LSD questions
Thread Starter
I'm just a Hack!
Joined: Jul 2004
Posts: 142
Likes: 0
From: Columbus, Ohio
LSD questions
Little help please...
I'm trying to establish a project plan for building a "Beefy NA", & figure the drive line is as good place to start as any. My base model 87 does NOT have an LSD. It still has 4 bolt hubs.
My question is, will I be able to find an LSD to fit my differential housing? I'm thinking it would be easier to slap in a rear end from a GTU or TII or something, IF I can find one. Two birds, one stone.
BUT, I'm just checking...
I'm trying to establish a project plan for building a "Beefy NA", & figure the drive line is as good place to start as any. My base model 87 does NOT have an LSD. It still has 4 bolt hubs.
My question is, will I be able to find an LSD to fit my differential housing? I'm thinking it would be easier to slap in a rear end from a GTU or TII or something, IF I can find one. Two birds, one stone.
BUT, I'm just checking...
Full Member
Joined: Mar 2005
Posts: 112
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From: chicago
Search button helps alot, but i guess i can help.
What can be done is swapping out the whole diff with an LSD diff from a gtu or gxl.
I have an n/a s4 base with the 4-lug non LSD rear end and just finished doing the swap last week. The axle shafts fit, so it's not hard.
You cannot put the TII rear end in there because the axle shafts are longer.
If you need more help, just pm me.
What can be done is swapping out the whole diff with an LSD diff from a gtu or gxl.
I have an n/a s4 base with the 4-lug non LSD rear end and just finished doing the swap last week. The axle shafts fit, so it's not hard.
You cannot put the TII rear end in there because the axle shafts are longer.
If you need more help, just pm me.
Originally Posted by eboyz98
You cannot put the TII rear end in there because the axle shafts are longer.
If you don't want to go with the TII stuff, I've got a S4 GXL LSD and CV halfshafts if you're interested.
Last edited by dwb87; Apr 16, 2007 at 08:29 PM.
Thread Starter
I'm just a Hack!
Joined: Jul 2004
Posts: 142
Likes: 0
From: Columbus, Ohio
Thx for input...
It's quite funny, I'm VERY familiar w/ message board etiquette & use search faciility... I've literally been trying to dupe the search function into an answer for 5 hours now. For my career, I'm a software engineer... so I get it. But out of any message board I've ever been to, this one far & away is the most abusive in regards to using the search function... Its just funny...
Anyway, thx for the knowledge.
It's quite funny, I'm VERY familiar w/ message board etiquette & use search faciility... I've literally been trying to dupe the search function into an answer for 5 hours now. For my career, I'm a software engineer... so I get it. But out of any message board I've ever been to, this one far & away is the most abusive in regards to using the search function... Its just funny...
Anyway, thx for the knowledge.
Lives on the Forum
Joined: Sep 2003
Posts: 5,707
Likes: 6
From: BC, Canada
The TII and NA diffs are different. The NA uses a 7" ring gear, the TII an 8". You can get a clutch type LSD from an S4 and rebuild it and install it, or get a Miata Torsen, or go aftermarket. I'd caution against just getting a stock LSD rear end and putting it right in. It's old and worn, so it won't be very functional.
Rotary Enthusiast
Joined: Mar 2007
Posts: 1,485
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From: Pasadena
Originally Posted by Black91n/a
The TII and NA diffs are different. The NA uses a 7" ring gear, the TII an 8". You can get a clutch type LSD from an S4 and rebuild it and install it, or get a Miata Torsen, or go aftermarket. I'd caution against just getting a stock LSD rear end and putting it right in. It's old and worn, so it won't be very functional.
Lives on the Forum
Joined: Sep 2003
Posts: 5,707
Likes: 6
From: BC, Canada
As strange as this may sound, go to www.miata.net and look for threads by "Father Leadfoot" or something to that effect, he's tried a bunch of shimmings and has reported various preloads, and performances.
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