Expect a lot of car parts...................actually the one at PIR is called the "Auto Swap Meet" http://portlandraceway.com/?/events/...2pajknuvim2trk
And the one at the Expo Center is just called the "Portland Swap Meet" http://www.portlandswapmeet.com/index.php
Both will have bikes, parts, tools and other stuff, but it's mostly automotive type stuff.
If you have an old muscle car, 4X4, antique, classic or are building a Rat Rod, it's the place to go.
The good deals have been harder to come by in the last 5 or so years, but I have found some really good deals on bike parts and accessories, but they are far and few in between.
I'll be hanging out at stall 2352 (on the west end of the track) with some buds Thursday, Friday and maybe Saturday. Stop on by if ya make it.