about LSD

[deevietboi]

k well ive been reading up on dif types of lsd'si currently own a 1990 sohc ka 240sx black hatch and to replace my open dif for a lsd. well so fare ive been reading on the vlsd that come off the j30 and off a 240sx. i wanted to no if the install includes the sohc ka not just the DE.

k well so far this is what i readj30 95-96 vlsd will bolt right up to my 240sx (3 2bolt pattern ) the only thing that needs to be changed here in the back plate or somthing right?

240sx vlsd no abs will bolt right up i read the fun with legal lsd of this site and still little iffy

hmm i dunno what to ask at the time its about 330am.... my brain isnt working at full speed right now so if yall have anything ud like to add please do id like to read this when i get up

[deevietboi]

o and its a 4lug if thats any help at all....

o do i need a different drive shaft or no?also heard that the bolts wont reach so i will be needing long bolts for the j30 vlsd? if so what sizes?

bump b4 bed

[Fla240sx]

j30 diffs need axles too

you can use a ABS 240sx diff, there is enough play in the driveshaft to accept it.......... I don't know if S14 ones are different then S13 ones tho as far as snout length... I know a S13 hicas ABS diff will go into a S13 non hicas/non abs........

and If I'm not mistaken, every 240sx that has a VLSD stock should have ABS??? either 13 or s14

[spindrift187]

J30 diffs do not need axles if you get the 6 bolt(3 2 bolt pattern you are referring to) one.

The plate that needs to be switched is the diff cover( large plate you see when looking underneath your car from the rear). The J30 has 2 bolts that go to the car as the 240sx has 4.

And you are correct about the bolts not reaching(stock 240sx bolts), just the 2 front ones, I just went to a local hardware store with my old 240 bolts and matched them up with longer ones. Hope this helps ya!

[deevietboi]

hmm i dont need to change the axles for the j30 vlsd for years 95-96 or 95+?

about the dif cover change... so i use my stock dif over and bolt it to the j30?!?!? will i need to drill some holes or just bolt 2 bolts and leave the other 2 empty???... sooorry i just like to ask questions till i feel i got the right answer

well im not to much of a hands on guy im still learning lots but i have a dad that knows and lots of friends to help me

so woundering what route i should take?which would be less stressfull (doesnt look to hard)

240sx vlsd OR j30 vlsd?

well imma go under the car to see that my drive shaft looks like and when i come back ill have a little easier time figuring this lsd thing out

I WANT BOTH TIRES TO BURN!!!

[Slappy]

You dont want a J30 VLSD. Reason is the gears are way to tall. You will lose .4% acceleration. What you want is ....

Non Turbo 300ZX VLSD , bolts right up and has same gear ratios as your open diff.

JDM S13 VLSD , again , bolts right up , same gears.

HICAS S13 VLSD , most of HICAS S13's came with the VLSD.

[Sharkey]

Kaaz 2way LSD, imo

[deevietboi]

You dont want a J30 VLSD. Reason is the gears are way to tall. You will lose .4% acceleration. What you want is ....

Non Turbo 300ZX VLSD , bolts right up and has same gear ratios as your open diff.

JDM S13 VLSD , again , bolts right up , same gears.

HICAS S13 VLSD , most of HICAS S13's came with the VLSD.

first off lemme ask this noob question really quick HICAS?k well i heard the 300zx isnt that easy of a swap i here u gotta get the driveshaft or a 3 2bolt thing. can someone give me more info on the 300zx?

i thinking about s13 vlsd or j30 lsd what do u think is less work and money?

[Encryptshun]

first off lemme ask this noob question really quick HICAS?what do u think is less work and money?

HICAS is the Nissan all-wheel steering system found on Skylines and the 240SX SEs. (I have one of those).

IMHO, best way would be to buy an aftermarket diff (Kaaz makes a good one). Else, you could try an S13 VLSD. Warning about the VLSD set-ups, though, the fluid tends to lose viscosity under heavy driving, thereby creating more slip. If you're drifting, VLSD is fine while you learn, but you'll eventually want to go to a mechanical diff.

