[85SilverWedge]

I have used the search feature and didn't seem to find anything fitting this, AND I don't have any exp working on diffs.
My issue is what I would call excessive play. I've got the w58 4.30 pkg. She will smoke both tires for as long as I ask her to. I can grab the D/S and get approx 1/8 turn before she catches. I know this is too much play. I have heard the term "shims" associated with rear ends b4, don't know if they apply to us etc, but just want to know IF this is adjustable/repairable or if the problem only gets solved with a rebuild? All input appreciated.

 

[Daves2JZGTE]

do you have the clunking diff if so yes shimming will fix this

 

[85SilverWedge]

Dave,
It doesn't have an overwhelming clunk but I think it does have a noticable one, especially when switching from fwd to reverse or vice-versa. Any ideas where I can read up on this or get info? Thanks.

 

[Daves2JZGTE]

you said that when you spin the drive shaft you get about 1/8th tern play in the dif right if thats so then your diff needs to be ree shimmed. their are 3 shims to play with. the left and right sides ie axl sides and the drive shaft to play with. when i did my diff i just had to play with tthe side shimms. look at a toyota manual it will show you what i meeeeeeeen
Dave

 

[85SilverWedge]

great, thanks. I'll look for that TSRM online and dig till I find it.

 

[Daves2JZGTE]

you will see a ez way to check what shimms need to be moved in the trms use wight grees insted of paint and just take of the diff cover if its the drive shaft shimm you mite as well save your money and do a true trax upgrade witha rebild but if its the side ones then thats ez you dont even have to pull the diff out.
Dave

 

[Daves2JZGTE]

http://www.cygnusx1.net/supra/library/TSRM_MKII/ra/RA_033.html this is the page that will help you or
http://www.cygnusx1.net/supra/techtips.html
go hear to look at the hoal tsrm its a 86 i beleve but it will work.
Dave

 

[85SilverWedge]

Dave, you rock. Thanks. :hail:

 

[Black Dawg]

1/8" is fine......don't worry about it unless it starts making bad noises.

 

[Daves2JZGTE]

you can do better if you wont. mine has littel to no play but yea if you dont hear a clunck then dont wory about it

 

[v8_ma61]

Mines making a good heart-pounding clunk when taking off from a stand-still..could this be the clutch packs or...
Its an f313 Lsd 3.9:1 ratio.

 

[Daves2JZGTE]

when you car is off get under it with it in notral grab the drive shaft and tern it from side to side and lissen the the diff to see if you have play it will be like a clunck clunck as you so from side to side.

 

[v8_ma61]

Thats exactly what happens! My car is in pieces atm, whilst it gets its new engine. So being the problem that i described, is it the clutch packs? Or does the ring and pinion need adjusting/ fixing? Everything on the ring looks fine...

 

[Daves2JZGTE]

its the ring to pinyon spacing the diff needs to be reeeee shimmed thats all well thats what the sound is.

 

[SkoonMA67]

yes... and

you will be able to get most of the clunk out of the diff, but if its that bad to begin with, you've more than likly polished the gears off pretty bad too (kinda like my car =)

Its not a terrible problem, but polished gear teeth are a sure sign that its on its way out.

When you're adjusting the diff, if you take the pinion out make sure to use a new crush sleave. Also, make sure you put the backlash and preload adjustments into spec. this is VERY important.

If you just set the diff up so that is doesnt clunk, and dont take into consideration the backlash and preload adjustments, you will go 5 blocks before the gears are toasted. Trust me, Ive done it on a truck before =) lol.

Follow the TSRM to the letter and you'll be fine =)

Aaron