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Identify/differences between 3-bolt and 4-bolt


JNR
5 star (English Professor) member Has extensive pop up picture book collection
20/1000


Galant VR-4 org Post #: 110095 posted 06/13/04 12:08 PM     Remind Me!  Send Private Message   Edit Post      
I was wondering how easy it was to identify what rear diff is installed in the vehicle? I am not sure if mine is the stocker, or if he changed it to a LSD or a 4-bolt, etc...the 4ws is still intact, but that doesn't necessarily mean anything, I suppose...

I see a 3 digit code on the diff and will get that info a little later (can't recall right now) and wonder if that means anything, to identify...

So, what exactly does 3-bolt or 4-bolt refer to, anyway? The physical mounting, or something internal...

I did a quick search, but was hard to narrow down these questions...Thanks!

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MMorgan
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Galant VR-4 org Post #: 110096 posted 06/13/04 12:19 PM     Remind Me!  Send Private Message   Edit Post      
 -


 -

you can tell by looking at the axle cups which is a 4 bolt(it has 4 bolts) or a 3 bolt(it has 3 bolts)

There is a VFAQ written on the swap that could tell you some info:

http://www.vfaq.com/mods/4bolt.html

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GeeRIDE
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Galant VR-4 org Post #: 110097 posted 06/13/04 12:28 PM     Remind Me!  Send Private Message   Edit Post      
I just put in '4bolt' as the search keyword and came up with 112 results, I find it very hard to believe you cant find your answer in any of those very informative posts.

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sleepyvr4
I Hate Kitty Cats


Galant VR-4 org Post #: 110098 posted 06/13/04 01:40 PM     Remind Me!  Send Private Message   Edit Post      
the 4-bolt lsd diff will have a sticker on it that says "lsd viscous" and some numbers. I didn't see it on mine until I pressure washed it, as they can get pretty crusty.

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JNR
5 star (English Professor) member Has extensive pop up picture book collection
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Galant VR-4 org Post #: 110099 posted 06/13/04 02:10 PM     Remind Me!  Send Private Message   Edit Post      
I did do a search, but I was looking more for what the codes mean and possibly if someone had a pic of the different ones...I suppose they may have been within one of the many results, but the titles do not make it seem so...Even so, it helps others to bring up a previously discussed topic if it's old, as they may not have thought about looking for such info...throwing around "3-bolt" and 4-bolt" is neat for those who are aware, but I like to know what certain terms mean, if I'm gonna talk about something...

Thanks for the info, guys...it's obvious how and why the 4-bolt is stronger (beside the number of bolts) and desirable and now I can visualize it...

I mainly want to see if mine was the unit that came with the vehicle and if not, what it was...the previous owner is kind of a flake, so I am on my own and with the help of the forum [Smile]

I looked and I have the 3-bolt and code 'B2B'...so, chances are this is the stock unit...

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MMorgan
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Galant VR-4 org Post #: 110100 posted 06/13/04 02:22 PM     Remind Me!  Send Private Message   Edit Post      
I read somewhere that if it is LSD, there will be a warning label on it. I think there should also be a ratio # somewhere on the differential case. I'm not sure but I think it is supposed to say 3.55 if it is a 4 bolt. Might want to double check, thats from my memory which is weak.

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GeeRIDE
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Galant VR-4 org Post #: 110101 posted 06/13/04 02:52 PM     Remind Me!  Send Private Message   Edit Post      
3.545 on the 4bolt sticker [Wink]

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MMorgan
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Galant VR-4 org Post #: 110102 posted 06/13/04 02:53 PM     Remind Me!  Send Private Message   Edit Post      
i rounded up

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GeeRIDE
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Galant VR-4 org Post #: 110103 posted 06/13/04 04:06 PM     Remind Me!  Send Private Message   Edit Post      
Wouldnt it just be 4 if you rounded up [Wink]

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MMorgan
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Galant VR-4 org Post #: 110104 posted 06/13/04 04:45 PM     Remind Me!  Send Private Message   Edit Post      
sorry, i meant i rounded up to the nearest hundreth

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boostx
On The Wrong Side.
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Galant VR-4 org Post #: 110105 posted 07/20/04 10:37 PM     Remind Me!  Send Private Message   Edit Post      
quote:
Originally posted by sleepyvr4:
the 4-bolt lsd diff will have a sticker on it that says "lsd viscous" and some numbers. I didn't see it on mine until I pressure washed it, as they can get pretty crusty.

where was the sticker on the rear

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cheekychimp Galant VR4.org Moderator
Director of Housing and Urban Development, and carbon/kevlar balls


Galant VR-4 org Post #: 110106 posted 07/21/04 04:48 AM     Remind Me!  Send Private Message   Edit Post      
OK,
Here is a question for the experts

I intend to do a four bolt swap, but whilst I am at it I've decided to do some rebuilding. I see the driveshaftshop (.com) do high performance axles. Now if I buy two new axles and put a Kaaz LSD in my rear diff case, apart from the 4 bolt axle cups, is there going to be anything else I need?

RRE mentions the need to buy two new joints in order to bolt up the Kaaz diff but I can't figure out where these go.

Paul.

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mj_rosenfeld
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Galant VR-4 org Post #: 110107 posted 07/21/04 05:02 AM     Remind Me!  Send Private Message   Edit Post      
They are the inner pair of axle joints. You cannot use stock DSM ones with the Kaaz.
Mike R.

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cheekychimp Galant VR4.org Moderator
Director of Housing and Urban Development, and carbon/kevlar balls


Galant VR-4 org Post #: 110108 posted 07/21/04 07:45 AM     Remind Me!  Send Private Message   Edit Post      
Mike,
Since you have done this, would you mind casting your mind back and see if you can remember the following :-

If I buy :-

Kaaz Rear Diff
Two new high performance axles
Those two (massively expensive) inner joints

Apart from the 4 bolt axle cups, is there anything else I would be missing?

Paul.

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Mr_HYDE
Unregistered


Galant VR-4 org Post #: 110109 posted 07/21/04 05:23 PM     Remind Me!  Send Private Message   Edit Post   
quote:
Originally posted by JNR Design:
I did do a search,

Next time go to the age old rememdy for any question you might have for a DSM.....


www.vfaq.com


The drivetrain section has everything you need to know.


http://www.vfaq.com/mods/4bolt.html

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