Miata LSD into 85 GSL
#1
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Miata LSD into 85 GSL
Have searched thru the tech section and achieves looking for picture of how much of the third member needs to be grinded off into order to install Miata 4.30 LSD (99 MY) into my 85 GSL axle that I am swapping into my 85 GS. Anyone have the link and or pictures; want to see the level of work needed.
#3
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Have not tried but in reading thru achieves and asking people; they mention that in order to use stock watts linkage system the Miata third member case need to grounded down some for clearance. Was wondering if anyone had pics of work needed.
#5
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I have not done the Miata 3rd member swap, but I did look into it. The Miata piece has some bulky "bosses" on the right side where it mounts to the chassis, and this is what needs to be cut/ground off to clear the watts pivot bracket. I have seen pics on this forum of the modified Miata diff but can't find them now. The mounting bolt holes need to be completely removed, as this is exactly where the watts bracket lives.
If you do it make sure you use cutting wheels made for aluminum and some "grinding grease" made for aluminum. Aluminum is a b:tch to cut / grind. I'm trying to attach pics of the Miata part showing the boss but it doesn't seem to be working.
If you do it make sure you use cutting wheels made for aluminum and some "grinding grease" made for aluminum. Aluminum is a b:tch to cut / grind. I'm trying to attach pics of the Miata part showing the boss but it doesn't seem to be working.
Last edited by Maxwedge; 12-07-18 at 10:15 PM.
#6
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Miata Diff showing bolt holes to be removed. My apollogies - the 3rd member is iron and not aluminum (silly me!). I had to cut and smooth some cast aluminum not long ago, and had that "fun" stuck in my head. Yeah, 4" disk grinder with metal cutting wheels, and a couple hours (maybe a dremel to make it pretty) and you're good.
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racerx01 (12-10-18)
#9
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Here's another pic with the FB and Miata Diffs side by side. This is from a Very informative thread on the subject over at FB.com -
Building an RX7 LSD diff - www.RX7fb.com
Building an RX7 LSD diff - www.RX7fb.com
#11
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Here's another pic with the FB and Miata Diffs side by side. This is from a Very informative thread on the subject over at FB.com -
Building an RX7 LSD diff - www.RX7fb.com
Building an RX7 LSD diff - www.RX7fb.com
The following users liked this post:
Maxwedge (12-28-18)
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