My background is with honda motors and being that they are cast aluminum, if u shoved some arp mains in them, your gonna distort the mains. But, for the 4g63 Ive asked a couple different people if you will need to align hone or not and I got mixed answers. So just wanted to if anyone know from experiece.

 

I thought I might need to but ended up not having too.

-Josh

 

If it is out of tolerance I would definatly line hone for most if not all Racing type engine builders it is automatic.When I had the 2.2 turbo for Daytona rebuilt I had them line hone it with ARP main studs