I have a gsr transmission with a kaaz lsd (it requires gl-5 80w-90 gearoil, factory is equivalent to 10x-30) put well over 4000 miles on the car last year with no issues as far as grinding many 1/4 mile passes. Over winter i rebuilt the engine bored it to 2 liter so im in the break in period right now. Since i am gonna take it easy for the first 1000 miles i put in brad penn gear oil with friction additive to save on cost because the kaaz gear oil requires being changed every 4000 miles. Well i am now on the stage where i can rev the car to 4500rpm and i get a "grind" when i shift quickly shift slowly it dont do it. My question is has anyone experienced problems with running the thicker gear oil required for the kaaz or if i would just drain the gear oil in it now and put the kaaz would it fix it seeing who has any similar experiences like this......
o-yeah i also drained 1 quart of gear oil out put gm synchro mesh in still didnt do anything....

any help would be appreciated


Modified by VTEC-dood at 9:18 AM 4/1/2005


Modified by VTEC-dood at 9:18 AM 4/1/2005

 

you link links to a forum.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by underpressure02 &raquo;</TD></TR><TR><TD CLASS="quote">you link links to a forum. </TD></TR></TABLE>

it also expalins the problem hes haveing a little better. thats probably why the links there.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VTEC-dood &raquo;</TD></TR><TR><TD CLASS="quote">I have a gsr transmission with a kaaz lsd (it requires gl-5 80w-90 gearoil, factory is equivalent to 10x-30) put well over 4000 miles on the car last year with no issues as far as grinding many 1/4 mile passes. Over winter i rebuilt the engine bored it to 2 liter so im in the break in period right now. Since i am gonna take it easy for the first 1000 miles i put in brad penn gear oil with friction additive to save on cost because the kaaz gear oil requires being changed every 4000 miles. Well i am now on the stage where i can rev the car to 4500rpm and i get a "grind" when i shift quickly shift slowly it dont do it. My question is has anyone experienced problems with running the thicker gear oil required for the kaaz or if i would just drain the gear oil in it now and put the kaaz would it fix it seeing who has any similar experiences like this......

o-yeah i also drained 1 quart of gear oil out put gm synchro mesh in still didnt do anything....

any help would be appreciated</TD></TR></TABLE>

 

I have never heard of changing gear oil every 4k....that is weird.

 

thanks for helping with the issue at hand

 

change the syncros and use Honda MTF

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 86si &raquo;</TD></TR><TR><TD CLASS="quote">change the syncros and use Honda MTF</TD></TR></TABLE>

thats the exact thing i would do. ive never used anything but honda mtf and it has never given me any problems. the grinding that you hear can only be caused by the syncros being worn out.......

 

The kaaz differential requires a gear oil GL-5 80w-90 with a friction additive so honda manual transmission fluid can not be used with this lsd because it has clutch plates that require this type of fluid........

Pretty much looking for someone who is currently using this lsd if anyone knows of someone using this lsd please have them post....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VTEC-dood &raquo;</TD></TR><TR><TD CLASS="quote">The kaaz differential requires a gear oil GL-5 80w-90</TD></TR></TABLE>
dude thats way too thick for a Honda trans.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 86si &raquo;</TD></TR><TR><TD CLASS="quote">
dude thats way too thick for a Honda trans. </TD></TR></TABLE>

true dave but it is required for a kazz diff, that or thier own fluid. bad stuff will happen if you use anything else!
-Roger

 

try a syntheitc 75w90 with a friction modifier....like valvoline has....if the syncros are worn there gona gring with a thicker fluid , some import trans have copper synros and the heavier fluid and the addatives cause them to degredate and bend..

or try redline gl4/gl5 application with the shock fluid..also good stuff....u may well have a syncro going out or the fluid being alot thicker than the origional application may cause it to get worse...in the end u may have to change out the syncros to a better material...

just my .02.........i do work for valvoline and may know a few things...
also i found this...


Recommended fluids:

GL5
75w90 Synthetic gear oil with limited slip additive (friction modifier)
Castrol XJ 75w90
Kaaz differential oil (for use with Kaaz LSDs,)

Break in/Servicing differential:

Upon differential installation, and fluid top off, proceed to drive vehicle to a controlled area where several circles/figure eights can be performed. Drive vehicle (at idle speed) in 20 figure eights, full lock to full lock. Then drive (at idle speed) in 20 full lock circles left, 20 full lock circles right.

All Diffsonline differentials (excluding Kaaz LSDs) require a 1200 mile break in period. Do not exceed speeds of 85mph as bearings may overheat. Drive vehicle moderately without extreme load differences such as shocking (hard shifting with swift clutch use). After 1200 miles, change oil in differential with recommended fluids. Normal BMW recommended service intervals can be followed after break in. On 3 plate+ LSDs, change oil twice the BMW recommended interval.

For vehicles used for racing applications one day of track use is recommended break in. Follow normal circle/figure eight LSD break in initially before tracking vehicle. During break in period, drive vehicle moderately without extreme load differences such as shocking (hard shifting with swift clutch use). Maximum track speed should not be achieved during break in process. After one day of track use, change oil in differential using recommended fluids.

Kaaz limited slip units require stringent break in procedures that are provided separately when this unit is used. Non compliance of provided instructions most definitely will cause driveability issues. Service intervals are also listed with provided instructions.

Normal operations:

Durring initial LSD break in (figure eights/circles), it is normal for the rear end to chatter (tire scrub/LSD noise) depending on the vehicles limited slip choice.

It is normal for some fresh rebuilt differentials to have “tight spots” rough turning before break in. Differentials are shipped/assembled dry. These mistaken imperfections remedy upon fluid fill and break in process.

High lock up (60%+) static LSDs have difficulties unlocking depending on driving surfaces (rain/snow/gravel/etc)

Ramped differentials may experience noise from acceleration/deceleration as ramped pieces move dependant of differential load (including Kaaz units).

Variable lock up differentials may influence handling dynamics of vehicle upon change in lockup based on differential load.

Differential mounting torques:

E36 (Front bolt p/n 33 17 6 750 780 blue locktight suggested)
Front 95nm
Rear 77nm

E30/E23/E32/E36 TI/E36 Z3
110nm (subframe)
77nm (through rubber mount)

E46 M3
Front 200nm
Rear 20nm, 90 degrees

E46
Front 95nm
Rear 174nm

*Other tightening torques can be provided based on application*

james

 

Thanks a lot for the info that helps a lot. Since this post i found another post about the Gm synchrmesh i bought the wrong syncromesg here there is another gm synchromesh with a friction modifier i got the one that didnt hav ethe friction modifier so since this post i put 2.5 quarts of the synchromesh w/friction modifier and so far it has "cured" the grind like I said I had no issue what so ever with this tranny at all last year pull it outta the garage after rebuild (went to 2.0 from 1.8) and out of the blue it grinds "slightly" not bad but im **** about stuff and cant figure out what happened from it just sitting. The gm synchromesh is a synthetic gl4 75w, im just worried now what will happen to the kaaz lsd with not using their gear oil<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by E-Town4229 &raquo;</TD></TR><TR><TD CLASS="quote">

true dave but it is required for a kazz diff, that or thier own fluid. bad stuff will happen if you use anything else!
-Roger</TD></TR></TABLE>

do you have experience with this diff and what will happen if I run gear oil that is not recomended?