Installing Tomei LSD 101 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Ritz S14 · 04-03-2005, 03:48 AM

95 240sx se 154k miles.
1st. Jack the car up.. My car was too low to go over the lift so I had to place a 2x4, and then use the lift.

Well..this is where it really begins.
1. Drain fluid, drain all then replace drain plug.

2. Unbolt drive shaft. Then unbolt output shafts.

3. Unbolt front 2 lower 17mm bolts, rear 19mm bolts, and ground wire. then remove carrier. Oh yeah.. I unbolted the sway bar brackets and one endlink to get it out of the way. i used a transmission jack to hold the diff in place.

4. Remove carrier, place on the ground..or in a bucket and unbolt the diff cover..I stole the bucket Idea from someone..but I can't remember who he is..sorry guy.

5. Remove the 17mm bolts holding the bearings in place, be SURE to take note of where your SHIMS go.. I F'd up on this..and was pondring for an how why the FAWK would the pinion gear not be solid with the ring gear.. then it came to me that I f'd up on shims placement. Luckilly, I didn't install it..and figure it out the hard way. It's difficult to remove, so you should pry it out. Don't worry, you wont break it with force. So remove diff.

The output shafts will just pop out with a soft to medium tap with a mallet.
6. Tomei doesn't come with pressed bearings.. So if you have access to a press.. then place bearing on tomei unit, put a flat piece of metal on it, and press press press.. do this to both sides.

7. now go do the opposite ove 1-5.

8. Pour in oil, drive in a figure 8 for 30 min. All that clunkin papapapapakkakaakakratataktaka is just the clutch plates engaging.

forgot t omention somehwere up there..before Installign the diff onto the car, make sure you remove the seals that go on the side of the diff/carrier, and reinstalling the new ones by placing the old ones on the new ones and tapping it in with a hammer. TO remove the seals, use a screw driver and pry it out. Careful not to marr the area where the seal sits, and inside of the seal wher ethe output shafts go on.

Too tired and it got too late for us to change the oil, so I'll do it tomorrow if I'm not tired.

hope you guys liked.

infinitexsound · 04-03-2005, 04:29 AM

SWEET i see you got the MOTUL brake fluid how much was that??????? nice i wonder what it feels like when u wet down the pavements doin figure 8's at full throttle... think youd hit the Gspots? big ups V i see ur car turning into a mean LADY.

sw20>>s14 · 04-03-2005, 04:31 AM

not knowledgable enough to add or critique. so...nice, very helpful.

Ritz S14 · 04-03-2005, 04:37 AM

brake fluid was $15 from auto RnD..bu tit's not enough to do a while brake system..wtf mate.

**mrmephistopheles** · 04-03-2005, 04:38 AM

Nice writeup, Smaug Tech.
The only thing I didn't see mentioned was the necessity to measure backlash and all that horseshit.
However, I've got many friends who've just slapped the diff in and called it a day with no ill effects...
I paid to have mine installed, just because I didn't want to be the one to fuck it up.

kingsol · 04-03-2005, 04:39 AM

i bet the install was so easy with a lift and tranny jack... all i had was jackstands and two crappy jacks. you'll love the new diff. which oil are you going to use when you replace it? remember not to use syn and use a friction modifer.

Ritz S14 · 04-03-2005, 04:44 AM

Sorry failed to mentioned that.

For the tomei/kaaz unit,m the backlash is same as OEM. So you use the OEM spacers to fit the new unit. My friend and I spent a WHOLE FRIGGIN OUT bitchin at why the pinion gear wouldn't engage the ring gear off the car. Figured this would cause a shitload of problems if it was completely installed. So I took a light to see the pinion gear, and it looked like it needed the exact same amount of shims that was on the other side of the axle. So We swapped that out..and taDIzzle. No more play, perfect engagement. Which turned out to a perfect Install.. We f'd up for about an hour.. Took about 3 hours to install..30min to drive.. so 3.5. This was my first time R&Ring a Diff(remove and replace). Awesome, the chatter is like friggin music..bhahaha

So yeah driving home.. I found it awkard that making the slightest movment in steering would make the diff rat-atat-tat. Hopefully draining and replacing the fluid will rid some of the noise. Right now the beater oil is some stuff my dad has in a 20gal barrel. Didn't wanna use the tomei oil.. cause it's too pretty to just be used and disposed.

