2nd Generation Specific 1986-1992 Discussion

How can you tell the differance between T2 and N/A drivetrain parts?

Old 09-18-2011, 07:45 PM
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So I have a 1990 N/A convertible that has and LSD. This week it stopped locking, and is acting like an open diff. From what I've read there was no N/A LSD offered in 1990. So how can I tell if mine is really a N/A or Turbo II diff? I'd also like to confirm whether my trans is originally out of a N/A or Turbo RX7...
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Old 09-18-2011, 08:06 PM
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well idk if the na and t2 trans have the same differences like with the s4 but the s4 na trans doesnt have a pan the s4 t2 trans has a pan on it
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Old 09-18-2011, 08:09 PM
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My transmission has a pan on it.



Supposedly all Verts came with an open diff, but mine had an LSD till early this week...
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Old 09-18-2011, 08:19 PM
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idk if the s5 na vs t2 had the same difference of a s4 since i have a s4 and i have a s4 t2 trans in my garage and a na on my car so thats how i know the s4 **** and know that difference as for the diff you might wanna check size and s5 did have a lsd but its a vlsd which you cant fix like the s4 lsd
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Old 09-18-2011, 08:26 PM
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I had just read that convertibles regardless of series didn't come stock with LSD. I've never heard of a VLSD going out either... Sure doesn't feel like the VLSD I used to drive (z32)...



The engagement got weaker and weaker over time, almost like a slipping clutch. From the feeling I'd have to assume I have a clutch type. but I dont know if there are any differences I could see without dropping the diff, and pops will kill me if I disassemble my car in his front yard again.



I'm considering just buying a FD diff thats for sale about an hour from my house and putting that in. as long as I have parts to fix it I can drop the diff.
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Old 09-18-2011, 08:30 PM
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If I know what kind of diff I have I can get one welded up for drifting until I can rebuild my current diff.... But it would suck to buy a N/A diff, or a T2 diff and find out its the wrong one...



or if I can confirm exactly what kind of diff I have I can determine if I can put in an FD unit thats for sale near my house.
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Old 09-18-2011, 08:39 PM
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yea there is a size difference in t2 to na and the fd diff will only fit a s4 t2 pumpkin and you could just pop the cover off the diff and see what it looks like if you happen to have a s4 t2 drive train on your s5 then you wont have issues with the fd diff install
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Old 09-18-2011, 09:00 PM
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So I confirmed it still stays locked for the most part on dirt, and last time it rained it still locked. But on dry pavement I have one tire fire...
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Old 09-18-2011, 09:20 PM
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Old 09-18-2011, 09:51 PM
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I measured 11" stub to stub (width) and 1'2"? from the driveshaft stub, to where the diff bolts together (visible in the pics)
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