I read in the Bentley manual that these heads should never be skimmed, probably because in doing so you will raise what is an already high compression ratio. So what I’d really like to know is if people are having their heads skimmed when they voluntarily lift them to do the head gasket?
On the instances I’ve had heads off previous engines they have been warped due to overheating and have always required a skim. If you have seen no ill effects and are just lifting the head to pop a new gasket in then I wonder does this still need doing?
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