there is no VCT to mess up, so rule that one out. Im going to guess your timing is wrong. I second checking it over with a timing light and making sure you tensioned the belt properly..
2001 Red ZX3 5spd
OBX 4-2-1 Race Header; Borla 2.5" SVT Catback; MAC Short Ram; FC 65mm TB; FC Race Shifter; Gear Concepts Aluminum Pedals; Painted Interior; SVT Front Bumper and grille