I am looking for fics that are simillar to Pandora's Boxer in the respects that Spike helps the Scoobies before becoming chipped. Preferably unsouled Spike, but if souled the Scoobs can't know until far into the fic if at all. And if he is chipped (though I perfer that he's not), he has to help right from the getgo and not charge the money to help. Also not working for Adam. Thanks.

Time travle is alright with me as long as above criterier is met.

Don't know if this will fit but Spike is more of a helpful part of the group outside S4's initiative canon story for his return to SD and it isn't Buffy focussed...

This is the Way the World Ends by Dark Eyed Seer
Still reeling from his break up with Dru, Spike stumbles upon a witch he hopes might solve all his problems, sound familiar? But this time, Spike didn't make it all the way to California and he's just met someone with more problems then he has. This is a Spike/Tara friendship that becomes Spuffy eventually.

Offers You Can't Refuse by sweetprincipale - NC-17
Summary: Late S.3 AU. Buffy's only way to stay alive and expose a plot by a deranged Quentin Travers involves staying out of Sunnydale and staying one step ahead while Giles finds a way to save her life and get the evidence to stop the corrupt Head of the Council. But who watches the Slayer's back when she's the prey? Someone makes Spike an offer he can't refuse- but not what you'd expect.

Originally he just calls to warn Giles about Travers, and Giles bribes him to help out, but he does make decide to that original warning call all by himself and it doesn't take all that much of a bribe, IMO to get him to actually help.