So my friend was parting out his 98 e36 m3 and i got the rack for basically nothing. I was hoping to swap it into my e30, but I've heard the m3 ones are different than the normal e36 ones? Is this true? I haven't had much experience with rack swaps so i was just checking! Thanks
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Hi review these threads. rack swap is a great improvement GL!
Posted by wh33lhop
Z3 non-M racks are all the same.
- LINEAR ratio (same rack travel per input turn across the entire rack length)
- 53.5 mm of linear rack travel per 1 360 degree rotation input.
- 144.5 mm of total rack travel (translates to 2.7 turns L2L)
- installed 13.9:1 ratio
Z3 M racks and '96+ E36 M3 racks are the same.
- PROGRESSIVE ratio (rack is slower on-center, quicker towards L&R rack locks)
- 45.5 mm of linear rack travel on-center per 1 360 degree rotation input.
- 145.6 mm of total rack travel(translates to 3.2 turns L2L)
- installed 15.6:1 mean ratio
- Same p/n rack as E36 non-M, but locks were modified to shorten gear travel from 154.7 to 145.6mm
'95 M3 racks are the slowest and shortest of all US-spec E36 racks, until 200 deg of rotation from on-center.
- PROGRESSIVE ratio
- 39.0 mm of linear rack travel on-center per 1 360 degree rotation input.
- 117mm of total rack travel (translates to 3.0 turns L2L)
- installed 17.6:1 mean ratio
And btw, regular z3 rack > z3M rack = regular e36 rack
So the regular z3 rack would be the best
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