[deevietboi]

ya well so ive heard about them vlsd dying out and acting like a dam open diff

well seeing how my motor is 186k sohc....my motor probly will die out b4 the vlsd huh?i just hope the thing will last for a good few 1-2years

[Slappy]

ya well so ive heard about them vlsd dying out and acting like a dam open diff

well seeing how my motor is 186k sohc....my motor probly will die out b4 the vlsd huh?i just hope the thing will last for a good few 1-2years

The fluid inside a VLSD WILL heat up , and will act similiar to an open , but a VLSD will always send torque to both wheels.

VLSD > Open diff

And who the hell can afford a REAL LSD?

[nightkid86]

"You dont want a J30 VLSD. Reason is the gears are way to tall. You will lose .4% acceleration. What you want is ...."

less than half of one percent isn't much at all. I actually wanted a j30 vlsd in order to have taller gears and not be at 3,500 rpm while on the interstate which is a huge waste of gas.

also, whoever said the 240sx has 4 bolts on the diff cover is only partially correct as the s14 came with 2 bolts on the diff cover.

I ended up swapping a s13 silvia/180sx vlsd into my s14 and am somewhat happy. Its used so it takes it a while to warm up sometimes before it actually works.

[Slappy]

"You dont want a J30 VLSD. Reason is the gears are way to tall. You will lose .4% acceleration. What you want is ...."

less than half of one percent isn't much at all. I actually wanted a j30 vlsd in order to have taller gears and not be at 3,500 rpm while on the interstate which is a huge waste of gas.

also, whoever said the 240sx has 4 bolts on the diff cover is only partially correct as the s14 came with 2 bolts on the diff cover.

I ended up swapping a s13 silvia/180sx vlsd into my s14 and am somewhat happy. Its used so it takes it a while to warm up sometimes before it actually works.

Your point is?

[nightkid86]

For a street driven DD I would also not recommend a 2 way lsd. 1.5 is what you probably want.

Don't weld the diff in a street driven car, it sucks.

[Slappy]

For a street driven DD I would also not recommend a 2 way lsd. 1.5 is what you probably want.

Don't weld the diff in a street driven car, it sucks.

Agreed. 2 ways and welded diffs are scary in the rain if you dont use common sence. Plus welded diffs are way harsh on rear sub frames.

[deevietboi]

well taking a look at my dif yesterdasy and saw that it is a 3 2bolt driveshaft. so i dont think im going with the vlsd from the jdsm s13 sence it has a 5 1bolt flange and im not looking to change my driveshaft or axle . so j30 vlsd is it for me... there isnt any other bolt on lsd i can put on my 240sx with out mods?

i mean how many miles could a lsd be driven on b4 is starts to chuck? i mean i am lookin for a 95-96 j30 vlsd there shouldnt be to much miles on them right? o plus its not like im going to be drifting this thing i mean i will but not a lot... plus i could probly get a j30 for cheap 80-120 bucks, get some long bolts change the diff cover and boom i got a fatty burn out. i mean its that easy right? anyone can do that... unless im missing a few steps.... i dunno its just makes things easier and less money to spend

slappy y do u hate the j30 vlsd so much? i mean are they that much c#ap?

[importer]

There is always the S15 helical, Quaife, or the Balltec LSDs.Just watch out for the chinese rip-off of the Quaife, the OBX......

[deevietboi]

yea i was thinkin about the s15 hlsd cause that would last longer right? plus its bolt on.

i also heard u can put a lsd gear into a open difany info on that would be great

i would like to get a type of lsd by the end on this yearso im keepin options open

[Nick51]

here this shows a list of all the lsd's you can swap

http://www.ka24development.com/vlsd.html

"A problem you may run in to when using either the J30 or 240SX (with ABS) diff is the extra length at the snout of the diff, which houses the ABS sensor. This adds about 3/4 of an inch of length to the diff, but is usually not a problem, as your driveshaft and transmission mounts should have enough play to negate this extra length"

so just keep that in mind to