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View Full Version : OEM LSD Mod, JDM only so far... who's the 1st us guy...


sillyvia13
01-09-2009, 12:58 AM
Copied from a partsmax forum? Ionno up late nerding out...

****Secret diff mod: Instead of welding they put thrust washers in a VLSD to force it to lock up hard.
Initial torque is a very high 19kgf-m meaning it acts like a welded diff but noone has done this yet so thay don't know how long it will last.
Ratings: 0 to 5
5 on Initiation
3 on switch back (feint)
3 on ease of angle adjustment with gas petal
2 on sound

I have a jdm oem lsd with differnt gears, now with the rb25 in thurr, i see the lsd not grabbing so much...

anywho, anyone got anyinfo on this? anyon got a lsd out to peep it and report back! This could be a VERY nice mod to have, seeing some of us are cheap and dont wanna toss in $900 for a kazz...

well either way, I will try it and find out sooner or later, just hoping someone else is as stoked as I am...

Nismo aftermarket diff grabs at 8kgf, so this grabs mean...
Peace out.

slider2828
01-09-2009, 01:08 AM
I have heard about this, hella old school.... Talks about shimming some plates in the VLSD, but also wears out the lsd much faster too... Dunno the technical details....

palmdale_mob
01-09-2009, 01:13 AM
Its called shimming the lsd
Check this out
http://zilvia.net/f/s-chassis/200226-shimming-r200-j30-vlsd.html

JapanLandMan
01-09-2009, 01:14 AM
old news:repost::repost::repost:



:ddog:

smelly240
01-09-2009, 03:14 AM
yeah i did mine last summer...

it only grabs as hard as the shim's thickness... a 1.1 shim alone is not as tight - not as much like a welded.

fliprayzin240sx
01-09-2009, 06:59 AM
I knew a guy who slapped too thick of shims and needless to say, the diff detonated.

smelly240
01-09-2009, 07:13 AM
2 X .8 shims is the most i'd do - its what i did - if i had it to do over i'd do a 1.1 or a 1.2

sillyvia13
01-09-2009, 09:26 AM
2 X .8 shims is the most i'd do - its what i did - if i had it to do over i'd do a 1.1 or a 1.2

so you would say 1.2 mm is most?

sillyvia13
01-09-2009, 09:42 AM
out with the diff.

pdub
01-09-2009, 09:46 AM
damn.this sounds promising.:snoop:

SoSideways
01-09-2009, 09:58 AM
I was gonna do this to replace my welded, since welded around town seriously sucks...

But nobody has ever reported on how their diffs have held up after a period of time of driving on them, so I never looked into it too seriously...

So...

Those of you that have done this awhile back, please report on how they have held up and how much abuse they have had?

s13silvia88
01-13-2009, 07:03 PM
i second that ,wondering how long it lasts .

Sileighty_85
01-13-2009, 07:57 PM
Motegineon did this like 4+ Months ago still holding strong.

whitenoise
01-13-2009, 08:17 PM
have mine for 9 months now i put 3 .8 shims, acts like a 2way, scrapes tires when turning making screeching noise but im used to it i drive the car at least 20 miles a day for work and did all driftnirvana and clubloose events in 08 with it and it still holds on like the way it did when i did it . only thing is that u need to be aware of its behavior specially on the rainy and snowy days, hope this helps

nieko
01-13-2009, 08:29 PM
might as well weld it?

how everyone is describing it, it pretty much sounds like one.

just wanna try something new?

smelly240
01-14-2009, 04:29 AM
with a 1.2 it'll be better - the 2 .8's make it pretty locked. 3 .8's is just overkill since 2 .8's is a complete lock anyway.

a 1.1 or 1.2 gets it where its still streetable.

^^according to ozzies mine's locked hard.

SoSideways
01-14-2009, 07:44 AM
Yeah see, if I'm doing this, I want it to have a little give so that tight parking lot type turn stuff won't cause tire scrubbing, since I do have a welded diff already.

ae86dood
01-30-2009, 05:46 PM
Hey just curious Smelly240. Is that 1.1-1.2 on top of the existing shim thats in the vlsd or additional 1.1-1.2 all together total ?

Flicktitty
01-30-2009, 05:49 PM
MTNDRIFTER14 did it on his car i believe.

smelly240
01-30-2009, 07:30 PM
all together

MisawaJason
01-30-2009, 07:53 PM
I knew a guy who slapped too thick of shims and needless to say, the diff detonated.

yeah, we have a guy up here at our base who threw one too many shims in his diff. When it exploded his car jumped into the air a few inches. He posted up the video of it on our website, shit was crazy

fliprayzin240sx
01-30-2009, 10:50 PM
yeah, we have a guy up here at our base who threw one too many shims in his diff. When it exploded his car jumped into the air a few inches. He posted up the video of it on our website, shit was crazy

Yah, Slide Society in ZY was the guy im talking about. He was showing me how to shim it at the hobby shop one day. A week later, shit detonated cuz he used too large of shims. I need to check my diff and see if i got any shims...I might shim it to make it more aggressive.