Questionable Turn Fold (Sexy)

Is raising here crazy, (obviously folding to a reraise)? If he has a made flush a bit more than half the time, would't it be worth it? How often do you think he has a made flush?

The purpose of a raise is obviously to make overcards without the A og K of clubs fold, to increase the chance to make it through the river when we are ahead on the turn. Sometimes (but very rarely) we might even take the pot down if he is betting a lone Q[img]/images/graemlins/club.gif[/img] or J[img]/images/graemlins/club.gif[/img].

I would have a hard time folding here, but that might not mean its a bad idea. If I knew the player to be passive and not tricky, I would fold though.