4 bolt main
neither the GSR or type-r bottom end come with 4 bolt mains..
maybe certain honda V6 engines do but as far as i know none of their 4 cylinders have 4 bolt mains.....but i could be wrong
maybe certain honda V6 engines do but as far as i know none of their 4 cylinders have 4 bolt mains.....but i could be wrong




