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280zx diff swap question

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Old 02-24-2013, 04:59 PM
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280zx diff swap question

let me start by saying i have an 82 auto turbo(fresh motor rebuild) and a 80 NA 5 speed (completely rust free)
so heres where im at i dropped the whole rear end out of my 82 turbo cuz i wanted the diff and trail arms out of it plus had the shafts are rebuilt.
well any ways i notices that the flange is not the same on the diffs..
i found some info but they deal more with the older z's i just want some strait zx to zx info..

82 turbo R200diff and the 80 has the smaller R180 diff

can i just swap the diff flanges? do i need a different drive shaft? will the bolt holes still line up?
what can be done to fix this?
any help welcome
i have no problem modifying a shaft if i cant swap the diff flange just need to what options i have .

cant test fit cuz im not taking my 80 apart till i have everything ready for swap so i dont know if they're compatable
thanks..

Last edited by koprutzxt; 02-24-2013 at 07:16 PM.
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Old 02-24-2013, 07:27 PM
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are the 280zx t5 drive shaft the same length as the N/A 5speed drive shaft? can i use a T5 drive shaft with my N/A tranny??
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Old 02-24-2013, 07:43 PM
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Originally Posted by koprutzxt View Post
can i just swap the diff flanges?
Yes. Just remember that the auto, n/a 5spd, and BW T5 all use different driveshaft output splines.

Originally Posted by koprutzxt View Post
do i need a different drive shaft?
Depends on which transmission you use. If you are using the n/a 5 speed, you'll need the n/a driveshaft.

Originally Posted by koprutzxt View Post
will the bolt holes still line up?
Use the tranny driveshaft, and accompanying diff coupler.

Originally Posted by koprutzxt View Post
are the 280zx t5 drive shaft the same length as the N/A 5speed drive shaft?
2seaters are the same length as each other, 2+2's are the same length as each other.

Originally Posted by koprutzxt View Post
can i use a T5 drive shaft with my N/A tranny??
No.

When I swapped in my L28ET into my 81 n/a 5speed, I used the n/a driveshaft. When I swapped to the BW T5, I had to take my 2seater turbo driveshaft to Six States Driveline and have them lengthen & balance it for $100. Then I swapped in an 87 Z31T LSD 3.7 diff, and had to swap the 280zx turbo diff coupler over to the new diff as well.

Last edited by NismoPick; 02-24-2013 at 07:45 PM.
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Old 02-24-2013, 07:52 PM
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Originally Posted by koprutzxt View Post
are the 280zx t5 drive shaft the same length as the N/A 5speed drive shaft? can i use a T5 drive shaft with my N/A tranny??
Negative. See post 5 of this thread:

Turbo Trans or 280Z Trans - ZCAR.COM - Datsun : 240Z, 260Z, 280Z, 280ZX, 300ZX, 350Z, 370Z : Nissan
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