Over pressurization can be caused by:
1. Air locks in the cooling system (run it with the cap off until it burps itself)
2. blown head gasket (look for constant bubbles in the metal header tank)

How hot did it get this morning?

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]