Kingsol, thanks for the tip. Yeah.... it's easier to do things on a lift.. and I do give you guys who work in your garage/driveway/sidewalk major props. I replaced this girl I was "seeing" brother's clutch on the street.. man.. it was difficult but we got it done.

Oil.. Imma see if the cheap stuff works..cause we have a ton of it.. If it is the suck.. I'll gradually move up to what I feel will meet my needs. The fill bolt is such a bish to get to though..that's pretty much why I didn't drain it out tonight.

drftwerks · 04-03-2005, 02:02 PM

so you didnt bother to check out the pattern, for the ring/pinion, pinion preloead, new bearing for the carrier?

i guess thats one way to do it.

Ritz S14 · 04-03-2005, 05:14 PM

Which bearings are you talking about? The tomei LSD comes with new bearings.. I posted a pic of them being pressed in.

supportTHEezln · 04-03-2005, 06:24 PM

When I installed the Tomei, I basically just "slapped it in", similar to this thread, and I did check the pattern etc etc, and everything was exactly the same as oem. I had heard that it would be, but I checked anyways. And I also use buckets for diffs, and a trans jack.

Marcus · 03-01-2008, 05:40 PM

Just picked up one of these diffs about two hours ago and beginning install. So the backlash is the same as OEM? Just put the spacers back in the same place and its good?

!Zar! · 03-01-2008, 08:02 PM

Quote:

Originally Posted by Marcus

Just picked up one of these diffs about two hours ago and beginning install. So the backlash is the same as OEM? Just put the spacers back in the same place and its good?

Wow. busting open old ass threads.

NO. You can't just put the same amount of shims in. You need to get some dye and a feeler guage to set the mesh.

Ritz S14 · 03-01-2008, 08:49 PM

Quote:

Originally Posted by !Zar!

Wow. busting open old ass threads.

NO. You can't just put the same amount of shims in. You need to get some dye and a feeler guage to set the mesh.

aCtUaLLy, I rEuSed my olD shImz.

s13drob · 03-01-2008, 05:45 PM

good info... glad theres people out there willing to take pix and a write it up. thanx. we all appreciate it

Marcus · 03-01-2008, 08:02 PM

I know this thread is really old but any help would be great. thanks

!Zar! · 03-01-2008, 08:04 PM

The help lies in my post if you read the whole thing...

sleepy_s13 · 03-01-2008, 08:21 PM

I put the same amout of shims in mine and it works fine

Marcus · 03-01-2008, 09:46 PM

thanks for the help...and btw, before you bust my ass for opening an old ass thread, i took the time to f*ckin look for it before askin AGAIN

!Zar! · 03-02-2008, 03:02 AM

I'm still right. =)

Ritz S14 · 03-03-2008, 10:04 PM

Quote:

Originally Posted by !Zar!

I'm still right. =)

I've installed 2 Kaaz diffs, and 1 Tomei diff. Perfect results 3 of 3 times, and many many other guys have done this as well.

