q45 rear end

[lukeduke1]

i have a s13 with a q45 rear diff in it and would like to get a 2 way lsd. are there any aftermarket options?

[compactfean]

Not to my knowledge. You would have to go back to 240 output shafts and axles but the 240 2 way will still fit.

[lukeduke1]

i was thinking maybe a lsd for a 300zx tt would fit. and i herd someone mention a bnr32 skyline would work also but i want to make sure before i buy anything.

[csramotorsports]

Probably a 300zx NA lsd would fit, it uses the same diff housing at least. The TT rear uses the r230 not 200

[csramotorsports]

I will be needing to find out what fits pretty soon myself...

[lukeduke1]

Yea but the Na 300 has 29 spline output shafts I'm pretty sure.
The tt is 30 like the q45. That's why I was thinking that

[compactfean]

Yeah but of you get a 2way for the tt, that would mean you would need to bolt up a 230mm ring gear, yes the tt and q45 have the same spline count but what you need to find out is if you're 200mm ring gear will bolt to the tt 2way that is meant for a 230mm ring gear. I would hit up the 300zx forum and see if anyone has ever put 240sx ring and pinion in there twin Turbo. If they have than putting a tt 2way in a q45 will work. Im sure it will not be a direct bolt in affair.

[lukeduke1]

good point.