LSD is shot need a rebuild kit
 

^^^ where can i get the clutches to rebuild the LSD and i heard you should put and extra dixk in it?

thanks

You can get the parts at Mazdatrix. http://www.mazdatrix.com/g8.htm They have thicker discs that you can get for a stronger lockup. It would probably be best to talk to them and see what they recommend. I hear that you can add 1 or 2 of the thicker discs with the rest stock depending on how tight you want it.

err i was just quoted $500+ to re build my lsd errr is there any other way aroud it?

Sure, for 500 bucks you could probably rebuild your's 3 times yourself. All you have to do is learn how.

lol i can rebuild it my self that..was a quote for just parts from Mazdatrix

Is 500 dollars just for the clutches? No way, maybe they are saying for a full LSD rebuild, including new drive pinion, ring gear, cage, clutches, bearing etc...

Mazdatrix is asking a lot for those discs and you will need several of each type and the springs.Also,it would be advisable to replace the differential bearings if your gonna go ahead with an LSD rebuild.....so yea,it can easily get into the high 100's of dollors even if you find a better price on the LSD parts.

http://www.mazdatrix.com/g8.htm

nope that was for

2 cone springs- $90.02
4 friction plates- $138.52
4 friction discs- $192.12
2 thrust washers- $29.28
total = 449.94

when i was on the phone with him he said like $500 i just went to the seb sit all looked up the prices... so does any1 else know of a cheeper way to rebuild 1? im going to take it apart tomorrow and see what all needs to be replaced

i need to rebuild the one on my SE. damn didnt realize it was so costly just for parts.

i read a bit and rebuilding them yourself looks fairly easy aslong as you pay attention to details.

ohwell, looks like i'll be in the market for a rebuilt kit aswell. nothing like spending more money on parts than you did on the entire car.

Noshit. For that kind of money I think I would pick up another lsd unit and steal the discs out it.

lol i have spent wayyyyyy more on my car than i paid for it..paid 900.. i think my cars tab is up to 6k and thats b4 i rebuild the lsd

on the bright side i have a lsd out of a 82 that im going to rob parts out of and get 1 lsd working woot :) 81-88 use the same parts

Spicer track-lock and power-lock LSD's can be rebuilt for less than $100.Same basic parts and matarials.They arent plated in gold or anything!
Mazdatrix's price is based on what they cost from Mazda,since they sell OEM parts.And everyone knows the dealers get an arm and a leg.

There is likely to be another source for LSD rebuild parts.90% of Japanese automakers get their rearend parts from the same manufacturer,perhaps the parts can be sourced directly,circumventing Mazda altogether.

you have any ideas? if so im all game... errr OEM prices :Kill1:

http://www.technotoytuning.com/t3_si...d_rebuild.html

Worth giving them a call.
They might have some kits availible that would fit in the FB LSD.Like I said,most Japanese cars share common/similar rearend components.The AE86 is about the same era as the FB,so its a possibility.

Anyone got a MazdaMotorSports membership that can access the site and get us some LSD rebuild prices?



http://www.mazdamotorsports.com/weba...0001&langId=-1

1/- What is actually shot in the LSD gear case ??.

2/- What are the thickness sizes of thrust washers,friction plates,friction disc ??.

3/- You can add another disc,this is just a different form of shimming.

4/- Don't forget you can machine down the inner left differential case ( cone face) a little to obtain more crush.

Cheers the old boy

Ps- sorry I don't have a picture of the inner case ( cone face )to point to.

Fifteen minutes work in the lathe.

thanks for you help if you could get a pic that would be alot of help

not to sure what is shot in it but i know its bad..im pullin it out tomorrow....the pass side will only spin the driver side 1 out of every 10 times of trying to get it to spin. the driver side will spin the pass side but if you put your hand on it that is enought to make it stop sping.....yes it is a lsd rear end

This is exactly what I did with mine last year because it was spinning one wheel when exiting slow corners during autocross. I measured every plate and thrust washer, determined what would be required to get it just a little tighter than stock, and just replaced those.
The most worn item was one of the thrust washers, the plates had just a few thousands of an inch wear each. So I just ordered the oversize thrustwashers from Mazdatrix which made up for the little wear on each plate and tightened the whole unit a little more than stock. It has been working well since then.

So determine what is worn the most and replace them. If you make it to tight you could induce understeer.

Bruce

Good point.

