Final Drive Gears: LSD Swap Related

[MrMigs]

I have an s14, and I'm planning on finding the lsd from a 95+ Infinity J30 to swap into my car. The only prob is that the J30 lsd has a slightly lower gear ratio. Stock 240sx = 4.08 and J30 = 3.91something.

Would I be able to take the final drive gear from my 240sx open-diff and put it into the J30 lsd?

Or maybe the reverse, put all of the J30 diff internals into my 240sx diff housing and keep the 240sx final drive gear?

[uiuc240]

yes, you can, but that sorta kills the whole reason for getting a preassembled diff. you'll have to have everything aligned and all that shiz. might as well get a set of Nismo gears of whatever ratio you want. or just get a Kaaz or a Nismo or a Quaife or a Cusco diff and use the gears you already have.

Eric

[saga240]

oh well michael, i guess we're going to be suffering with some funky gear ratios.. yeehaw this LSD swap thing is going to be fun huh.

:D

[Steeles]

the 3.91 wont be bad acceleration will be down slightly but you'll have a nice big top speed. my nismo LSD came with 4.36 gears in it. makes 1st gear pretty useless :D

[MrMigs]

Yeah... I was driving around today... and hmmm 1st gear does seem kinda short, well at least to me... stock form that is. I guess longer gearing wouldn't hurt at all, if any... that is, I'd be willing to try it out.

And yes... lsd swap is going to be awesome phun :eek:

[Steeles]

Originally posted by MrMigs
Yeah... I was driving around today... and hmmm 1st gear does seem kinda short, well at least to me... stock form that is. I guess longer gearing wouldn't hurt at all, if any... that is, I'd be willing to try it out.

And yes... lsd swap is going to be awesome phun :eek:

yeah that 3.9 will make 1st last a bit. I believe it was uiuinja that had a gearing calculator, we put mine through and 1st gear should top out on my setup at like 35mph. and iirc thats down almost 10mph from stock setup

[MrMigs]

sounds cool. Where might i be able to find this.... "calculator" :p

[saga240]

lol michael just use your head for more calculations.. =P make sure theyre right.. hah we dont wanna have a screwed up ratios when we swap.. hah

[MrMigs]

LoL that would be funny if it got all fsucked up so I could take 1st gear to 80mph hahaha... 1st gear ownage! :D

[240racer]

how does the cost compare when getting a just the kaaz or nismo internals and installing them in the open diff case I already have?

[Steeles]

Originally posted by 240racer
how does the cost compare when getting a just the kaaz or nismo internals and installing them in the open diff case I already have?

compared to what? a J30 or other R200 vlsd? its hella high. you can pick up a j30 etc. etc. for like 300 with a Kaaz or nismo your looking at at LEAST 700 unless Guido finds one that "fell off the truck" then you got labor charges to put the thing in to your diff on top of that. BUT the Kaaz and Nismo units are 100 times better than a stock vlsd.

[MrMigs]

BUT the Kaaz and Nismo units are 100 times better than a stock vlsd.

Truths... I'll be using the VLSD as something to "practice with" until I get a high-paying job. Indeed, if I had the money, I'd go with a KAAZ. Indeed, I say!! :D :eek:

[Steeles]

Originally posted by MrMigs
Truths... I'll be using the VLSD as something to "practice with" until I get a high-paying job. Indeed, if I had the money, I'd go with a KAAZ. Indeed, I say!! :D :eek:

:) nothing wrong with that. my reply was more directed to 240racer's comment though ;)

[projectsilvia1]

in my 93 240sx i can hit 35 in first gear..stock diff
your j30 rear end will make your car slower until high speeds
but if you are into freeway battles then go for it..
Mike

[MrMigs]

hehe Shluperu wangan rashingu... shpeed kuraru! :D

[Phlip]

According to 240SX.org, the diff in the J30 and N/A Z32 will have the same ratio as the 240SX, and therefore, should yield no problem in gearing... Brandon, with his 4.36, will redline 4th gear and sounds like it is falling apart at low speeds, strangely enough this makes me jealous, I think I will steal his car...

[Steeles]

Originally posted by PHLIP
According to 240SX.org, the diff in the J30 and N/A Z32 will have the same ratio as the 240SX, and therefore, should yield no problem in gearing... Brandon, with his 4.36, will redline 4th gear and sounds like it is falling apart at low speeds, strangely enough this makes me jealous, I think I will steal his car...

? what'd you just say about my car? english mother Fu<ker! do you speak it? :D I hit the speed limiter in 4th gear, i can hit the rev limiter in 1st - 3rd gear :) as for the "i think i broke something" sound around low speed corners.. well that just means its working :cool: :D and how you gonna steal my car? I can see that purple monster coming a mile away, dont make me shave those dreads :mad:

[uiuc240]

here's the calculator (and don't forget who gave this to you :D )

http://www.sgmotorsports.com/mph.htm

Eric

[Steeles]

Originally posted by uiuc240
here's the calculator (and don't forget who gave this to you :D )

http://www.sgmotorsports.com/mph.htm

Eric

LOL its not that I forget its just that I can never remember how to spell your SN! :eek: I'll remeber next time :D

[uiuc240]

hahah. Yeah, I think you are mixing two people together.

There's uuninja who has an S14 and a turbo KA.

Then there's me, uiuc240 who has an S13 with SR20DET. My name is actually rather simple. I go to the University of Illinios at Urbana-Champaign, and I drive a 240. Hence, uiuc240. w3rd.

Eric

[Steeles]

Originally posted by uiuc240
hahah. Yeah, I think you are mixing two people together.

There's uuninja who has an S14 and a turbo KA.

Then there's me, uiuc240 who has an S13 with SR20DET. My name is actually rather simple. I go to the University of Illinios at Urbana-Champaign, and I drive a 240. Hence, uiuc240. w3rd.

Eric

DOH! quite possibly :) I've been through there to some bar star something or another? played 80s music.... its been a looong time (like 96 I think) since I was there.. man Im gettin old....

[Phlip]

Originally posted by Steeles
? what'd you just say about my car? english mother Fu<ker! do you speak it? :D I hit the speed limiter in 4th gear, i can hit the rev limiter in 1st - 3rd gear :) as for the "i think i broke something" sound around low speed corners.. well that just means its working :cool: :D and how you gonna steal my car? I can see that purple monster coming a mile away, dont make me shave those dreads :mad:

You won't call my car purple again Brandon and you will NOT be cutting my hair, BRANDON :mad: !!! And on top of that, you can kill the top speed and not worry about any of that anymore if you would crwl your lazy ass under the car BRANDON :mad:

[MrMigs]

Thanks uciuic :D :eek:

[Steeles]

Originally posted by PHLIP
You won't call my car purple again Brandon and you will NOT be cutting my hair, BRANDON :mad: !!! And on top of that, you can kill the top speed and not worry about any of that anymore if you would crwl your lazy ass under the car BRANDON :mad:

blah bite me. Power FC will be in the car next week. :)

[Phlip]

Originally posted by Steeles
blah bite me. Power FC will be in the car next week. :)
Cool beans, Mr. Duct Tape!!!

[saga240]

duct tape.. bleh its all about the electrical tape :p

[Steeles]

Originally posted by saga240
duct tape.. bleh its all about the electrical tape :p

not when its holding my hood down/together. its all about strenf. (thats ebonics for strength) and this cheap crap I have now isnt working very well. Im retaping it every couple of days. I need some of that good ol boy brand duct tape. you know the kind that can hold a tractor together ? yeah that stuff. the kind you can lay in a field sticky side up and catch a water buffalo with....