93_Clubman wrote:GM, as you probably know removing the oil filler plug & looking inside allows you to identify whether Torsen or open diff.
Solo Miata reckons you have to disassemble diff to identify whether Torsen Type I or Torsen Type II: http://fixjunk.com/solomiata/solomiata/MiataVLSD.html
'(Q) How do I tell a Type I from a Type II Torsen?
(A) You have to disassemble the housing to view the actual Torsen LSD unit. The easy way to tell is the worm gears on the Type I are perpendicular to the axle shaft (crossed axis helical) and the worm gears on the Type II are parallel (parallel axis helical). The picture above is a Type I. '
But I reckon due to the manufacturing differences between the Type I & Type II you could identify which type by removing the oil filler plug & looking inside, but could be wrong:
'The 1994 and 1995 Miata have a Type I Torsen, which is the traditional worm gear unit. '
'The 1996 and 1997 Torsen is a Type II. This unit has a different design with the worm gears being replaced by three sets of drive gears that are mounted with their axes parallel to the ring gear axis. ':
https://www.miata.net/garage/diffguide/index.html
Some other resources:
https://www.miata.net/garage/vlsd.html
https://www.beavismotorsport.com/guides ... miata-mx5/
and ...
93_Clubman wrote:Pics of T1 & T2 in following should allow identification of which type via oil filler plug hole: https://forum.miata.net/vb/showthread.php?t=449338
Thanks again Clubman!!
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