will any rear diff

[norcalslider]

fit my s13,i wanna get rid of my welded diff and switch to an open diff if i can drop in a s14 diff i can pick one up right now for $60 bucks

[smoked240]

An s14 should drop right in but you will just need the axles to match the output shafts. I have an s14 diff and axles in my s13.

What do you want for your welded diff? I will take it off your hands if you no longer want.

[idahotuner]

i have an open diff if you want it.

[soreballz]

An s14 should drop right in but you will just need the axles to match the output shafts. I have an s14 diff and axles in my s13.

Dont listen to this guy. His head is up his ass.

To use an S14 pumpkin, you have to reuse your S13 diff cover, and you need the S14's diff bushings.

[Hashiriya415]

Dont listen to this guy. His head is up his ass.

To use an S14 pumpkin, you have to reuse your S13 diff cover, and you need the S14's diff bushings.

Don't listen to this guy either. LOL
You have to use s13 diff cover. But in addition, you must use solid front bushings, if you leave the rubber bushings in the front part of the s14's diff, your rear bolts will start breaking off.
I have brand new stance solid bushings for sale PM me if you want them.

[norcalslider]

ok i was just wondering what i need to do or i can find an s13 open diff and be good

[soreballz]

you must use solid front bushings. if you leave the rubber bushings in the front part of the s14's diff, your rear bolts will start breaking off.

What? I have never heard of such a thing. Explain this.

[smoked240]

Dont listen to this guy. His head is up his ass.

To use an S14 pumpkin, you have to reuse your S13 diff cover, and you need the S14's diff bushings.


Wrong. you don't HAVE to use the s13 cover. you can, but don't have to. and no you don't need the s14 bushings. just another thing you can have.

I have had the original bushing's in the s14 diff for 2 years and there still good. I have also had the diff out about 8 times in the past year and checked them each time. So again you don't need the solid bushings.

To OP, just make sure your axles bolt up to it.

[Hashiriya415]

If the front is loose because you are using rubber bushings and you have rear mounted solid, the diff can vibrate more freely and cause more stress in rear bolts causing them to break over period of time.

[az_240]

Look at your axles and count the number of bolts you have connecting the diff. There are 5 bolt (VLSD) and 6 bolt (open) diffs/axles. More than likely they will both be 6 bolts so you should be good.

Using the s13 diff cover on the s13 subframe is recommended. You will need longer s14 diff bolts if they are not included. You can use the stock s14 rubber bushings but they are pretty sloppy and can crack the subframe during hard driving... Poly diff bushings are only like $20 or you can get aluminum for a little more but this will cause more noise.

[smoked240]

If the front is loose because you are using rubber bushings and you have rear mounted solid, the diff can vibrate more freely and cause more stress in rear bolts causing them to break over period of time.


Makes sense but it must take loose as shit bolts or a long time. I have been going on 2 years now with mine. But I did make sure it was tight. Switching to solid bushings might not be a bad idea since I plan to add solid subframe bushings.. What do you want for the ones you have?

Look at your axles and count the number of bolts you have connecting the diff. There are 5 bolt (VLSD) and 6 bolt (open) diffs/axles. More than likely they will both be 6 bolts so you should be good.

Using the s13 diff cover on the s13 subframe is recommended. You will need longer s14 diff bolts if they are not included. You can use the stock s14 rubber bushings but they are pretty sloppy and can crack the subframe during hard driving... Poly diff bushings are only like $20 or you can get aluminum for a little more but this will cause more noise.

That about sums it up.

[norcalslider]

that makes sense since there all 6 bolt the way your saying it,just get longer bolts if there not included.

[mxexux]

Look at your axles and count the number of bolts you have connecting the diff. There are 5 bolt (VLSD) and 6 bolt (open) diffs/axles. More than likely they will both be 6 bolts so you should be good.



5-bolt and 6-bolt axle stubs have nothing to do with if the diff is open or Limited Slip... 5 bolt axle stubs were used on the R200 diff before '95 and the 6-bolt ones were used from '95 on. You can get a '94 J30 VLSD with 5-bolt axle stubs.