Theres no reason to order 500 bucks worth of plates and springs untill you tear the unit down and measure everything against the factory specs.You might only need a few parts to get things grippy again.

Ok have pics.

First thing,In this example is don't presume anything.

Handy hints-
Treat all parts as individuals no two gear cases are every the same,
( Has the Left inner differential case been machined before ??.)
Recheck measurements
Measure twice and cut once,



Step 1:- With the Left inner differential case.
Measure the depth between the two surfaces that I've marked X.
In this example the depth = aproximately 4.60mm.

Step 2:- With the Right inner differential case.
Measure the depth between the two surfaces that I've marked X.
In this example the depth = aproximately 3.60mm

Step 3:- Subtract 3.60mm from 4.60mm which is aproximately 1.00mm ( 0.039" )

This 1.00mm ( 0.039") in theory is the gap distance between the step on the Right inner differential case
and the groove in the Left inner differential case before the step and groove bottom out.

The gap which is what I call the allowable crush on the LSD clutch pack archived by machining.

So in theory we could just machine 1.00mm (0.039") straight out off the Left inner differential case.
But in this example I would only machine .50mm ( 0.020" ) off the cone surface,
I don't want to over tighten the whole LSD clutch pack,because I still want to retain the way the Mazda LSD works.
Which is that it only engages under load (Power),one reason why the LSD unit last so long.

The cone surface I've marked with a black pen and the white arrows are the *ONLY* area I machine.

I hope this save you a few dollars.

Cheers the old boy.

*Update*
 

Here's one I machined.
0.50mm ( 0.020" ) turned off the surface marked with white arrows.
Thus giving more crush on the LSD clutch pack.
I find this a cheaper solution to freshen up the LSD gear case,
rather than buy all new thrust washers,friction plates,and friction discs ( if still within there wear tolerances ).

Enjoy !

The old boy

*Update Pics*
 

Just a few pics :icon_tup:


http://img88.imageshack.us/img88/9292/rimg0228ay3.jpg

http://img91.imageshack.us/img91/324/rimg0227vx3.jpg

http://img92.imageshack.us/img92/9234/rimg0204qs6.jpg

http://img98.imageshack.us/img98/1358/rimg0207xs6.jpg

http://img92.imageshack.us/img92/7152/rimg0210aa2.jpg

http://img152.imageshack.us/img152/1742/rimg0202ii3.jpg

http://img86.imageshack.us/img86/1514/rimg0225zp0.jpg

http://img134.imageshack.us/img134/6233/rimg0200ya3.jpg


:sleep:

Very nice,looks clean and tidy.

Looks pretty clean,were any of the discs actually well below spec?

:-)
 

Thanks steve84GS TII :icon_tup:

Yes plenty of degreaser and elbow grease,finishing off with the wire wheel (*comes up a treat !*)

No, I was quite surprised with the wear factor in this LSD gear case.
The mileage on the unit was approximately 100,000+Miles,
Still all plates,etc were still with in all there limits.
The diff oil on the LSD parts before cleaning was very clean ! ( A lot to be said for regular diff oil changes ).
I've had the odd gear case,that you can tell straight away it's never had regular oil changes,
By the black oily sludge - (* feels more like honing paste in between your fingers *) on the LSD parts,etc.
These non serviced units will always have high wear on plates,gears,bearings,etc,
Regular oil changes,flush away the impurities trapped in between the diff parts by normal gear wear.


*And for the community who need the names & sizes of wear limits on the LSD gear case parts see below*

Thanks todate to all for there email's todate !.

Cheers the OLD FART :)

http://img137.imageshack.us/img137/4...rtnamesui8.jpg

http://img228.imageshack.us/img228/3...ersizesxc2.jpg

:sleep:

[I've had the odd gear case,that you can tell straight away it's never had regular oil changes,
By the black oily sludge - (* feels more like honing paste in between your fingers *) on the LSD parts,etc.
These non serviced units will always have high wear on plates,gears,bearings,etc,
Regular oil changes,flush away the impurities trapped in between the diff parts by normal gear wear.


So true.
Same goes for motorcycles.Anytime you have a wet friction surface your gonna have excess debris in the oil,which will of course find its way into everything else.A magnetic drain plug is great for gear/bearing chips,but it does nothing to trap the fiberous crud from the clutches....gotta give those LSD diffs the regular attention they deserve.