I am building an h23vtec (no this isnt an h23vtec question) i am workin on making a list of parts i need to order from honda (well hondaautomotiveparts.com) to rebuild the block. in the below diagram for a 94 h23. they label 18-20 as "Metal (no.1)-3"?
Are these bearings for the balance shafts?, i dont remember any bearings if so.



Any help is great, thanks a lot guys

 

yeah man those are balance shaft bearings.

prolly dont need replaced either unless there was an oil failure of some kind. theres no pressure on them like the crank and rods so they should be ok.

or if ur gettin rid of the balance shafts you can press those bearings out and put them back in upside down to plug the oil hole.

 

so thats why i didnt notice them, they are pressed in? thats got to be a delicate process to press new ones in?

 

yup.

i turned down some mandrels on a lathe to help press mine out when i flipped them. there are three different sizes i believe.