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Checkout the bolt ridge impressions on the original diff, telling about how much torque was used! I haven't been able to locate our exact torque specs for the ring bolts but also i don't think I'd be able to implement without a proper vice setup. That said I am going to red loctite as a safety precaution, did some research on the various red loctite options and ended up getting loctite 263. I believe the temp spec on it is ~360F (though the packaging says 300) and my research tells me diff fluid on track maxes out around 260-280. Also though, these bolts are constantly exposed to diff fluid and temp cycling so I do wonder if the loctite can even withstand that, figure why not though. Loctite 263 does also indicate some oil resistant properties. One other note, if you red loctite (and it's actually effective) and you go to swap the ring/pinion later it's likely you'd have to apply some heat to each bolt to get it loose. Maybe I should have done this for the factory bolts as well, easy enough with a butane torch, assuming the leftover oil doesn't ignite*!
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2020 M2 Competition | 3.0L | DCT
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