TRUENOCOUPE · 03-03-2008, 10:07 PM

This EDU is so funny on so many levels.

ma52a · 10-01-2019, 12:00 AM

im glad i found this thread. I have been putting off installing my tomei 1.5

I tried to create a thread but im new here so my post was not approved yet/at all.

i will order some solid diff bushings and perhaps subframe bushings to install while im under my car already and have it apart.

double handling big jobs like this is not fun, double handling this job because you broke something due to negligence just makes it worse.

jedi03 · 10-01-2019, 09:44 AM

I thought was funny my personal feel for doing my diff was spot on...set it, took to uncles to measure lash etc. took ~2 hours for me to do by feel and we spent ~6 hours measuring to come to same settings...incorrect can cause premature wear on bearings and/or gear teeth and sometimes the lock clutches too...easy way to check is to run some bearing grease on the teeth of the pumpkin gear and run it around...should be even transfer on the pinion gear...if its not adjust shims on either side to correct...if its bent get a new gear...haven't personally done a pinion gear bearing but I cant imagine it being any rougher lol

*brndck* · 10-01-2019, 11:15 AM

in my experience, the last is always correct unless you're changing pinion gear or bearing.

every time I've taken a stock diff and installed an aftermarket LSD, the lash has always been correct.

now, is it good practice to paint it and check the lash? ABSOLUTELY.

but, ive replaced a number of stock s13/14 diffs with aftermarket LSD and the lash has always been spot on.

04-03-2005, 03:48 AM	#1
Ritz S14 Post Whore! Join Date: Jul 2004 Location: C A L I F O R N I A Age: 43 Posts: 3,586 Trader Rating: (0) Feedback Score: 0 reviews	Installing Tomei LSD 101 95 240sx se 154k miles. 1st. Jack the car up.. My car was too low to go over the lift so I had to place a 2x4, and then use the lift. Well..this is where it really begins. 1. Drain fluid, drain all then replace drain plug. 2. Unbolt drive shaft. Then unbolt output shafts. 3. Unbolt front 2 lower 17mm bolts, rear 19mm bolts, and ground wire. then remove carrier. Oh yeah.. I unbolted the sway bar brackets and one endlink to get it out of the way. i used a transmission jack to hold the diff in place. 4. Remove carrier, place on the ground..or in a bucket and unbolt the diff cover..I stole the bucket Idea from someone..but I can't remember who he is..sorry guy. 5. Remove the 17mm bolts holding the bearings in place, be SURE to take note of where your SHIMS go.. I F'd up on this..and was pondring for an how why the FAWK would the pinion gear not be solid with the ring gear.. then it came to me that I f'd up on shims placement. Luckilly, I didn't install it..and figure it out the hard way. It's difficult to remove, so you should pry it out. Don't worry, you wont break it with force. So remove diff. The output shafts will just pop out with a soft to medium tap with a mallet. 6. Tomei doesn't come with pressed bearings.. So if you have access to a press.. then place bearing on tomei unit, put a flat piece of metal on it, and press press press.. do this to both sides. 7. now go do the opposite ove 1-5. 8. Pour in oil, drive in a figure 8 for 30 min. All that clunkin papapapapakkakaakakratataktaka is just the clutch plates engaging. forgot t omention somehwere up there..before Installign the diff onto the car, make sure you remove the seals that go on the side of the diff/carrier, and reinstalling the new ones by placing the old ones on the new ones and tapping it in with a hammer. TO remove the seals, use a screw driver and pry it out. Careful not to marr the area where the seal sits, and inside of the seal wher ethe output shafts go on. Too tired and it got too late for us to change the oil, so I'll do it tomorrow if I'm not tired. hope you guys liked.

04-03-2005, 04:29 AM	#2
infinitexsound Post Whore! Join Date: Sep 2003 Location: INtraweb Age: 42 Posts: 3,522 Trader Rating: (0) Feedback Score: 0 reviews	SWEET i see you got the MOTUL brake fluid how much was that??????? nice i wonder what it feels like when u wet down the pavements doin figure 8's at full throttle... think youd hit the Gspots? big ups V i see ur car turning into a mean LADY. __________________ S14 TrackSlut coming to a raceway near you... 510 TimeAttack on its way...

