NL 50 - TPGK against maniac, to stack off or not to?

[BlueBear]

MP has $23.15 left and is a complete maniac. 83/23/7.0 in about hundred hands. He is likely to overvalue top pair hands thinking it's the nuts. I normally fold to a 3-bet here but this exceptional player made me deviate from my normal play. Comments?

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool (http://poker-tools.flopturnriver.com/Hand-Converter.php) from FlopTurnRiver.com (http://www.flopturnriver.com) (Format: 2+2 Forums)

SB ($85.95)
BB ($103)
UTG ($51)
MP ($39.15)
Hero ($48.15)
Button ($22.50)

Preflop: Hero is CO with Q/images/graemlins/diamond.gif, K/images/graemlins/heart.gif.
<font color="#666666">1 fold</font>, MP calls $0.50, <font color="#CC3333">Hero raises to $2.5</font>, <font color="#666666">3 folds</font>, MP calls $2.

Flop: ($5.75) K/images/graemlins/club.gif, T/images/graemlins/spade.gif, 4/images/graemlins/heart.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP bets $0.5</font>, <font color="#CC3333">Hero raises to $7</font>, <font color="#CC3333">MP raises to $13.5</font>, <font color="#CC3333">Hero goes all in.... </font>

[and12006]

Stack him and go with your read I love maniac's except when they suck out. :P

[SirFelixCat]

Well played. Too big of a range that you're ahead of. If he's ahead, well, rebuy and go get'em again.