Eccentric Shaft bore damage
 

I damaged my E shaft getting the pilot bearing out. I over bored the e shaft with a die grinder. I pulled the motor out and took it to my builder he said the only thing he can do is pull the motor apart and install a copper sleeve. He is also said it will be fine with out it. I need some incite on this

is it so bad that the pilot bearing isn't even snug?

why would you need to pull the engine apart to install a sleeve on the pilot bearing hole? You cannot have possibly grinded so much the new bearing won't be a tight fit anymore, that would require you pretty much oversizing the entre hole (that is unless you drilled it out with a giant bit).

pilot bearing isnt snug and wont go in straight, if i try to tap it in i mess the bearing up

at stock power levels it's not do or die. it'll put more wear on your trans main bearing. i'm still trying to think why you would take a grinder to you e-shaft?

get a new shaft w/ good bearing

so it isn't snug yet you would need to tap it in will a hammer? sounds snug to me.
how do you think factory puts them in? hard words.

then they use this
http://www.mazdatrix.com/pictures/to...stallToolB.JPG
and hit it with a hammer,

i use just a hammer to get it started then use a socket to sink it in far enough too install the seal.