Q45 diff

[laurentj23]

Do I have to get 96-01 diff to fit in the s14? I tried searching online about the dimensions but couldn't find anything. What's the different between 04 diff and the earlier model diff? Is the pumpkin different? Final drive ratio?

[slow92]

From what I understand the pre 1996 diff will fit in your car as well. The housing is the same but the ratio is different. The pre-96 had a ratio of 3.54 and the post-96 had a ratio of 3.69. I don't know anything about the newer q45 diffs.

[2muchboost]

90-96: Need larger wheel hubs like the Z32TT, Z32 TT driver side axle, Q45 driver side axle. This has a 3.54 ratio.

97-01: Uses stock stock S14 vlsd equipped axles or J30. 3.69 ratio.

[ixfxi]

Do I have to get 96-01 diff to fit in the s14?

Nah, you dont have to.

Just leave it stock and your car will still work.

[laurentj23]

Thanks guys.. I'm familiar with info. Still needs to know whet here 04 year diff will fit?

[2muchboost]

Not sure but what ratio are you trying to achieve?

[laurentj23]

3.69/ 3.54 . I just need the ring and pinion. I can pick it up on the 26th or 27th. Ill be down there for vacation

[5280VertDET]

Swap the guts, your ring you want and call it a day.

[laurentj23]

Is 04 diff guts and rings interchnagable though? I know the 91-01 does.

[5280VertDET]

Found this, I think the 04 use the R230, so I am incorrect.
They do not fit.

The Q45 uses an R230, identical to the 300ZX TURBO. It does not bolt into the S13/S14 subframe...

IIRC, the M30 uses a weird rear suspension, some trailing arm setup...and has a diff similar to an older Z31 300ZX...the internals may be R200, but the case (or the whole diff) is not a bolt in deal.

If you read this on the 240sx.org page about diffs...that page sucks, lots of errors.

I have fixed the errors, and posted all the other good info for you:

http://www.ka24development.com/vlsd.html

Hope that helps... - Brian

[laurentj23]

Found this, I think the 04 use the R230, so I am incorrect.


Thats what i needed to know. Thanks.