mk1its Posted February 19, 2014 Share Posted February 19, 2014 Guys Just a few simple questions in regards to going 6sp. In 2013 I went the w58 5sp route and this year I'll be going either the v160 or v161 route. With having all the tunnel and pedal work done already, is it simply a case of buying a gearbox and prop and bolting it all together? Obviously I'll need a clutch and flywheel but can I use the diff from when I was auto TT and all the clutch/brake cylinders/lines/pedals from the w58 or are they all different? Thanks in advance Mark Link to comment Share on other sites More sharing options...
David P Posted February 19, 2014 Share Posted February 19, 2014 You'll need to swap the master and slave. Link to comment Share on other sites More sharing options...
hogmaw Posted February 19, 2014 Share Posted February 19, 2014 You'll need a 6 speed diff, the one with the auto TT will work but the ratios mean you'll be in 6th gear at 30-40mph! Link to comment Share on other sites More sharing options...
David P Posted February 19, 2014 Share Posted February 19, 2014 You'll need a 6 speed diff, the one with the auto TT will work but the ratios mean you'll be in 6th gear at 30-40mph! Bunkum. Link to comment Share on other sites More sharing options...
hogmaw Posted February 19, 2014 Share Posted February 19, 2014 (edited) Bunkum. Speaking from experience. So why my gear ratios wrong? Edited February 19, 2014 by hogmaw (see edit history) Link to comment Share on other sites More sharing options...
David P Posted February 19, 2014 Share Posted February 19, 2014 http://www.mkivsupra.net/vbb/showthread.php?225050-Supra-specific-gear-diff-ratio-and-tyre-size-calculator Link to comment Share on other sites More sharing options...
hogmaw Posted February 19, 2014 Share Posted February 19, 2014 Thanks for that. Can the ratios be altered then? I'm actually in the process of spending over £1000 on a new diff that might not be necessary!!! Link to comment Share on other sites More sharing options...
David P Posted February 20, 2014 Share Posted February 20, 2014 The crown wheel and pinion can be changed to alter ratio, yet it's a skilled procedure to shim correctly. Link to comment Share on other sites More sharing options...
Benjy Posted February 20, 2014 Share Posted February 20, 2014 I've just swapped out my A01A diff in my TT Auto for an A02B from my old V161 set up. The only difference is it goes sideways better and leaves 11's instead of 1's. Link to comment Share on other sites More sharing options...
hogmaw Posted February 20, 2014 Share Posted February 20, 2014 The crown wheel and pinion can be changed to alter ratio, yet it's a skilled procedure to shim correctly. I don't think machining the diff is an option that I have Link to comment Share on other sites More sharing options...
David P Posted February 20, 2014 Share Posted February 20, 2014 There's no machining, just swap in the crown and pinion that gives the ratio you want. Link to comment Share on other sites More sharing options...
mk1its Posted February 20, 2014 Author Share Posted February 20, 2014 I've just swapped out my A01A diff in my TT Auto for an A02B from my old V161 set up. The only difference is it goes sideways better and leaves 11's instead of 1's. Interesting, so I should be ok then.... What power can the auto TT diff handle? Link to comment Share on other sites More sharing options...
thetrashcanman Posted February 21, 2014 Share Posted February 21, 2014 You'll need a 6 speed diff, the one with the auto TT will work but the ratios mean you'll be in 6th gear at 30-40mph! You may be in 6th at that speed but what rpm? Link to comment Share on other sites More sharing options...
Benjy Posted February 21, 2014 Share Posted February 21, 2014 You may be in 6th at that speed but what rpm? My NA went from 20mph quite happily all the way round to 112 when I hit the brick wall that is the limiter. Link to comment Share on other sites More sharing options...
hogmaw Posted February 21, 2014 Share Posted February 21, 2014 There's no machining, just swap in the crown and pinion that gives the ratio you want. Which means I have to find a crown/pinion and get then find someone to fit them properly, might as well just get a ready-made 6 speed dif! Link to comment Share on other sites More sharing options...
Benjy Posted February 21, 2014 Share Posted February 21, 2014 Some auto's had an A02B from the factory. It's not a 6 speed diff, just a LSD. What diff have you got currently? Link to comment Share on other sites More sharing options...
james_cbr Posted February 23, 2014 Share Posted February 23, 2014 interesting im doing the exact same thing to mine w58 to 6 speed and was just thinking about the diff im currently na with a a01a open diff can I use this still in till I drop my tt lump in ? Link to comment Share on other sites More sharing options...
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