shervin_ice Posted July 20, 2019 Share Posted July 20, 2019 Hi all I’m planning to do r154 conversion on my other supra and the car is jap spec tt auto with A02A diff and I have another spare diff which is A02B LSD just wondering can I use A02B with my conversion? Thanks in advance Quote Link to comment Share on other sites More sharing options...
Mike2JZ Posted July 20, 2019 Share Posted July 20, 2019 Yes you can Quote Link to comment Share on other sites More sharing options...
shervin_ice Posted July 20, 2019 Author Share Posted July 20, 2019 Yes you can So I can either use my current one which is A02A or change it to A02B lsd ? Do you know which one is better to use with my conversion? Thanks Mike Quote Link to comment Share on other sites More sharing options...
Noz Posted July 21, 2019 Share Posted July 21, 2019 (edited) A01B will give you a better ratio, being the NA LSD. The TT auto diff will give you a longer gear and will feel a bit laggy. Edited July 21, 2019 by Noz (see edit history) Quote Link to comment Share on other sites More sharing options...
shervin_ice Posted July 21, 2019 Author Share Posted July 21, 2019 A01B will give you a better ratio, being the NA LSD. The TT auto diff will give you a longer gear and will feel a bit laggy. What about A02A open diff but from tt auto ? Thanks for your input [emoji106] Quote Link to comment Share on other sites More sharing options...
Noz Posted July 21, 2019 Share Posted July 21, 2019 What about A02A open diff but from tt auto ? Thanks for your input [emoji106] /QUOTE] It will have a longer drive for each gear. You'll have a higher speed for each gear. It will drag out each gear. LSD or Open doesn't make a difference to the ratio. Stick with a diff intended for an NA. Jekyl put a TT auto diff in his NAt years ago. He said it drove like the car was down on power if I remember correctly. Quote Link to comment Share on other sites More sharing options...
Mike2JZ Posted July 21, 2019 Share Posted July 21, 2019 If you already have an A02A in the car, and you want to put a A02B in the car then it will feel exactly the same in terms of ratio. The only difference will be when the back end steps out, it will feel more stable as A02B uses torsion LSD. Quote Link to comment Share on other sites More sharing options...
shervin_ice Posted July 21, 2019 Author Share Posted July 21, 2019 If you already have an A02A in the car, and you want to put a A02B in the car then it will feel exactly the same in terms of ratio. The only difference will be when the back end steps out, it will feel more stable as A02B uses torsion LSD. Okay but do you know if the NA DIFF can handle 550 to 650BHP or more bhp ? Quote Link to comment Share on other sites More sharing options...
Mike2JZ Posted July 21, 2019 Share Posted July 21, 2019 Okay but do you know if the NA DIFF can handle 550 to 650BHP or more bhp ? /QUOTE] A02b will be fine. They just dont like being launched on a sticky drag stri A02a will break after some time over 400 Quote Link to comment Share on other sites More sharing options...
Noz Posted July 23, 2019 Share Posted July 23, 2019 Okay but do you know if the NA DIFF can handle 550 to 650BHP or more bhp ? /QUOTE] I broke my open NA diff at 420hp. I hope my LSD will hold to the new horsepower. Mapped in next few weeks! Quote Link to comment Share on other sites More sharing options...
shervin_ice Posted July 23, 2019 Author Share Posted July 23, 2019 A02b will be fine. They just dont like being launched on a sticky drag stri A02a will break after some time over 400 So I might just use the A02B for safe side Thanks for your info [emoji6] Quote Link to comment Share on other sites More sharing options...
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