[turbobrat930]

Originally Posted by Oh Haha

You can use a high temp paint but I wouldn't paint them anything but a light color. Dark colors can keep the heat in the plenums which will reduce the effectiveness of the fuel mixture.

I am going to have to disagree with you on this one. If we were talking about which car kept cooler on a hot sunny day (black or white), then I think you would be on the right track. However, it is not so in this case.

First off, the intake and runners are NOT in the sunlight. Second of all, the intake does not aid in cooling as it sees no airflow(over the outside of the intake). If it did, Porsche and almost every other car manufacture in the world would have fins on the intake to aid in cooling, as well as routing air to the cool the intake. This is not so.

If one wanted to get the most benefit from trying to keep the intake as cool as possible, there are several ways to accomplish this.

One, get the intake ceramic coated as that will insulate the airflow inside the intake from radiant heat.
Two, use reflective film (such as the gold reflective film used on racecars) to shield the intake from radiant heat.
Paint, regardless of color wil not effect the heat soak of the intake.

Now if we were talking about someone painting or powdercoating their cylinders or cylinder heads, this would be a different story. Those parts are made to shed heat.