Knocking 340

If it is a heavy, low pitched knock, then likely a rod bearing, possibly a piston pin. If a high pitched knock, then likely a lifter. Both fixable.... just takes 'Pounds'. (No more Euro's for you guys, right?!)

>040" overbore may not safely allow any more overboring. Might.. might not. You can't know until it is torn down and the cylinder walls sonic checked.