Warbird Information Exchange

The only ones that can zero time a engine is the manfacturer, as in a log book entry that says ETTSN:0000.0.

A rebuilder can zero time since major, as in ETTSN: 2,050 HRS ETTSMOH: 0000.0

ETTSN: = ENGINE TOTAL TIME SINCE NEW

ETTSMOH:= ENGINE TOTAL TIME SINCE MAJOR OVERHAUL

I believe zero timing is rebuilding to new specs. as opposed to servicable specs. Zero timing is also known as remanufacturing verses overhauling.

there is no such term as "remanufactured". This is beaten into your head at every seminar you attended that pertaines to this stuf (a part is only manufactured once).

I think that remanufacturing is a term created by the manufacturers to denote a factory overhaul.

"Remanufactured" is an automotive term that may or may not be applicable here.
Take say, an alternator; the cheaper 'rebuilt' one will have only the actual failed part replaced. "Reman' unit will have all the guts replaced with newly made components reusing only the cast housing.
It sounds like in aviation, the word 'rebuilt' is being used in the context of 'reman' from auto. We don't want the lower priced one-year warranty stuff around airplanes.

Canso42-with 8 years in car parts.