300zx TT r230 Differential in an s14 Chasis?

[Fwd2Rwd]

Hey everyone on here i've done alot of reading a research on this topic, so before i get flamed at i just wanted to lay that point down.

Heres my situation:

1995 240sx Open DIff. I want to install a VLSD on it.

I recently purchased a 300zx TT DIFFERENTIAL R230v with one axel for next to nothing and i've been reading that this DIFF isn't the ideal diff for the 240sx because of its SIZE and Final gear 3.69 as compared to the r200.

I've read numerous thread about people saying that it can't be done because of the housing on the DIFF and i've also read that it does work with some housing swapping. ie. Changing cases. And i know that the 300zx Diff has the 6 bolt ends and some modify is going to be needed.

OK so heres my question how can i make this work ?
Can i reuse my stock 3x2 axels and output shafts so i can retain my stock half shafts by taking te 3x2 output shafts from my stock open ended diff?
and is it true that the housing on the 300zx is too large ? and can it be swapped out with my stock diff to make it work/?


I know this is alot of questions, but if anyone can just tell me if theres a way to make this 300zx TT VLSD Diff will work without too much trouble. Or should i just sell it and find a r200

thanks in advanced!

[johngriff]

Im pretty sure it is an r200. Take a picture, lets see what exactly you have.

[Fwd2Rwd]

Im almost certain that i have a 300zx twin turbo r230v Differential. I only know this because the guy i got it from said it was from blown 300zx TT and the output shafts are 6 bolts.

can i use the stock output shafts on my stock OPEN DIff and mate it with my 300zx TT diff. which has 6 bolts?

[GSXRJJordan]

typically you can swap output shafts, but I'm not sure with the R230. I didn't think the R230 bolted up to the S13 or S14 subframes though, cause the cases arent the same... anyone have info?

[OptionZero]

sell it and get an r200

vlsd's are too cheap and crappy to go through all that trouble to make one fit

if you got one for free, sell it and consider the take as profit to be spent on a diff that fits

[Fwd2Rwd]

sell it and get an r200

vlsd's are too cheap and crappy to go through all that trouble to make one fit

if you got one for free, sell it and consider the take as profit to be spent on a diff that fits


Ok it looks like im leaning more towards selling this thing... but if anyone has info on making it work im still very interested.

and another question are all r200 Differentials 4.068 final drives? or are some of them on the Q45 different? like for instance Q45. are they 3.54:1

[Nikeboy355]

Q45 uses the same diff as the 300ZX turbo... The J30 is what you are talking about...

And from the factory, most of the R200 VLSD diffs came with the 4.08 final drives IIRC...

[1Via!]

You can find 4.3 geared diffs out of CA powered cars, iirc.

[Fwd2Rwd]

I have a person that states that he has a Q45 r200 Vlsd 3.54 Differential.

is there any truth to this? and how can i find out if it really is a r200 and if it is how can i tell what final drive it is once it is a r200

[revd34]

how can you tell the difference of a 300zx TT diff and 300zx n/a just by looking at it? i'm not sure if the one i have is n/a or turbo?

[Sir]

pop the cover and measure the ring?
200mm = R200
230mm = R230

done.

[projectRDM]

The R230 case is larger as well, side by side you can easily see the difference.

[irax]

you can bolt a r230 z32 tt diff to a s14, but i dont think anything else would be interchangeable.

[Fwd2Rwd]

how can it work irax? Like i said before some people believe it will fit and some dont. please clarify it thanks

[johngriff]

Dude, get some pictures.

[irax]

well, i have an s13 open diff that has been rebuilt then welded. unfortunatly s13 diffs have 4 bolts and s14's like z32 use 2 bolt mounts. I have bolted a Z32TT diff cover on a s13 diff and mounted it to my s14. So really in theory you can MOUNT a z32TT diff. But to use it you deffinatly will need custom axles or you maybe able to use R200 input flanges for the diff, or inner CV joints from a car that uses the R230 but I cant confirm any of that.

[drift freaq]

ok lets start the myth busting. No you cannot use a 300zx TT aka R230v diff in our cars. It is physically larger. It has a constant velocity style input to driveshaft connection. The half shafts and output shafts are larger, the ring and pinion is larger. Just get the whole concept out of your head unless your Monster Garage!

OK that out of the way. Now lets move on to the Q45 diff. It has the same kind of input/driveshaft connection. It also has larger output shafts. In a word its not worth the trouble. Yes its 3.54:1 geared because its sitting behind a fricken V8 aka torque out the ass.
You don't want a 3:54 gear in your car unless your putting out upwards of 350 ftlbs of torque and even then you would probably be unhappy with your off the line acceleration.

300zx TT's came with 3:69 aka 3:70:1 ratios because they were turboed and for the American market. We have and do more freeway driving. In a turbo setup a higher gear aka numerically lower gear is advantageous for staying in boost. Though if the engine rev's you could still use a lower gear aka numerically higher like a 3:90 or 4.08 or 4:11 and rip off the line but stay in boost. The skyline's were setup this way. Most people would have expected them to come with a 3:70 or 3:90 though Nissan put 4:08's in the GTST's and 4:11's in the GTRs. That is because RB's do rev nicely.

