My LSD don't grip both tires no more with drag radials. Is there a rebuild kit for these or a upgrade I can get or am I looking at getting an after market. I'd rather just upgrade the one I have, don't have a lot of $$$. Thanks in advance

 

that makes no sense.

For drag cars, the stock LSD is plenty. Otherwise, you'll need to sell the m2b4, and pick up an m2f4, m2s4, m2a4, basically anythign else except an m2b4 or a t2xx and put a quaife lsd in it.

 

So there is no rebuild kits and the tranny I have wont work for after market diff's . Don't know the tranny code but it is a JDM with LSD. Its been slipping more than it should for awhile now and just went to the track last weekend and nothing but the right tire will spin

 

I always thought that the OEM units were gear driven, not clutch units, there should be no slip at all unless I am misunderstanding something. Just out of curiosity, maybe you should check the trans code to make sure that you actually got an LSD transmission.

 

yeah, and if theres no m2b4 code on it you should be able to see right through were your axles go in, if theres a bar there then, its not lsd

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Giant_Bean &raquo;</TD></TR><TR><TD CLASS="quote">I always thought that the OEM units were gear driven, not clutch units, there should be no slip at all unless I am misunderstanding something. Just out of curiosity, maybe you should check the trans code to make sure that you actually got an LSD transmission.</TD></TR></TABLE>

correct, which is why I said that it should be plenty

 

Yes before we go any deeper into this could you please post your transmission code? Its a possibility you have a non-LSD transmission with some some half-*** attempt at an LSD by using something similar to the "Phantom Grip" and its finally starting to give out. By no means am I dissing you or your car but if you aren't the original owner of the tranny you never know what the previous owner could have thrown in.

 

here is an example pic if you dont know where to look. look next to your starter and right under the top radiator hose.

 

Yes its a M2B4, it has a LSD and Im telling u guys it slips. Going around a corner I can only spin one wheel just like a non LSD tranny would and at the track with drag radials only one spins at burn out and leaving the line. It didn't always slip, it recently started bout 1 year ago and now it just sucks. Im telling u its worn out

 

if you want to put in an aftermanrket one you need a non lsd case, best to find a cheap blown one, and steal its casing, beacuse the m2b4 has a 1/2 inch wider case to accomadate for the lsd, there may be a way to use the m2b4 trans though i think i read somewhere they had to use a lot of shims, i would call quaife or whomever your gonna buy a lsd from and ask them.

also have you tried using a different trans fluid or even just change it.

 

Oil is somewhat fresh. Mobile 1 75w90. So the case is bigger, wouldn't that be ok. And I have a 90-93 accord tranny sittin here, would that be better, and maybe I could switch the final drive to get it alittle closer???


Modified by 93accordsleeper at 6:42 PM 4/6/2008

 

Put a quaife in the accord tranny. Take apart the m2b4 and see what it looks like inside the diff.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93accordsleeper &raquo;</TD></TR><TR><TD CLASS="quote">Yes its a M2B4, it has a LSD and Im telling u guys it slips. Going around a corner I can only spin one wheel just like a non LSD tranny would and at the track with drag radials only one spins at burn out and leaving the line. It didn't always slip, it recently started bout 1 year ago and now it just sucks. Im telling u its worn out </TD></TR></TABLE>

Thing is, helical LSDs don't really wear out dude, I guess the teeth on the gears could be worn super bad, but I don't see how that would have happened. I'd like to see the thing if you do end up tearing it down.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mgags7 &raquo;</TD></TR><TR><TD CLASS="quote">I'd like to see the thing if you do end up tearing it down.</TD></TR></TABLE>

Yes, post pics!

 

Matt, Honda oem lsd's do stop working, but you'd def hear bad sounds from the trans. While not super-common itr diff's have been known to fail.

 

What if its not a gear cause there's no noise coming from tranny! &lt;center&gt;

&lt;/center&gt;

 

The washers can't 'wear out' as they're not friction surface. The Honda lsd might not even have washers, as they're only used for preload.

There is a test procedure for the oem lsd with it installed in the vehicle. It's in the ITR service manual, although whether the same values can be applied to the m2b4, I'm not sure.. I'm sure it's also posted in that forum.

 

I think the friction surfaces are the outside faces of the gears labeled 6&7. When torque is put through the diff, those two gear sets push out against the housing.

Of course, you could have a viscous diff also. There have been a few threads on these two setups, but if it's slipping excessively you're going to have to work on it to improve the situation. The easiest will probably be installing a quaife in your extra tranny. If you do that now, you can just swap it out and your car won't be in pieces while you wait for parts or tinker with the OEM lsd.


Modified by flyrod at 4:57 PM 4/7/2008

 

Do you guys know if the final drive from M2B4 will work in the accord tranny?

 

With exception of the T2W4 you cannot use differential parts from any factory LSD equipped transmission.

Why would you want to use a "broken" differential anyway?

 

Are you guys sure that only a gear type was used??? I thought I read somewhere that some OEM units were clutch type....internet wisdommmmmm

 

yeah I talked to the owner of gear-speed today and he said once the lsd goes in the M2B4 tranny, he said the best thing I can do is take it to my nearest scrap yard and get money for the metal. He said the last costumer that wanted a lsd upgrade in a M2B4 ended up spending $3,500 with all the mods he had to do to make it work.

 

I find it funny that you're just assuming the lsd stopped working without any actual proof.

 

Come over and take the car for a drive, That will be all the proof I need when ur smoking 1 tire off going around ur first corner

 

At the very least, perform the test indicated in the itr manual.