Now deceased HP perfectionist and all around automotive performance guru, Bill Jenkins (Grumpy's Toy) dealt with this a lot when trying to tweak every once of HP out of every engine. He went so far as to paint the lite weight polished aluminum or chromed steel valve covers from the likes of Holley, Edelbrock, Moroso and the rest of them black because it dissipated heat faster than the polished or chromed jobs. In his ideal world, leave the stock factory painted valve covers on, get them far enough up from the head to be able to fix a girdle to the rocker arm studs to keep them as still as possible, and if need be because you're not good at welding, drill holes through them over each rocker arm and put a screw through them for the oil to fix to and drip down into the rocker arms as lubrication.
So when it comes to performance, is painted better than non-painted? Arguments can be made on both sides, to include protecting the metal from rust or oxidization.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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