Just changed my mind about using junkyard axles after seeing one crack

I was all set to grab a rear axle from a pick-n-pull for my '88 F-150 rebuild until I watched a guy at the yard yank one out and it had a hairline fracture running three inches down the tube. Found a video on a homesteader page that showed how stress cycles cause hidden cracks in old salvage axles, and now I'm wondering if I should save up for a reman unit instead. Anyone here gone with a junkyard axle long term without issues?

2 comments

2 Comments

laura_ross18d ago

There's that old saying about how you never really know what's hiding inside someone else's parts. Buddy of mine ran a junkyard Dana 44 for six years on his mud truck with zero problems, but he also spent three hours cleaning and inspecting the thing before installation. Sometimes you get lucky, sometimes you get a paperweight with a crack you can't see until it snaps on the highway.

perez.barbara17d ago

Honestly, if you're going junkyard route you gotta treat every axle like it's already broke until you prove otherwise. I've pulled half a dozen axles from yards myself and I always run a dial indicator down the tube and check for ovaling at the bearing journals, plus hit the whole thing with a cheap dye penetrant kit from the parts store. That stress crack you saw probably started from a previous hard impact or just years of fatigue, and most guys skip the inspection step because they want a quick swap. If you have the time and space to really inspect and clean one up, junkyard can work, but I'd still budget for at least new bearings and seals before you even put it in.