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Author Topic: Rear End/differential Variations  (Read 35795 times)

Offline Denrée

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Re: Rear End/differential Variations
« Reply #40 on: 10:19:54 AM / 22-Jul-11 »
Hello

S12 europe CA18ET R200 = 3.7  not 4.1....

Couronne: 37 dents
Pignon: 10 dents

37/10= 3.7 ^^

Offline tommy

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Re: Rear End/differential Variations
« Reply #41 on: 10:29:18 AM / 22-Jul-11 »
^interesting... are you sure it's the stock gearing? Maybe it was swapped by one of the previous owner of the car to get better gas mileage...
Corolla TE31 1977 (traded)
Corolla KE20 1974 (Project)

Offline Denrée

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Re: Rear End/differential Variations
« Reply #42 on: 10:32:33 AM / 22-Jul-11 »
Yes, sure ! S12 100% stock !

Post Merge: 10:35:56 AM / 22-Jul-11
My Z31 diff is 3.7 also
« Last Edit: 10:35:56 AM / 22-Jul-11 by Denrée »

Offline tommy

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Re: Rear End/differential Variations
« Reply #43 on: 11:00:24 AM / 22-Jul-11 »
yes, majority of the z31 diff are 3.7, some 3.54, but for the s12, at least in north america, to my knowledge, we never got it, the ca20e and ca18et were both 4.1 and the vg30e were 3.9
Corolla TE31 1977 (traded)
Corolla KE20 1974 (Project)

Offline Denrée

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Re: Rear End/differential Variations
« Reply #44 on: 12:28:37 PM / 22-Jul-11 »
OK but in europe, S12 CA18ET, 3.7   ;)

Offline blindboxx2334

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Re: Rear End/differential Variations
« Reply #45 on: 04:17:07 PM / 22-Aug-11 »
hello, first post after reading through this thread. and im a little lost about what can go into a r200 s12 diff.... so i need your help.

i am looking to do a IRS rear end swap on my ae86, ive seen a couple of s13 rear ends done before, but i dont want to go that route (although i may be..), because it extends the width of the rear end 30mm on each side, and im not down with that, nor do i really wanna rock a wide body... so i eventually figured it out that s12's arent as wide as s13's, so im looking into putting one in my 86.. so my question is:


i know these 84-88 s12's have the r200 diff, and weir performance makes a spool diff for the s13, i know both s12's and s13's are r200 diffs, just not sure what diff housing, stub ears, and half shafts i have to use to make this spool a bolt in affair... any help? thx in advance

heres the link to the spool:
http://www.weirperformance.com/spoolslimitedslipunits.html


Widths of vehicles:
s12 (84-86)-     65.4"     
s12 (87-88)-     65.7"     
s13-                66.5"
ae86-              64"
NA (miata)-      65.9"
NB (miata)-      66"


edit:
i found a stock picture of an s12 rear end on google images, now i cant find it... can someone send me a pic of it? thanks.

edit #2:
im a dum dum, i forgot about the miata rear end.. i didnt even think about it as a possibility, worst part about this is, i have a miata. -__-
« Last Edit: 04:42:04 PM / 22-Aug-11 by blindboxx2334 »

Offline tommy

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Re: Rear End/differential Variations
« Reply #46 on: 06:39:26 PM / 22-Aug-11 »
First of all, why in the heck do you want to do that to an AE86?

Second, why the hell did you choose the s12 rear end... you should be running away from it, it carries a virus called negative camber which cause the hellaflush disease...

Seriously, stick with your SRA buddy... it might not be the most advance suspension design but it is light, tough and very predictable (toe and camber are always fixed whatever the position of the suspension).  The S12 trailing arm design changes camber as it moves up and down, so you end up with way too much negative camber if you drop the thing...

Your stock T rear end (6.7") is good for 150 to 180 ft/lbs of torque before you need to worry... If you want to upgrade above that, weir also makes a spool and big ass 31 spline axles that are bolt on in your current housing and can withstand up to 350ft/lbs.  If you don't want to go with a spool and keep a diff, you have access to the F rear end out of the 1st gen supra with up to 300ft/lbs of torque capabilities... if you'd like an LSD with that, swap the 1st gen diff with a 2nd gen supra P-type (IRS) one, as simple as that...

above that, you can always swap in a ford 9" for the ultimate indestructible rear end... but that's an other story
Corolla TE31 1977 (traded)
Corolla KE20 1974 (Project)

Offline Wolf Dilworth

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Re: Rear End/differential Variations
« Reply #47 on: 07:02:17 PM / 22-Aug-11 »
It is not that big a deal to add adjust-ability to the S-12 rear end, if you are going to fab up a totally different car. Puts an end to the Hellaflush disease.  The proper height can be built in.