04-03-2005, 04:31 AM	#3
sw20>>s14 Post Whore! Join Date: Jan 2005 Location: bay area Posts: 5,656 Trader Rating: (19) Feedback Score: 19 reviews	not knowledgable enough to add or critique. so...nice, very helpful. __________________ s14\| y34\| 911 gts\| exige s\| 600rr\| r3\| 250r\| 85 girlfriend

04-03-2005, 04:39 AM	#6
kingsol Zilvia FREAK! Join Date: Jun 2003 Location: Berkeley/San Francisco Posts: 1,435 Trader Rating: (0) Feedback Score: 0 reviews	i bet the install was so easy with a lift and tranny jack... all i had was jackstands and two crappy jacks. you'll love the new diff. which oil are you going to use when you replace it? remember not to use syn and use a friction modifer. __________________ There is a time in every man's education when he arrives at the conviction that envy is ignorance; that imitation is suicide; that he must take himself for better for worse as his portion; that though the wide universe is full of good, no kernel of nourishing corn can come to him but through his toil bestowed on that plot of ground which is given to him to till. -Emerson

04-03-2005, 02:02 PM	#8
drftwerks Nissanaholic! Join Date: Mar 2004 Location: california Posts: 2,343 Trader Rating: (1) Feedback Score: 1 reviews	so you didnt bother to check out the pattern, for the ring/pinion, pinion preloead, new bearing for the carrier? i guess thats one way to do it. __________________ giantroboteyes.wordpress.com/

04-03-2005, 04:37 AM	#4
Ritz S14 Post Whore! Join Date: Jul 2004 Location: C A L I F O R N I A Age: 43 Posts: 3,586 Trader Rating: (0) Feedback Score: 0 reviews	brake fluid was $15 from auto RnD..bu tit's not enough to do a while brake system..wtf mate.

04-03-2005, 04:44 AM	#7
Ritz S14 Post Whore! Join Date: Jul 2004 Location: C A L I F O R N I A Age: 43 Posts: 3,586 Trader Rating: (0) Feedback Score: 0 reviews	Sorry failed to mentioned that. For the tomei/kaaz unit,m the backlash is same as OEM. So you use the OEM spacers to fit the new unit. My friend and I spent a WHOLE FRIGGIN OUT bitchin at why the pinion gear wouldn't engage the ring gear off the car. Figured this would cause a shitload of problems if it was completely installed. So I took a light to see the pinion gear, and it looked like it needed the exact same amount of shims that was on the other side of the axle. So We swapped that out..and taDIzzle. No more play, perfect engagement. Which turned out to a perfect Install.. We f'd up for about an hour.. Took about 3 hours to install..30min to drive.. so 3.5. This was my first time R&Ring a Diff(remove and replace). Awesome, the chatter is like friggin music..bhahaha So yeah driving home.. I found it awkard that making the slightest movment in steering would make the diff rat-atat-tat. Hopefully draining and replacing the fluid will rid some of the noise. Right now the beater oil is some stuff my dad has in a 20gal barrel. Didn't wanna use the tomei oil.. cause it's too pretty to just be used and disposed. Kingsol, thanks for the tip. Yeah.... it's easier to do things on a lift.. and I do give you guys who work in your garage/driveway/sidewalk major props. I replaced this girl I was "seeing" brother's clutch on the street.. man.. it was difficult but we got it done. Oil.. Imma see if the cheap stuff works..cause we have a ton of it.. If it is the suck.. I'll gradually move up to what I feel will meet my needs. The fill bolt is such a bish to get to though..that's pretty much why I didn't drain it out tonight.

04-03-2005, 05:14 PM	#9
Ritz S14 Post Whore! Join Date: Jul 2004 Location: C A L I F O R N I A Age: 43 Posts: 3,586 Trader Rating: (0) Feedback Score: 0 reviews	Which bearings are you talking about? The tomei LSD comes with new bearings.. I posted a pic of them being pressed in.

