Good advice, H1.
Buying a used kart, engine package, etc from a reputable dealer (locally or otherwise) can be an important step in assuring that you are getting what you think you are getting. No doubt there are some great deals out there (including listings on this site) from sell-outs, etc, but for someone brand new to the sport, it can be a big gamble without knowing exactly what you are getting.
As far as chassis being bent....Last I checked, they ALL are bent from the factory.
Seriously though, if the chassis won't scale out right, the beginner will be fighting an uphill battle and really put themselves behind in the set-up learning curve.
There is no good way to accurately check most kart chassis at a swap meet. A surface plate, jig table, or at the very least a set of scales would be the only way to get that information.
Likewise, purchasing a used engine can be a huge gamble. Is the engine fresh, needs freshened/updated, is it even legal? Again, unless the buyer knows (and trusts) the seller personally, buying a used engine is a gamble. Not many sellers will allow you to pull the head or sidecover off their engine for sale, and even then the newbie buyer isn't going to tell much.
Buying from a dealer may cost a few more dollars, but the peace of mind can be well worth it.
At the very least, taking another experienced kart racer with you to look at a potential purchase can be valuable as well.
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Thanks and God bless,
Brian Carlson
Carlson Racing Engines
Vector Cutz
www.CarlsonMotorsports.com
27 years of service to the karting industry
Linden, IN
765-339-4407
bcarlson@CarlsonMotorsports.com