Any IRS design is a huge improvement over SRA any day.  SRA only good for 1/4 mile.  S-13 design is better (more adjustable) than S-12, though.
« Last Edit: 10:10:31 PM / 22-Aug-11 by Wolf Dilworth »

Offline Drfsta

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Re: Rear End/differential Variations
« Reply #48 on: 02:51:30 AM / 20-Feb-13 »
Hello.

Thanks a lot for all of the information. I understand the option using S13/14 components - thats GREAT!

Can anyone offer infomation about possibly using a factory longnose R200 LSD from an R31 Skyline.

I have access to the diff casing and centre at no cost, I need to know whether I will have output/input shaft issues and if so, what those differences are and how to rectify or fabricate to suit.

Thanks a lot. (car is an 84 IRS CA18ET Notch)

 
1984 S12  :love:

Offline pakii-afa

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Re: Rear End/differential Variations
« Reply #49 on: 01:04:36 AM / 23-Feb-13 »
dumb question probably, but lets say i use a z31 3.7, and find an aftermarket r200 lsd, does my final still stay or is that dependent on what i buy for aftermarket?

Offline vegasS12

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Re: Rear End/differential Variations
« Reply #50 on: 11:07:40 AM / 23-Feb-13 »
dumb question probably, but lets say i use a z31 3.7, and find an aftermarket r200 lsd, does my final still stay or is that dependent on what i buy for aftermarket?
the final drive gears (gear and pinion)stay in the diff.

Offline pakii-afa

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Re: Rear End/differential Variations
« Reply #51 on: 02:27:26 AM / 24-Feb-13 »
not very intellectual with these things, so i still dont know if that is a yes or a no :S

Offline seishuku

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Re: Rear End/differential Variations
« Reply #52 on: 03:12:46 AM / 24-Feb-13 »
You transfer the gears to the new LSD, so yes, the final drive ratio stays the same.
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Offline pakii-afa

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Re: Rear End/differential Variations
« Reply #53 on: 08:02:52 PM / 25-Feb-13 »
i did some research too, going to look for a 84 - 86 z31-t rear end, 3.54 will be epic for me :) lol

thanks too

Offline vegasS12

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Re: Rear End/differential Variations
« Reply #54 on: 12:33:15 PM / 26-Feb-13 »
i did some research too, going to look for a 84 - 86 z31-t rear end, 3.54 will be epic for me :) lol

thanks too

There are a ton of those diffs out here.

Offline pakii-afa

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Re: Rear End/differential Variations
« Reply #55 on: 08:59:23 PM / 26-Feb-13 »
so ive heard, soon i will get one, and an lsd for it. did they have 10 mm bolts or 12? couldnt really get an answer so what i assume is it came with both.

Offline TheShane

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Re: Rear End/differential Variations
« Reply #56 on: 05:37:49 AM / 08-Nov-13 »
So I've read the thread and from what I read an LSD made for an OPEN diff S13 WILL fit WITHOUT and modification to the axles or anything else. Right?

So this HLSD unit from OBX will fit? http://www.ebay.com/itm/OBX-LSD-Limited-Slip-Differential-91-98-Nissan-240SX-Silvia-200SX-Z31-/121203736361?pt=Motors_Car_Truck_Parts_Accessories&hash=item1c384e3f29&vxp=mtr

Any help will be appreciated, I'd like to order soon!

Thanks!
1987 200SX SE V6

1978 VW Bus

Offline TheShane

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Re: Rear End/differential Variations
« Reply #57 on: 08:40:28 PM / 18-Mar-14 »
So I've read the thread and from what I read an LSD made for an OPEN diff S13 WILL fit WITHOUT and modification to the axles or anything else. Right?

So this HLSD unit from OBX will fit? http://www.ebay.com/itm/OBX-LSD-Limited-Slip-Differential-91-98-Nissan-240SX-Silvia-200SX-Z31-/121203736361?pt=Motors_Car_Truck_Parts_Accessories&hash=item1c384e3f29&vxp=mtr

Any help will be appreciated, I'd like to order soon!

Thanks!

UPDATE:
I bought one and it WILL fit. You'll need to get circlips for the diff and new bearings of course. Otherwise you're all set.

If you go the OBX route like I did... Rebuild it first!!! They come with extra shitty belleville washers that are installed wrong from the factory and they break and leave bits of metal in your new diff. See:  http://www.marcuccimotorsports.com/jobs/H22%20trans/OBX%20LSD%20Washer%20Replacement.pdf
1987 200SX SE V6

1978 VW Bus

Offline johnnydread

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Re: Rear End/differential Variations
« Reply #58 on: 05:16:12 PM / 25-Mar-14 »
So you do not need different input shafts as stated earlier in this thread?

Offline irax

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Re: Rear End/differential Variations
« Reply #59 on: 02:06:03 PM / 26-Mar-14 »
So you do not need different input shafts as stated earlier in this thread?

You only need different input shafts on VLSD diffs for VLSD pumpkins. You can buy diffs for open diff. Otherwise people with open diffs would have to buy axels with their diff and that would suck.