I have a particularly gunked up old hgih comp 4AGZE in my garage, so far I have stolen shims and head bolts and other stuff off it for my AW11SC, but I plan to rebuilt it.
What is a good method to clean the caked on crud / burn't oil and god knows what else off from under the cam covers?
Is there some kind of chemical dip that can be used for an alloy cylinder head? I have a feeling that this job is too extreme for spray on de-greaser!