J30's came with 3:90's and that is a good choice if your looking to go a little more freeway aka top end on your gears.

CA18det powered 180sx's came with 4:36:1 gears because they lacked torque. Some drifters like those gear for the shear in the rev band immediatly that happens.

Now after all this what the hell are you trying to do with your? How much power do you have? Do you know what your trying to achieve?

[irax]

thanks for the clear up dave

[Jordan]

Let me add a bit of info...
You cant use a R230 diff without modifying the subframe. It has been done, but I cant remember where I saw it. IMO its not worth it.

The stock ratio is 4.083. The NA Z32 uses the same ratio. The J30 ratio is 3.916. Q45 is 3.54. Z32TT is 3.69...

There is lotsa debate about using the Q45 diff. I believe Z32 NA diff's have been swap into Q's (G50 or Y33, I cant remember). The input flange had to be swapped. Ive also read claims thta the Q R230 diff has been swapped in an S chassis. There were no pics to back it up, but it seems like it would be as much work as using a Z32TT R230 diff.

[projectRDM]

It's not even a question, the R230 case is simply too big to bolt in, the subframe HAS to be modified. Anyone using a Z32 diff is using an NA R200. Simple.

[johngriff]

Exactly, i keep asking for pics because the OP seems so unsure of what he even has.

[revd34]

here are my pictures. so is it turbo or non-turbo
http://i96.photobucket.com/albums/l174/loser34_01/forsale1008a.jpg
http://i96.photobucket.com/albums/l174/loser34_01/forsale1009a.jpg
http://i96.photobucket.com/albums/l174/loser34_01/forsale1007a.jpg

[Bernie (NoVA)]

You can't use a TT diff. They don't bolt up and the gearing is a bad match.

You should be using a Z32 Nonturbo R200 diff. I have one for sale @ $100 local or plus postage

[Bernie (NoVA)]

BTW your picture is not of a Z32 TT diff.

Here is one that we pulled off of a '90 TT:
http://www.yugobernie.com/images/Cars/2004.05.08/DSC01101.JPG
http://www.yugobernie.com/images/Cars/2004.05.08/DSC01103.JPG
http://www.yugobernie.com/images/Cars/2004.05.08/DSC01104.JPG
http://www.yugobernie.com/images/Cars/2004.05.08/DSC01105.JPG
http://www.yugobernie.com/images/Cars/2004.05.08/DSC01106.JPG
http://www.yugobernie.com/images/Cars/2004.05.08/DSC01107.JPG

[johngriff]

Yeah, that is a TT diff, sell it on the z32 forums, and pick up a r200 style LSD.

[drift freaq]

Yeah, that is a TT diff, sell it on the z32 forums, and pick up a r200 style LSD.
nope that looks like a NA diff. It appears to have stock NA style input shaft.. If the OP could get us a better snout shot it would easier to tell. Like what the hell is with the leaves lol

[Sir]

if you look at the diff, yours looks like a 5 bolt axles (from what I can tell)
TT uses 6bolts.

Im guessing you got R200V
Go get some axles, and drop it in.

[revd34]

here are some better angles. no leaves just a trash bag this time. so i just need to put the diff cover off my car onto this diff right and it should bolt up?
http://i96.photobucket.com/albums/l174/loser34_01/forsalepart3001a-1.jpg
http://i96.photobucket.com/albums/l174/loser34_01/forsalepart3002a-1.jpg

[Bernie (NoVA)]

My understanding is that on a S13 you'll want to solid mount the front of the diff instead of the stock rubber.

[johngriff]

ahhh, i just looked at the output shafts from the top down and thought they were 6x1. The NA Z diffs i have seen have been 3x2 (like the 240sx). 5x1 is cool b/c it works n/p with the J30/180sx Axles.

But, the ABS sensor is not on the input shaft(j30), its on the output shafts (Z32). So does this mean the spacing on standard 5 bolt axles will be wrong?

dave??

[projectRDM]

Z32s use a 4channel ABS setup, placing the wheel skid sensors on the output shafts. This adds a little length on them so regular J30 axles will not fit without seriously compressing them. The best option for installing a Z32 NA diff is to swap the output shafts for J30/S14/S13 VLSD shafts and use the existing axles.

[drift freaq]

ahhh, i just looked at the output shafts from the top down and thought they were 6x1. The NA Z diffs i have seen have been 3x2 (like the 240sx). 5x1 is cool b/c it works n/p with the J30/180sx Axles.

But, the ABS sensor is not on the input shaft(j30), its on the output shafts (Z32). So does this mean the spacing on standard 5 bolt axles will be wrong?

dave??
No, actually Russ nailed it. Though I have seen people put them in with pre 95 J30 axles but I have been on hand to see how much they compressed.

[projectRDM]

^ As have I. In an S14 with a slightly wider subframe they'll seemingly fit better, but the axle is still too compressed and will eventually bind as the tension puts extreme pressure on the CV joints.