Guest supra_staffy Posted May 27, 2012 Share Posted May 27, 2012 (edited) Been looking at this for a while now. Has anyone done this? If so, whats envolved? straight swap or will i need the drive shafts from the AUTO aswell? With a Jspec AUTO TT diff fitted to my Jspec NA, it will make the gearing taller, correct? so when i go NA-TT next year ill be revving lower on them long motorway runs and better geared for the power! any info/opinions woud be great. or a TT6 diff will be even longer... cheers Edited May 27, 2012 by supra_staffy (see edit history) Quote Link to comment Share on other sites More sharing options...
Guest supra_staffy Posted May 28, 2012 Share Posted May 28, 2012 Got a auto tt diff lined up. Anyone got any info for me. I will be going tt next year so if it fits my 5 speed great! If not it will sit about till then. Quote Link to comment Share on other sites More sharing options...
straightsix Posted May 28, 2012 Share Posted May 28, 2012 You'll need the propshaft to suit, or change the diff flange. TT and NA diff flanges are different sizes Quote Link to comment Share on other sites More sharing options...
Oddball87 Posted May 28, 2012 Share Posted May 28, 2012 As far as i no it should bolt on. And as for the drive shafts mine where different lengths on my J spec TT Auto Quote Link to comment Share on other sites More sharing options...
Oddball87 Posted May 28, 2012 Share Posted May 28, 2012 I forgot about the prop lol Quote Link to comment Share on other sites More sharing options...
David P Posted May 28, 2012 Share Posted May 28, 2012 Most the info has been given, but in a nutshell, yes the diff will fit your car and the drive-shafts will fit too. However, there is not an OE Supra prop that has splined front and a large diff flange, so you would need to swap your N/A diff flange onto the T.T. diff. Quote Link to comment Share on other sites More sharing options...
Guest supra_staffy Posted May 29, 2012 Share Posted May 29, 2012 Most the info has been given, but in a nutshell, yes the diff will fit your car and the drive-shafts will fit too. However, there is not an OE Supra prop that has splined front and a large diff flange, so you would need to swap your N/A diff flange onto the T.T. diff. Great info chaps. So im better off buying the TT AUTO prop aswell and just to clarify my N/A driveshafts are ok or ill have to replace them too? cheers Quote Link to comment Share on other sites More sharing options...
David P Posted May 29, 2012 Share Posted May 29, 2012 (edited) Great info chaps. So im better off buying the TT AUTO prop aswell and just to clarify my N/A driveshafts are ok or ill have to replace them too? cheers Most the info has been given, but in a nutshell, yes the diff will fit your car and the drive-shafts will fit too. However, there is not an OE Supra prop that has splined front and a large diff flange, so you would need to swap your N/A diff flange onto the T.T. diff. That means; Use N/A prop, T.T. diff with N/A diff flange swapped onto it and your N/A drive-shafts will fit and be good for up to 500? ftlb. Edited May 29, 2012 by David P (see edit history) Quote Link to comment Share on other sites More sharing options...
Guest supra_staffy Posted May 29, 2012 Share Posted May 29, 2012 Clear as it comes that^ cheers Quote Link to comment Share on other sites More sharing options...
Dr_Doom Posted May 29, 2012 Share Posted May 29, 2012 Won't swappng your NA diff for a TT one give you a higher top speed but slower acceleration? Quote Link to comment Share on other sites More sharing options...
The Raven Posted May 29, 2012 Share Posted May 29, 2012 Same problem as me then! Quote Link to comment Share on other sites More sharing options...
David P Posted May 30, 2012 Share Posted May 30, 2012 (edited) Won't swappng your NA diff for a TT one give you a higher top speed but slower acceleration? A 3.769 on an N/A gives less top speed and slower acceleration, yet is a ratio that works well with 325+ bhpftlb. I have this ratio plus 18" wheels and 40 profile tyres on my N/A and it's pants, but when the charger goes on it will be perfect. Running a 3.769 on an N/A makes no sense at all unless it's in preparation for a number more than 300. Edited May 30, 2012 by David P (see edit history) Quote Link to comment Share on other sites More sharing options...
The Raven Posted May 30, 2012 Share Posted May 30, 2012 So. My diff i have for sale will mate up with no mods? to a 5 speed? And would be ok for stock TT power? Quote Link to comment Share on other sites More sharing options...
David P Posted May 30, 2012 Share Posted May 30, 2012 Yes and yes, but the 4.083 ratio is not really tall enough for T.T. power and the turbo's boost better pulling a 3.769. Quote Link to comment Share on other sites More sharing options...
Dr_Doom Posted May 30, 2012 Share Posted May 30, 2012 Running a 3.769 on an N/A makes no sense at all unless it's in preparation for a number more than 300. Cheers David, that's what i thought. If i was the OP i'd probably buy the diff but hold off from fitting it and change it at the same time as the TT conversion. There's no sense in making your car slower for a year Quote Link to comment Share on other sites More sharing options...
Guest supra_staffy Posted May 31, 2012 Share Posted May 31, 2012 Cheers David, that's what i thought. If i was the OP i'd probably buy the diff but hold off from fitting it and change it at the same time as the TT conversion. There's no sense in making your car slower for a year Yeh this is proberly what ill do. find one and hold onto it for a year. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.