If villain is pretty straightforward, you have to ask yourself "why didn't that king slow him down?".

If you put him on a Jx hand like AJ,KJ,QJ,JT -- AJ and QJ are probably going to be scared of that king. More aggressive players may raise their straight draw here with a hand like QJ, but passive or weak players probably won't.

I don't mind stacking off here vs more aggressive opponents, but players who are generally more passive postflop I'm pitching these aces here when c/r'd on the turn.

The old motto "turn raises usually mean something big" exists for good reason. One pair hands often can't stand up to turn raises without decent reads.