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View Full Version : Help: Size Difference between drive shafts

vlads2jz
12-04-2007, 03:43 PM
Ok heres my deal/problem that nobody can answer. I have a 95 Supra 6 speed with a NA 5 speed differential. It was all great untill I went to the track and destroyed that diff. I bought an AUTO TT differential. My question is : Is there a size difference between just the REAR half of the driveshafts of a NA 5 speed and AUTO TT? My driveshaft seems that its a little short when trying to bolt it on the Auto TT diff. When bolting the driveshaft to the differential with the center bearing completely off, then trying to bolt the center bearing onto the frame it wont reach. And im assuming the axles are the same because those seemed to fit good. Im hoping I can get a better answer here then on SupraForums.
LexusFTW
12-04-2007, 04:10 PM
The axles will work. You will need to get the rear shaft from an auto supra.
vlads2jz
12-04-2007, 05:53 PM
The axles will work. You will need to get the rear shaft from an auto supra.

Should have asked you in the first place. You wouldnt happen to have one would you? Besides that car still runs like a champ.

So the rear shaft from NA 5 speed/ 6 speed / and AUTO TT are all different sizes?
LexusFTW
12-04-2007, 06:12 PM
Sry, I dont have one...

Im glad the car is running good. Have you had the car on a dyno? Im curious as to how much power you were making when the stock diff let go. Were you launching the car? Street tires or drag radials?

Yes, the driveshafts are different...

http://www.trademotion.com/partlocator/index.cfm?action=getLocator&siteid=213747&chapter=APM807&appSectionid=23&groupid=10047&subgroupid=20112&componentid=60447&make=34&model=Supra&year=1995&catalogid=1
vlads2jz
12-04-2007, 06:48 PM
Sry, I dont have one...

Im glad the car is running good. Have you had the car on a dyno? Im curious as to how much power you were making when the stock diff let go. Were you launching the car? Street tires or drag radials?

Yes, the driveshafts are different...

http://www.trademotion.com/partlocator/index.cfm?action=getLocator&siteid=213747&chapter=APM807&appSectionid=23&groupid=10047&subgroupid=20112&componentid=60447&make=34&model=Supra&year=1995&catalogid=1
The car put down 427whp on race gas 21psi. I was launching with a 2 step on nitto drag radials. Had some wheel hop and learned my lesson. 12.0@119 with a 1.9 60ft
LexusFTW
12-04-2007, 07:06 PM
WOW!! I really miss that car...
Are you running the phillip long 2 step?
vlads2jz
12-04-2007, 09:35 PM
WOW!! I really miss that car...
Are you running the phillip long 2 step?

No I purchased the Rush 2 step from Jason Rush. Seems to work great builds boost awesome and shoots some nice flames we all like.
LexusFTW
12-04-2007, 09:38 PM
O...Again, I'm glad you like the car and it's doing so well!!

Stick around on ClubNA-T!
vlads2jz
12-04-2007, 09:41 PM
Will do ;) .. Do you know which rear halves of driveshafts are the same? Or are they all different, na 5 speed, auto tt, tt 6speed. na auto?
LexusFTW
12-04-2007, 09:46 PM
The rear driveshaft from a auto TT car is longer than the rear shaft from a 6spd car.
You're safest bet would be to keep the front shaft and try to find an auto rear shaft.
the front shaft is specifically for the 6spd. The problem with your car currently is solely the rear shaft. With the auto TT rear shaft you shouldnt have any problems putting it together.
Are there any other supra owners in the area you could borrow a shaft from?
LexusFTW
12-04-2007, 09:48 PM
I found your answer...

http://www.mkiv.com/techarticles/auto_to_6spd_swap/differential/index.html
vlads2jz
12-04-2007, 09:49 PM
Not exactly. If anything I will give Don a call at Accelerated Performance he will help me out but I put the car away for winter. Ill just have to buy/trade for a rear half from an Auto TT.
vlads2jz
12-04-2007, 09:51 PM
I found your answer...

http://www.mkiv.com/techarticles/auto_to_6spd_swap/differential/index.html

Yea I saw that but I was wondering weather the NA 5 speed rear half would be the same as the 6 speed rear half so I can offer people trades.
toyota1515
12-06-2007, 01:11 AM
if i was you i save some $$$ and custom build a one pice driveshaft to hold more power and less bind in the drivetrain!
vlads2jz
12-06-2007, 02:24 AM
if i was you i save some $$$ and custom build a one pice driveshaft to hold more power and less bind in the drivetrain!

Why not buy a stronger one? I would but money isnt coming in to great these days.
toyota1515
12-06-2007, 08:33 AM
Why not buy a stronger one? I would but money isnt coming in to great these days.

i feel you bro, a good driveshaft shop will not charge you more than $350 for a quality one, the key to keep it low cost is to avoid telling the guy is for a supra or lexus, hahahahaha, but i know when things go tuff is a PITA to spend on stuff like this!
TopNotchNA-T
12-07-2007, 12:47 AM
You have a 6spd complete driveshaft.

How did you use a complete 6 speed driveshaft with the 5-speed NA rear end? I didn't think that was a direct swap.
LexusFTW
12-07-2007, 09:37 AM
How did you use a complete 6 speed driveshaft with the 5-speed NA rear end? I didn't think that was a direct swap.

Hes using a 6spd front shaft with the stock 5spd rear shaft.
ElitistK
12-19-2007, 01:34 AM
if i was you i save some $$$ and custom build a one pice driveshaft to hold more power and less bind in the drivetrain!

people who do 2jzgt swap on Aristo's actually get custom driveshafts because the 4spd auto is longer than the 5spd auto. A custom driveshaft should cost around $350 in socal, and probably no more than $500 for something that will handle as much as your v16x will.

if you have an access to an used one cheaper than a new custom driveshaft, then go ahead and get it. If you're going to buy OEM driveshaft, I'd say consider the custom one.