The amount of time spent working on a mechanical project either repairing or assembling from the ground up. In most cases, it refers to a project in the automotive industry.
"I didn't put in 100+ hours of wrench time on my ride just so I could lose it on a TV show as gay as Pinks."
by forkweaver June 05, 2006
1 more definition
building a street race car, like in "The Fast and The Furious"
wow nice car!!! who put in the wrench time???
by blthrskt March 19, 2006