Not being rude, so please dont take it that way, but, if the guy that was measuring is a machinist, he should have that answer, and know how/where to measure a TRW piston I would think. Remember he clearance is in the piston, not the bore.

RIP Monte Smith

Your work is a reflection of yourself, autograph it with quality.

WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.