Originally Posted by bigmatt

I think it was somewhere in this thread they talked about the funny squealing sound coming from the engine at break in. I have searched and cannot find. so if any one knows please pass along. go-tec 7-port turbo using sidewinder 30%. my head temp on the first tank was around the 240ish mark no higher. I also preheated to 200 before firing and am using a os p-4 turbo plug. It idled perfect just when I gave it a little tap to clear out it made that sound.