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View Full Version : S15 HLSD VS Quaife VS Q45 side flanges

Nismo_420sx
07-03-2009, 04:24 PM
I just got done trying to fit an S15 HLSD into a Q45 housing with the Q45 6 bolt side flanges. Turns out the S15 differential will not work with the Q45 flanges. Will a Quaife HLSD made for the R200 differential work with the Q45 side flanges? Or are there any other options?
smelly240
07-03-2009, 04:36 PM
isnt the q45 diff similar to the z32TT one? Perhaps a tt z32 lsd would work (like a cusco/kaaz/nismo)
Nismo_420sx
07-03-2009, 04:52 PM
They are similar, but afaik the similarity ends at the bolt pattern of the axles. I think internally the z32 tt (R230) is a physically larger differential than the Q45 (R200). Let me know if i'm wrong.
GSXRJJordan
07-03-2009, 04:53 PM
isnt the q45 diff similar to the z32TT one? Perhaps a tt z32 lsd would work (like a cusco/kaaz/nismo)

Yeah most of the Q45 stuff is 300ZX TT-sized. The Z32 LSDs you listed are all clutch-type though, and it looks like he's interested in helical.

Is there a reason you're trying to stick with Q45 output shafts? You use whatever output shafts fit the LSD, then mate that to your axles. 5-bolt or 6-bolt output shafts from an S-chassis fit the S15 HLSD don't they?
Nismo_420sx
07-03-2009, 06:31 PM
Yeah most of the Q45 stuff is 300ZX TT-sized.
Could you explain what you mean by most of the stuff. Is the 300zx tt internals the same size as the Q45 and every other R200 diff?

I am trying to use the Q45 output shafts because I am swapping an LS1 into my car. So I need the beefier axles that come on the Q45. If I thought the stock axles would support the torque of the V8 I would just use the S15 output shafts.
GSXRJJordan
07-03-2009, 08:28 PM
Could you explain what you mean by most of the stuff. Is the 300zx tt internals the same size as the Q45 and every other R200 diff?

I am trying to use the Q45 output shafts because I am swapping an LS1 into my car. So I need the beefier axles that come on the Q45. If I thought the stock axles would support the torque of the V8 I would just use the S15 output shafts.

The hubs are the same size, and they use the same diff I believe. I'm not sure the output shafts are going to make the difference - usually it's the axles CV that breaks, not the output shaft. I'd use the S15 output shafts - they should mate up to whatever axles you're planning on using.