[180wanabe1]

5-bolt and 6-bolt axle stubs have nothing to do with if the diff is open or Limited Slip... 5 bolt axle stubs were used on the R200 diff before '95 and the 6-bolt ones were used from '95 on. You can get a '94 J30 VLSD with 5-bolt axle stubs.

WRONG. by ur logic my 89 240 with an open diff and 6 bolts doesn't exist...but wait it does. anyways if you want to just drop the s14 diff into ur s13 pumpkin, theres no problems but you need to check gear backlash on the ring and pinion and you can adjust that with shims in between the outer bearing races and the housing.

[mxexux]

^^Ok, My logic with '95 and on logic could be wrong with the S-chassis but it is true for the infiniti J30 at least. Besides how sure are you that your '89 with a 6 bolt wasn't swapped in by somebody?

The main point is that 5-bolt and 6-bolt stubs have no bearing on whether the diff will be open or Limited slip.

[soreballz]

There sure is lots of speculation and misinformation in this thread.

[articdragon192]

There sure is lots of speculation and misinformation in this thread.

The blind leading the blind and telling those with sight they can't see, lol.

[soreballz]

^For real. Lemme break it down...


Wrong. you don't HAVE to use the s13 cover. you can, but don't have to. and no you don't need the s14 bushings. just another thing you can have.

S13 subframe takes four bolts, S14 cover has two bolts. Look at the difference in how they mount:
http://i167.photobucket.com/albums/u159/zilvia_album/P1060281.jpg
Do you see an issue with that? I sure do.

And yes, you DO need the S14 diff bushings. It doesn't matter if they're stock, solid, or poly, you NEED the bushings. Otherwise all you have is a little bolt in a big hole with a ton of space around it for it to flop around.
I suppose you could weld the washer for the bolts directly to the ears, but that's just silly.

If the front is loose because you are using rubber bushings and you have rear mounted solid, the diff can vibrate more freely and cause more stress in rear bolts causing them to break over period of time.
Makes sense, but you still don't HAVE to use poly/solid bushings. Good idea, sure, mandatory, no.

Look at your axles and count the number of bolts you have connecting the diff. There are 5 bolt (VLSD) and 6 bolt (open) diffs/axles. More than likely they will both be 6 bolts so you should be good.

There are 6 bolt VLSDs, too.

5 bolt axle stubs were used on the R200 diff before '95 and the 6-bolt ones were used from '95 on.
Not true of 240s.

Besides how sure are you that your '89 with a 6 bolt wasn't swapped in by somebody?

All US 240SXs have 6 bolt (3x2 pattern) diffs, regardless of whether it's equipped with an open diff or a VLSD.

5-bolt diffs come from JDM S-chassis cars and J30s.

[articdragon192]

My name is Edgar Ferman and I approve his message.

[JSimpson]

Post above is correct. Far above posters are IDIOTS. ALL 240s have 6 bolt axles stock, the J30 VLSD came in 5 and 6, but that wont work for you anyway because the snout is longer on the diff (ALL J30s had ABS). The 5 bolt axles were either JDM or some of the J30.

ALSO you CANNOT put an s14 diff in an s13 without the according rear cover. Whoever said the s13 diff cover is "recommended" is an idiot. They simply will not work. 4 bolt vs 2 bolt... the J30 diff rear cover will work in an s14 and NOT an s13.

ALL you have to do it pull the diff out itself from the housing. Keep your s13 housing and just replace the welded diff with an open... all you do it knock the output shafts out, pull off the 2 caps, and take the ring gear loose of the diff, and put it all back together the same way you took it apart with the OPEN diff... its a 10 minute job hahaha

You should not need to mess with the backlash at all as ALL R200 diffs are identical and the diff bearings are identical... Ive had 3 different diffs in my s14 housing and Ive never reshimmed or adjusted anything haha. Ive had an open, z32 vlsd, j30 vlsd all in the same housing and they all worked perfect haha

[az_240]

I was simply trying to get the guy to make sure he had the right axles.

Everyone knows you can swap the guts.

Most cases 6 bolt = open and 5 bolt = VLSD.