Turn call?

[Roy6]

I have trouble here playing the turn.
No read on villain so I put him on either two pair or a straight. Can I call here the turn if I fold the river UI?

-I don't get the correct odds here to draw just to a Q or a J (8.20:1 needed), and even these outs are tainted if he has the straight.
-I might be good if the board pairs and that counterfeits his 2 pair, but that could also mean he'll have a boat.
Can I say it's more likely he has 78 here and call only if a 5 pairs?

-Can I raise if I hit some of my hands? Obviously if he just checks the river, I can bet if I have improved.
But can I raise if the river is a J/Q/5?
Also, can I fold to a 3-bet then? (I think obviously yes, if the river was a J).


Cryptologic 2.00/4.00 Hold'em <font color="#0000FF">(6 handed)</font> link

Preflop: Hero is BB with J[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/spade.gif[/img].
UTG calls, <font color="#666666">2 folds</font>, Button calls, SB completes, Hero checks.

Flop: (4.00 SB) 5[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, UTG calls, Button calls, SB calls.

Turn: (4.00 BB) 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, UTG folds, Button folds, <font color="#CC3333">SB raises</font>, Hero calls.

River: (8.00 BB) K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets</font>, Hero folds.

Final Pot: 9.00 BB.