260DET Posted August 21, 2015 Share Posted August 21, 2015 For a high performance Z there is only one reason to run a R180 instead of a R200 and that's weight. Quote Link to comment Share on other sites More sharing options...
G-E Posted September 9, 2015 Share Posted September 9, 2015 I agree this is definitely a heat-treat (or lack of) problem... The parts look super smooth so I doubt they even used pre-hardened material, and the lack of discolouration of the end makes me think they used "billet" as-is, but I couldn't be certain of that. Also keep in mind that overtightening the stub's retaining nut, or having CV joints with excess play (unequal distribution of torque leading to bending stress) all can exacerbate an otherwise less serious issue. Quote Link to comment Share on other sites More sharing options...
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