i have a rb30 bottom end with the following mods.
arias forged pistons 40 thou over 9.0 to 1 comp ratio
spool conrods
arp rod bolts
arp main stud kit
rb26 size arp head bolts
rb26 main bearings with annual groove
reground crank grub screwed balanced etc
rb26 piston oil squirters
oil galleries grub screwed
line honed
internally deburred
basically everything you could want within reason
im just wondering if there will be any problems running around 2 bar from a gt40 or gt42 on a rb30 block that is 40 thou over any info would be great also any idea what the max amount of power this bottom end should be able to handle the head is cnc ported etc so flow isnt a problem.