engine diplacement or an r with these mods?

[250r4life]

What would be the engine diplacement on a 250r with the following oem long rod crank,spacer plate,1986 style piston,1.50mm o/s?

[rm250dude]

wats the bore

[bushwesl]

With a 1.50 overbore, making it a 67.5mm piston/bore, and with a 72mm stroke your displacement should be 257.7 cc.

[250r4life]

thanks for the info