2 way LSD and welded diff or s15 LSD?

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lilpiton
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Hey whats up, i got a 92 240sx with a Sr20 in there and no LSD. I bought the s15 LSD a whille back and never installed it. I'v been told that it wont hold nice. Is that true? Now about the welded diff, I dont really think im gonna do but now, what is the differenc of how all 3 of them will work.Iv heard the welded diff is fun but gets annoying.


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1.8turboterror
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Welded diff will not be streetable . I have a kazz 2 way diff in my car it is very good locks up very easily but can also b annoying . Im sure the s15 diff you have which is a helical diff will be fine for what you will be doing you should put it in and rock it for a while at least cuz you already have it. you will need the s15 half shafts and axles if you dnt have them already as they are different from nd s13 open diff ones. hope that helps you.

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lilpiton
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this is what i have.so the 2 way one is like if you would of weld it?its will squick one tire on a slow turn? and sucks in wet?

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the converted
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I'm pretty sure that that is more of a 1.5 way diff. It is very streetable because it was a factory installed part. Put it in and see how you like it, I think you'll be very happy with it.

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lilpiton
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the converted wrote: Put it in and see how you like it, I think you'll be very happy with it.
ok so if i do put it in will it have to be done by a shop or will i be able to put it in there myself?

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ashoe
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I've got one of these in my car and i will never look at a 2 way again. It made my car so much nicer to drive and locks up when i want it to. You may want to get the side oil seals for your diff. They don't need to be replaced all the time but may leak if you don't, and also a gasket for the diff. You can change it yourself. The process is in one of the write-ups, but if you aren't familiar with checking/setting gear lash it may be better to have a shop do it. It's about a 3 hour project if you chose to do it yourself.

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1.8turboterror
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Read this page it goes into depth on all the different types of Lsd's on the market today very good article http://www.kaazusa.com/intro2.html

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SullivanRacing06
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i just blew my vlsd on dyno todaym threw in a welded diff, sucks balls! ran from these things called the fuzz in my neighborhood and my pass front side had a nice lil run in with a curb, nothing to bad but holy $hit, thought i messed up allot more then just a 200$ rim lol, go witha 1.5 or 2 way kaaz, im waiting for mine to come in along with my nismo power brace and tention arms

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1.8turboterror
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I would say go two it may chirp a lil more going around turns at slow speeds but I promise you will be happier with it . Its what most of the pro drifters use. and I use it for drag racing as well. The only down fall too the kazz lsd's is that they use clutch packs and you have to change the diff fluid about every 3000 miles along with your oil thats something to think about.

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SullivanRacing06 wrote:i just blew my vlsd on dyno todaym threw in a welded diff, sucks balls! ran from these things called the fuzz in my neighborhood and my pass front side had a nice lil run in with a curb, nothing to bad but holy $hit, thought i messed up allot more then just a 200$ rim lol, go witha 1.5 or 2 way kaaz, im waiting for mine to come in along with my nismo power brace and tention arms
FYI, it's the driver, not the diff.

open and vlsd both bleed a lot of power, so it can hide poor driving.

A 2way and welded don't have any remorse for poor driver input.

They both will make noise as you turn. You can mitigate that noise by running better tires and friction modifier for the two way.

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lilpiton
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ashoe wrote:You can change it yourself. The process is in one of the write-ups, but if you aren't familiar with checking/setting gear lash it may be better to have a shop do it. It's about a 3 hour project if you chose to do it yourself.
thanks guys for all the help.Okay so i am looking forward to changing it my self, i did a rebuild on my motor and never did any other motors and it runs fine, so i think i can accomplish this one. just not to sure what you are talking about when saying checking/setting gear lash. i will have a buddy or two with me to check things up, but they never did this either.

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lilpiton wrote:
thanks guys for all the help.Okay so i am looking forward to changing it my self, i did a rebuild on my motor and never did any other motors and it runs fine, so i think i can accomplish this one. just not to sure what you are talking about when saying checking/setting gear lash. i will have a buddy or two with me to check things up, but they never did this either.
They are talking about the amount of play between your ring gear (big one) and your pinion gear (small one). It's called backlash.

If there is too much play, you run the risk of stripping out and prematurely wearing your R&P out.

If there isn't enough, you run the risk of putting excess stress on your drivetran and prematurely wearing out your R&P.

You can set it using dye and feeler gauges.

Best bet is to take it to a shop and have them do it.

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lilpiton
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aha. so that makes me be at another thing to think about. Is it easy to f**k it up lol? i really want an LSD and i have the s15 one but dont have the money to take it to the shop to get it installed : (...

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ashoe
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A lot of people just use the shims that were in the case with their original diff and turn out fine. It is one of those things that should be done right but... will probably be ok if you don't. I put mine in without knowing anything about checking backlash, ran it for about 6 months, then took it apart and did it right. Everything looked fine and there wasn't any wear to the r&p. This however is no gurantee that yours will be the same. If you do put it in, i would discontinue use if you get any strange noises/ vibrations from the diff. One downside of doing yourself is the shim kit is not cheap. Could probably get it installed for less. A shop probably won't charge much if you take the diff off your car and bring it to them. Just something to think about

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lilpiton
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ashoe wrote:A shop probably won't charge much if you take the diff off your car and bring it to them. Just something to think about
yea thats whet i was gonna do, take out the pumpkin and give it to em. Thay told me $470 to get it installed!

Oh and if i do install it I will need the s15 axels too?i got the half shafts already...

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ashoe
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You don't need the axles. it will bolt right up to the ones on there. 470 is totally outragous. once the pumpkin is out of the car the job takes like an hour or less. Find another shop. No need for performance shops for this job. Any competent transmisson shop can do this.

!Zar!
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ashoe wrote:A lot of people just use the shims that were in the case with their original diff and turn out fine. It is one of those things that should be done right but... will probably be ok if you don't

Could probably get it installed for less. A shop probably won't charge much if you take the diff off your car and bring it to them. Just something to think about
It is true, you can go by the, "I hope" method, but it's still a gamble.I've known people who have destroyed differentials because of that.

But he should take the diff out and then take it to them. It isn't hard.
ashoe wrote:You don't need the axles. it will bolt right up to the ones on there. 470 is totally outragous. once the pumpkin is out of the car the job takes like an hour or less. Find another shop. No need for performance shops for this job. Any competent transmisson shop can do this.
Doesn't sound too bad. If the shop charges per hour, lets say it takes them an hour to take the diff out, an hour to work on it and, an hour to set backlash and what not.

At a rate of $100hr That's $300 right there.

Then you have, "recession bs pricing". Which means it takes them an hour and a half per install/removal.

Then some how they charge him $70 for some OEM shims or some bs.

So it's right on.

haha.

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lilpiton
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ashoe wrote: Find another shop. No need for performance shops for this job. Any competent transmisson shop can do this.
Thats what im gonna have to do then.thaks alot guys...


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