Advice needed. A journal cap came off!

if I understand right its a main cap bearing that came off

you CANT change a main cap without having the block linebored
if you do maybe the cap will fit if you are lucky but the cranck wont turn

what you should do is: if the main arent so bad can work on it
to have it smoot again but not much

you gonna need new bearing for that main

you gonna need new bolt for that main

you will need to check all rod bolt and main bolt
to be correctly torque

if the cranck have litlle tiny scratch you can
still use it but they need to be in the same way the cranck rotate
so it wouldnt wear the bearing

but first put a dial indicator on the cranck shaft just to be
sure the cranck didnt bind in any way

my 2 cents

from a guy who doesnt have money to spend
for usefull parts