Quote:
Originally Posted by HoneyBadgerRy
When doing bottom end rebuilds I used to put the engine cases in the oven on warm. Rims are heat treated though, so it would likely be better to prevent them from getting to hot.
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I heat wheels all the time during powder coating, and always keep they in a safe range, which for the most part is under 400F.
When you get over 400F, the time you can spend there without altering the heat treating gets pretty short. At 375F to 380F you get about an hour before you start to get close. Most of the time the wheel spends about 15 minutes at that temp. The problems start when people "outgas" the wheels at 450F to release trapped gasses or "burn-off" the existing coating at 800F. It happens.
For bearing installation, I would think 200F would be plenty. At that temp it would take hours and hours to even get close to altering the heat treating.