240sx Lsd

[GrimL3]

Im going to be starting my project car pretty soon, and im curious to know how hard it is to upgrade the diff to a LSD and what the price range is

the car will be 1991 S13

`thanks

[R.W.240]

800-1100 for any LSD worth having.

or you could get the No Slip Differential for free if you have a friend with a welder.

Its simple enough... your supposed to shim the carrier so it fits perfect but most people dont and it works problem free.

[Hit_N_Run-player]

why dont all people just weld up the differential then? I have many types of welders at work, but i wouldnt know what to do? You got any links or could you explain?

[R.W.240]

Originally Posted by Hit_N_Run-player

why dont all people just weld up the differential then? I have many types of welders at work, but i wouldnt know what to do? You got any links or could you explain?

A) Its pretty hardcore for street use. It never unlocks like Clutch types do so if you get into trouble you can't just push in the clutch. It will cause the inside tire to skip when going around corners.

B) It will make the car understeer entering corners and generally feel really weird compared to LSDs. This doesnt matter on drift cars becuase if your entering far enough back you wont have entry understeer.

C) People that dont know what they're talking about say you'll break axles, which is false. I know at least 10 people with welded diff 240s that have never had problems. The only way to break axles with a welded diff is HUGE tire and Horsepower, which will break things reguardless. You can however snap the welds, which is usually due to crappy welding. for about 200$ bucks you can get the "weld locked" diff from some guy in cali which is bullet proof... some guy apparently ran it without any gear oil and it was still going strong.


I'll be getting a welded diff after I break in my new motor and get most of the kinks sorted out.

[Hit_N_Run-player]

Originally Posted by R.W.240

some guy apparently ran it without any gear oil and it was still going strong.

damn, that is hardcore...

[orestes]

hahahah LOL NO GEAR OIL WOW. i would have bet money you couldnt do that.

[GrimL3]

well, my car isnt going to be doing any drifting or drag stripping. purely a street car, i dont need something amazing but the thought of not having one isnt boding well. any thing cheaper then 800 or the no slip welded diff?

[R.W.240]

Theres the VLSD... and street use is pretty much all its good for. One of my friends used a VLSD for drifting, he ended up replaceing it three times in one year. Some people have shimmed them for more locking power but I don't know how.

You could get a VLSD for free to 400$

[SHIFT_KA24DE]

well if there's no drifting or dragging... im sure a lsd isn't a top priority...

[TRUBO_89]

quaife sounds good for u then
its not quite an "lsd" but it should be good for the streets and any kinda performance stuff
a little pricy though ($1500)

[R.W.240]

Originally Posted by SR20DETpower

yes it will work, but will make more noise in some situations and will not last as long.... and I don't know about you but Ring and Pinion Gears aren't something I would like to consider regular maintenance.
$$$$$$$$$$$$$$$$$$$$$$
if it was simple enough everyone would know how to do it and would always do it properly the first time. It can be very frustrating sometimes and you have to break down the diff every change u make and re assemble it all back together to check your backlash again..

Like I said, your supposed to shim it. however, many people do not and many have completely trouble free operation.

Originally Posted by SR20DETpower

will go through tires a lot faster guranteed. Sometimes your car will buck and skip around, especially in parking lots and everyone will look at your crazy ghetto rig gyrating around.


Also problems with the Nissan R200 rear differential and a welded differential is that it can take out the pinion shaft. It will loosen it leading to numerous problems... leakage, pinion seal, pinion bearing.. if it gets bad enough it could lead to busted pinion/ring gear tooths, pinion shaft, or the actual case could become chewed up and useless under extreme conditions.


By far the biggest failure with welded diffs in general, is that due from the stress you can crack the welds on it, when this has happened to some people it has locked the diff up. Just imagine that at 120mph, imagine it at 200mph and you will realize why no professional race teams use welded differentials. It also lacks highly in moderate to tight technical corners and autocrossing. Proper weld technique and placement is required for a good welded differential so defintely check into it if you are mind set on doing this mod. Some off-roaders swear by them, but those hardcore rigs do not get hardly any street mileage and when run hard the tires aren't gripping into asphalt and the tire gives away traction a lot easier...

