As the topic says, I've got to re do some 03' WRX head gaskets and want to clean the heads up as best as I can before they visit the machine shop. I've looked around quite a bit on the internet. "Subaru Mike" seems to use super clean de-greaser and a power washer to cleaning heads. Is this safe, logical, ill-advised, etc? Cams and buckets will be out of course.
Please chime in thanks.