vlsd install questions

[supreme_1]

i already searched and came up with alot of things that i needed to know but there were a couple of things i was still unclear about.

i am putting a s14 vlsd into a s13 pumpkin

upon installing my s14 vlsd output shafts into my s13 pumpkin, how will i know that they snapped into place? do i hear it pop on?or do i have to just look at the seal to see if its flush with the output shaft?

do i have to install the s14 ring gear onto my vlsd or could i use my s13 open diff vlsd ring gear?

and could i use my stock open diff pinion gear or will i have to install the s14 pinion gear?

[RedtopTech]

first off, you ca n just switch the pumpkins.
but if all you have is the carrier then i would rec. replacing the bearings at this time. count the teeth on the s14 pinion and make sure its the same as the s13 pumpkin. then simply install the carrier w/ pinion and use a dial indicator to check backlash.if its in spec you are good to go. if not you can buy the proper shims from nissan

[supreme_1]

i know for a fact that the s14 internals will go into a s13 pumpkin. i already got new bearings for the lsd. i will go ahead and count the teeth on the pinion gear later on tonight, but i am not sure if the teeth are cut the same and if they are the same depth, and what not.

i was thinking about keeping my stock pinion gear in there because i saw a thread about a guy installing his kaaz 2way, and used his stock pinion, and when he put the dye on the teeth it was evenly colored.so im guessing i could use my stock pinion. where would the shims be placed if i had to install them?

[soon2bs13]

just take the S13 top casing and swap it on the S14... unless they have the 5 bolt vs. 6 bolt...i dunno...hth...

[supreme_1]

i bought the vlsd in a bag. so it wasnt in any pumpkin to begin with.

another question. are the s14 lsd gear ratios the same as the s13? ( i was wondering this because i might match the pinion gear of the open with the ring gear of the s14 vlsd.

s14 vlsd 4.08?
s13 open diff 4.08?

[soon2bs13]

i bought the vlsd in a bag. so it wasnt in any pumpkin to begin with.

another question. are the s14 lsd gear ratios the same as the s13? ( i was wondering this because i might match the pinion gear of the open with the ring gear of the s14 vlsd.

s14 vlsd 4.10?
s13 open diff 4.10?

oooh, wow...that stinks... i don't think they are the same... there is a thread on here that has all the ratios...either here or 240sxforums, i forgot...

[supreme_1]

correction i found that s14 gear ratios are 4.08 and s13 gear ratios are 4.08 also.

otherwise im just gonna bolt my s13 open ring gear to the vlsd unit. just to play it safe

[gotta240]

you should use both s14 or both s13 gears if possible. Gears are kinda like clutches... Once they mate to the flywheel, they are a match.

[supreme_1]

yup, thats what a friend told me after i posted this. i compared it to rocker arms and lifters. but same concept.

[supreme_1]

so today i attempted to install my s14 vlsd into the s13 pumpkin. i got everything in good exept for the shorter side output shaft.
i took the c clip out of the diff, and installed it onto the shorter output shaft since it wouldnt go in with the c clip in the diff. so after my friend told me to pound it in the diff it is almost all the way in but there is about 1/2 more from it totally sitting. and now the output shaft is totally stuck. i tried pounding it out from the other side, i tried to use a slide hammer/puller, i tried to hammer the output shaft out. but it isnt budging. has anyone else ever encountered this problem? and anyone know whats holding it in and how i could take it out?

btw it is vlsd output shafts from an s14.

[Ragnarok043]

so today i attempted to install my s14 vlsd into the s13 pumpkin. i got everything in good exept for the shorter side output shaft.
i took the c clip out of the diff, and installed it onto the shorter output shaft since it wouldnt go in with the c clip in the diff. so after my friend told me to pound it in the diff it is almost all the way in but there is about 1/2 more from it totally sitting. and now the output shaft is totally stuck. i tried pounding it out from the other side, i tried to use a slide hammer/puller, i tried to hammer the output shaft out. but it isnt budging. has anyone else ever encountered this problem? and anyone know whats holding it in and how i could take it out?

btw it is vlsd output shafts from an s14.

i ran into a similar prob when installing my VLSD, i took the pumpkin apart and when i put it back together there was still about 1/2" of play left on one of the output shaft. i thought it was the C clip too and took that out and kept trying to hammer it in. turns out i swapped the output shaft around. to get the output shaft that i had tried to hammer in, i stuck an extension through the pumpkin on other end and tapped it out.

[supreme_1]

what do you mean by you swapped the output shaft around?u swapped the long one to oone side and the short one to the other side? i am pretty sure i got them correct because i was able to get the long one into the other side and it went in easy.on your short output shaft did you have a c clip on it? and on the side of the long output shaft side was there another c clip inside when you looked inside the diff?

i already tried to tap it out like how you said, but its stuck.

[Ragnarok043]

yes im fairly certain you have the shaft switched, my issue was with the short shaft as well. if you take a look at this pic http://importnut.net/240pics/LSDswap/DSC02071.JPG at the base of the shaft notice how much longer the short shaft is not splined which is about 1/2" more than the long shaft. thats why the long shaft can easily fit on both ends, and the short shaft only fits in one side.

[supreme_1]

yup, i believe i did put them in wrong. would there be any way to get it out? i tried everything to get it out.

[Ragnarok043]

the best way to get it out is to put an extension through the pumpkin and tap it out. if youre still having trouble, try securing the pumpkin so that all the force goes into the output shaft. have a friend stand on it or better yet secure it to a bench vise.

[supreme_1]

i really appreciate your ideas, i was trying to think of some myself and was able to think of a couple unique ways. if the c clip is stuck, and i do end up pounding the output shaft out, do you think that the teeth will be messed up? because its not cross threaded and would there be any way to put the c clip back into the diff? since the previous one was removed?

[Ragnarok043]

nahh i dont think the c clip with mess up the splines, and the diff should be fine without it. the c clip just stops the output shaft from sliding out, but once you bolt it up to the axles it will be fine.

[supreme_1]

sweet, i'll let you know how it goes.