N14 Celect tear down.

Kit came in and it 1 piece pistons. I’m measuring counter bores, after a thorough and extensive cleaning and hand sanding. I measured 4 places per bore, with a borrowed counterbore/protrusion dial indicator.
1- .368, .369, .369, .369
2- .367, .369, .368, .367
3- .367, .368, .368, .368
4- .367, .366, .366, .367
5- .369, .367, .368, .368
6- .368, .369, .369, .368
Liner flange thickness- .352
Liner shim thickness was labeled .020 but when I measured, they were more like .017- .018. I probably need a few other thinner or thicker shims????

 

They were around .0194 - .0195ish. Maybe they were originally .020’s? My kit didn’t come with them but I got an unopened set of Interstate McBee’s from a mechanic, that were labeled .020” but didn’t come out to that when I measured them. I’ll get ahold of Cummins and see if they have some true .020 or .022’s.

 

When I get these set right, what’s typically the determining factor in using standard or oversized head gaskets?

 

I didn’t.

 

I pretty sure it’s a thicker gasket.