The only Welded diff related problem I've actually heard of from 240SX owners is the welds breaking, probably because of shitty welds. People will cry and cry about breaking axles and pinions and wearing tires, but they are also the same people that don't run them. Most people that have them Acknowledge the driveablity problems and weld it in a way to be able to ignore the technical problems (read: they do it right)

There are the Driveablity problems, like push in the corners and the car will fight itself at low speeds. But I have seen plenty of track cars with Spools and Weldeds (Roadrace) and its something you have to adjust to.

Originally Posted by SR20DETpower

I wonder how long he actually drove on it like that. Sooner or later it would have a melt down. This is a great example for everyone with their RWD cars to atleast check the diff level every oil change. Inspecting for leaks more often then that is not a bad idea either.

It was for one Drift Day sooner or later yeah, Of coarse, thats an easier way to get a diff to seize than welding it. But the R200 will put up with a shit ton of abuse, some drifters in japan pack scrap metal into a VLSD for increased locking, the Casing and Output shafts deal with 400+ HP Clutch Kicks regular basis and wont put up a fight.

[2.2 Straight six]

Originally Posted by TRUBO_89

quaife sounds good for u then
its not quite an "lsd" but it should be good for the streets and any kinda performance stuff
a little pricy though ($1500)

a quaife diff is an lsd, however its different to "conventional" diffs, it is mechanical and not a clutch plate-type diff.

unless you put massive, an i mean massive amounts of power through it you'll probably never have to replace it.

so it'd probably end up saving you money in the long run.

[AWDSR20]

get a S15 LSD dude..300 $ or so, u need the out-put shaft dough...

VLSD is bad dude, ur engagement will suffer due to a slow and not complete transfer of power to the out side wheel, hence poor exit speed, and slow reaction to throttle, if any.

Welled LSD ... come on... u don't have $$ don't fix up cars... get a LSD.. 2 ,1.5, quaify even VLSD!

2cts

[R.W.240]

Originally Posted by SR20DETPower

many R200 owners say the main problem is loosening the pinion shaft above all. And these are people who have been tinkering with R200's for quite some years now. I don't hear much about axels breaking with welded diffs, but then again with any 240sx you don't hear much about people taking out axles with any diff.

Also the R200 works like any diff, its not special in that regard. You still have to shim it to get the gears to mesh properly, this is something u need to do on any differential. If it is not shimmed right, it will still work, BUT it can make more noise and wear out sooner, you can bet on that one.

You also have to realize that the natural torque of the engine is sent through the drivetrain, spun around the pinion shaft, and sent to the tires, on a drag car with a lot of power you will actually see one side lift up and one side hooks up better. The welded differential fights this as it locks it completely together all the time. You decide what is stronger... your welds and rear differential, or your torque from the engine.

Never heard of that. However 240 Guys dont really dig into diffs when theres a problem since Diffs are so cheap

When did I say the R200 was Special? I'm just saying it isnt a Piece of shit like the S2000 diff or the R180.

How many times do you want to tell me about gear whine from a inproperly shimmed diff? I know whats supposed to happen and I know plenty of people that dont have any problem with whine when they just use the shims off the old diff.

Everyone needs to quit acting like Weldeds are the scorge of the earth. For Drag Racing and Drifting they work as well or better than a Clutch type that costs 1100. Yeah... if you do a shitty job on the welds it will break... just like anyother peice on the car. For road Racing or street, yeah, maybe it wont be your style... but there are plenty of people that track welded diffs, and 100% locking Clutch types.

[Pavlo]

If your car will be for street or grip style racing Quaife is for you. As it never locks up the diff, instead it gives the torque to the wheel with traction, therefore imposible to do donuts and drifts. It is safer though for everyday driving as you will most likely never get your tail end lose.
It is pretty much like having a traction control unit for practically any car without the complex electronics, and best of all ther is never need for overhaul. Although a lot of Porsche people use it for their racecars, so you know it is a very well developed diff. for most of your needs.
I personally would save up and get myself that, as I am much more into grip then drifting, although sliding around is fun, I get much more pleasure out of being on the edge of your car's ability. Although it is much more dangerous as the speeds are higher, thats where my fun is at.