04-03-2005, 06:24 PM	#10
supportTHEezln Zilvia Junkie Join Date: Aug 2004 Location: Los Angeles Age: 40 Posts: 552 Trader Rating: (10) Feedback Score: 10 reviews	When I installed the Tomei, I basically just "slapped it in", similar to this thread, and I did check the pattern etc etc, and everything was exactly the same as oem. I had heard that it would be, but I checked anyways. And I also use buckets for diffs, and a trans jack.

03-01-2008, 05:40 PM	#11
Marcus Nissanaholic! Join Date: Nov 2007 Location: San Diego Age: 37 Posts: 2,087 Trader Rating: (18) Feedback Score: 18 reviews	Just picked up one of these diffs about two hours ago and beginning install. So the backlash is the same as OEM? Just put the spacers back in the same place and its good?

03-01-2008, 05:45 PM	#14
s13drob Zilvia Addict Join Date: Jan 2008 Location: socal Posts: 774 Trader Rating: (29) Feedback Score: 29 reviews	good info... glad theres people out there willing to take pix and a write it up. thanx. we all appreciate it

03-01-2008, 08:02 PM	#15
Marcus Nissanaholic! Join Date: Nov 2007 Location: San Diego Age: 37 Posts: 2,087 Trader Rating: (18) Feedback Score: 18 reviews	I know this thread is really old but any help would be great. thanks

03-01-2008, 08:04 PM	#16
!Zar! Post Whore! Join Date: Nov 2004 Location: North Korea Posts: 14,579 Trader Rating: (27) Feedback Score: 27 reviews	The help lies in my post if you read the whole thing... __________________

03-01-2008, 08:21 PM	#17
sleepy_s13 Zilvia Junkie Join Date: May 2006 Location: West Covina Age: 38 Posts: 569 Trader Rating: (1) Feedback Score: 1 reviews	I put the same amout of shims in mine and it works fine __________________ $K:\pics\Cars\new sig bridge copy.jpg$

03-01-2008, 09:46 PM	#18
Marcus Nissanaholic! Join Date: Nov 2007 Location: San Diego Age: 37 Posts: 2,087 Trader Rating: (18) Feedback Score: 18 reviews	thanks for the help...and btw, before you bust my ass for opening an old ass thread, i took the time to f*ckin look for it before askin AGAIN

03-02-2008, 03:02 AM	#19
!Zar! Post Whore! Join Date: Nov 2004 Location: North Korea Posts: 14,579 Trader Rating: (27) Feedback Score: 27 reviews	I'm still right. =) __________________

03-03-2008, 10:07 PM	#21
TRUENOCOUPE Nissanaholic! Join Date: Mar 2003 Location: Norcal Drift Division Age: 42 Posts: 1,642 Trader Rating: (0) Feedback Score: 0 reviews	This EDU is so funny on so many levels. __________________ DRIFTxBATTLE IS GONE \| MYSPACE \| NORCAL DRIFT \| ZipTied Tee's

10-01-2019, 12:00 AM	#22
ma52a Join Date: Sep 2019 Location: california Age: 36 Posts: 5 Trader Rating: (0) Feedback Score: 0 reviews	so0o happie im glad i found this thread. I have been putting off installing my tomei 1.5 I tried to create a thread but im new here so my post was not approved yet/at all. i will order some solid diff bushings and perhaps subframe bushings to install while im under my car already and have it apart. double handling big jobs like this is not fun, double handling this job because you broke something due to negligence just makes it worse.

10-01-2019, 09:44 AM	#23
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,842 Trader Rating: (8) Feedback Score: 8 reviews	I thought was funny my personal feel for doing my diff was spot on...set it, took to uncles to measure lash etc. took ~2 hours for me to do by feel and we spent ~6 hours measuring to come to same settings...incorrect can cause premature wear on bearings and/or gear teeth and sometimes the lock clutches too...easy way to check is to run some bearing grease on the teeth of the pumpkin gear and run it around...should be even transfer on the pinion gear...if its not adjust shims on either side to correct...if its bent get a new gear...haven't personally done a pinion gear bearing but I cant imagine it being any rougher lol