Counterbore Cutting

Personally, I would want my shims, liners, spacer plate, spacer plate gasket, hold down bolts/washers to verify protrusion if someone is cutting them or most likely you are sneaking the tool group out the back door on a Friday. Since you have it out of frame, have you considered decking it? Sure water grommet spots look pitted. Can always hole saw them and epoxy them too. It is all simple math to figure your protrusion, but I like to see it with a sled gauge. To add to the topic and debate, I prefer 0.005 over 0.006. I dislike leaky spacer plate gaskets.

 

I've cut quite a few without the parts. If you do it often enough, you can basically tell what the final protrusion will be within a thou based on all the previous ones. Using all factory parts that is.
x1 on decking it. If its outta frame already might as well start fresh.

 

Wouldnt suprise me if finning would do it. We have had them linebore and deck in the past. Local engine machine shop may do them as well.

 

if its out of the truck you'd be crazy not to get it done at a machine shop. they can cut all the damaged area of the liner flange seat and fit an interference insert. they do the same with corroded water ferrule surfaces. then the deck the block leaving a fresh surface to start with.

I personally send blocks to the machine shop without main caps fitted. some machine shops can get carried away and want to machine everything even if its not needed. then you get a bill you cant jump over.

most blocks I send get acid bath, required inserts, light deck only.