I am currently having the good ol OBX lsd put into my D series tranny.

As many know, with these lsd units, there is an issue w/ clearance. With the shim installed, the diff sits about a mm too high and ends up binding with the casing when the tranny is closed up. However, Honda does not make a shim small enough to make up for the difference.

I understand the shim's main purpose is to fill in any excess space, but if it is adding unneccessary length, Ive heard it can be removed and not used at all.

If the tranny is to run without any shim at all, could there be any problems? either right away, or in the long run? Im hoping for some good answers as this will probably be an issue with others trying to install the diff. into their D series tranny. thanks.

 

bump

 

no one knows an answer to this question!??!

 

with all that space wont there be unessacry play of the differntial????? shims do more than just take up space u use differnt ones for measuring the runout/adding to get run out within specs.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ba4 &raquo;</TD></TR><TR><TD CLASS="quote">with all that space wont there be unessacry play of the differntial????? shims do more than just take up space u use differnt ones for measuring the runout/adding to get run out within specs. </TD></TR></TABLE>

well the diff sits high enough that the missing shim seems as if it will not be missed. the clearance ends up being under half a mm. BTW - do you know what the exact spec for the run out is?

 

no one else has any clue what im talking about?!

 

i think if you cannot fit the smallest shim that honda makes for that application than ull be alright. makes sense right?

 

Either that or machine the shim down to where it will be able to have proper clearance. Keep us posted on how u like the unit. I too am looking into getting one of these. Quaife is too expensive for my budget build and Phantom Slip is......well yea.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 89SiPimpin &raquo;</TD></TR><TR><TD CLASS="quote">Either that or machine the shim down to where it will be able to have proper clearance. Keep us posted on how u like the unit. I too am looking into getting one of these. Quaife is too expensive for my budget build and Phantom Slip is......well yea.</TD></TR></TABLE>

but is it even worth it to have a shim thats only like .3 mm long? thats like a piece of paper....

and ill do a little review once i finally get the unit in and break in my clutch a bit

 

Im having a place put mine in this week, Id like to be able to tell them any problems and what to do with them

Mines going in an Si tranny

 

put a white paste on the ring gear then with the gears installed tun them and make sure the contact area between the pinion and ring gear is in the middle if it isnt then you will have issues down the road with premature ring and pinion wear

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by W O T &raquo;</TD></TR><TR><TD CLASS="quote">Im having a place put mine in this week, Id like to be able to tell them any problems and what to do with them

Mines going in an Si tranny</TD></TR></TABLE>

its definitely NOT just a drop in thing. Calling OBX will not get you any help also. Some advice ive gathered can is:

1. Check your diff. Make sure ALL the bolts are there except for one the looks like its missing a head. There should be NO empty holes. (i had this problem, and it took 3 weeks to receive ONE bolt from OBX)

2. Make sure these allen bolts are all torqued to a good 37 ft pds. (OBX told me 78... ended up stripping an allen bit til i got the real info - this is why i say dont call em)

3. The bearings to be used are the 40mm that come in the 88-89 si tranny.

4. With the diff in, there will almost positively be clearance issues between the diff and the housing. There are two ways to solve this from what I understand. Either have the shim milled down to work, or run without a shim. However, if you get the shim to be smaller, it would be crazy small.. im talking .1-.3 mm here. (however im still a little scared to have no shim at all)

5. have someone else do it. Im thankful i got a fellow H-T'er helping me out.

 

bump.

I just put mine in a 99-00 Si tranny.

With no shim installed there is issues, with stock 1.3mm installed it is tight, but still turns....?

No local machine shops can slim it down for me either...

It looks to be a good piece once I figure this out...

Ideas?

 

can't you just chuck it up in a lathe and take 1mm off the shoulder so that the bearing goes on farther?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jlicrx &raquo;</TD></TR><TR><TD CLASS="quote">can't you just chuck it up in a lathe and take 1mm off the shoulder so that the bearing goes on farther?

</TD></TR></TABLE>

Good point, but my bearings are already pressed on, with my final drive tq'd & loc'tited...besides that side of the bearing is near impossible to press of using a standard 3 jaw puller....