i prefer limping pre, but i think if you do raise it should be at least 1x more. you almost gotta think if hes calling the turn his range is {Q9, 98, QJ, AT, A9, A4, 44} and add some spades somewhere in there. And, its only like $120 to him if i do the maths correctly, so probably any made hand here he isnt folding, would be my guess.