Need a little help...PLEASE!!

[sasmar929]

okay, so almost a year ago, i had my motor rebuilt. and just a few weeks ago my headgasket blew. i know my overbore size was .5 or .05 something like that, whatever the motor rebuild size stuff is... i cant remember offhand, so this is where im stuck. what size headgasket do i need? a 90mm, or 91mm. i have no clue, and need to order parts ASAP. any help would be awesome to have right about now! thanks

[army240]

Your HG size should be 0.5 or 1 mm bigger than your bore.

[sasmar929]

just looked it up a little better... so .5mm = .020 inches. so thats how far over bored the motor is. um, i found a cosworth 90.5mm headgasket. think thats a little to far overbore size to seal correctly? i dont want to use cometic, ive heard bad things and want someting stronger than stock