case, 3.769:1 LSD (found commonly in the TT Auto). Drive shafts would have to change for the B03B I'd have thought?! Also, when I changed from an A01A (4.083:1 open diff) to an A02B I had to change the diff flange as well as it was to be mated to my W58 5 speed box. Quote Link to comment Share on other sites More sharing options...
tkddav3 Posted January 10, 2013 Author Share Posted January 10, 2013 cheers for the info guys! ideally im still after an a02b! anyone got one? Quote Link to comment Share on other sites More sharing options...
Kaan W Posted February 13, 2013 Share Posted February 13, 2013 What about the UK spec models do they all have a big case? Quote Link to comment Share on other sites More sharing options...
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